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Theoretical and numerical modeling of the effect of damage and dynamic strain aging on the plastic response of C45 steel alloys Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-03-18 Yooseob Song, Jaeheum Yeon, George Z Voyiadjis
A constitutive model for C45 steel alloys is proposed in this work by integrating the effect of damage and a specific phenomenon, so-called dynamic strain aging. For damage modeling, an energy-based isotropic damage model is implemented within a frame of continuum damage mechanics. The total stress is decomposed into athermal and thermal elements. The former includes the additional term for dynamic
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Mechanical impairment characteristics and a novel constitutive model for rocks subjected to uniaxial loading process Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-03-08 Kai Chen, Roberto Cudmani, Andres Alfonso Pena Olarte
The study of constitutive relationship and damage degradation is crucial in solving the stability challenges faced in the rock engineering. In this work, the stress-strain relationships of different type of rocks subjected to uniaxial loading processes are investigated in details. Experimental results demonstrate measurements, such as uniaxial compressive strength (UCS), tangent deformation modulus
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Damage evolution analysis of concrete based on multi-feature acoustic emission and Gaussian mixture model clustering Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-03-05 Bo Yu, Jian Liang, Jiann-Wen Woody Ju
In this work, a novel method for damage evolution analysis of concrete under uniaxial compression is proposed based on the multi-feature acoustic emission (AE) and the Gaussian mixture model (GMM) clustering. The hierarchical clustering algorithm is adopted to select optimal AE parameters, while multiple features of these parameters are generated through the principal component analysis (PCA). Then
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Dynamic constitutive model of saturated saline frozen soil under uniaxial impact loading Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-29 Bin Shang, Zhiwu Zhu, Bin Li, Fulai Zhang, Tao Li
The soil matrix, salt crystals, ice crystals, and pore solutions constitute the composite geological material of saturated saline frozen soil. The destruction mode and dynamic constitutive model of saturated saline frozen soil need to be studied because infrastructure construction is increasingly being extended to regions with saturated saline frozen soil. Based on the split Hopkinson pressure bar
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Damage analysis of axially compressed concrete-filled steel tube stub columns based on acoustic emission Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-29 Yanjun Chang, Enchao Rong, Wanli Chen, Xiaojun Ke, Kaizhong Xie
Concrete-filled steel tube (CFST) widely applied in engineering structures due to its superior behavior requires monitoring and assessment for damage level. Here, the acoustic emission (AE) technique was used to monitor the fracture process of concrete core in CFST stub columns subjected to axial compression. Test and analyzed results show that the damage process of CFST specimens can be divided into
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Experimental and numerical study on projectile impact damage of EBC-SiC/SiC Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-28 Bin Liu, Yancheng Liu, Qiyun Ao, Tengfei Yang, Rui Yan, Yongsheng Liu
The ingested particles or debris will cause high-speed & low-energy impact to the hot end components of aeroengine. Few literature focus on the projectile impact of SiC/SiC with Environmental Barrier Coating(EBC). The impact of 2 mm projectile was specially studied for Si/Yb2Si2O7/Yb2SiO5-SiC/SiC. Gas gun system was used to conduct impact testing at the speed of 3 m/s∼353m/s. The optical microscope
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Elastic moduli prediction of a short fiber composite with interface debonding at fiber ends Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-28 Hong-Bo Huang, Zheng-Ming Huang, Yong-Ping Wan
This work deals with the fiber ends debonding-induced elastic moduli degradation of a short fiber reinforced composite (SFRC). The strain fields of the matrix in a representative volume element (RVE) of the SFRC are determined from an imaginary fiber technique. By using the debonding boundary conditions, the debonded modulus of the composite is derived, which is affected by not only the far-field but
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Multiscale prediction of thermal damage for hybrid fibers reinforced cementitious composites blended with fly ash at high temperatures Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-26 Kai Cao, Ganggui Liu, Hui Li, Zhiyi Huang
Thermal damage assessment of cementitious composites is essential for evaluating post-fire health conditions of the engineering structures, as well as the basis for reinforcement and repair after fires. Fibers and fly ash are widely used in cementitious composites due to their excellent properties. However, quantifying and predicting the thermal damage of hybrid fibers reinforced cementitious composites
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Multi-stress damage and healing mechanics in quasi-brittle materials: Theoretical overview Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-26 Bilal Ahmed, Taehyo Park, Jong-Su Jeon
This work introduces a theoretical framework for continuum damage and healing mechanics by extending stress decomposition to account for tensile, compressive, and shear stresses. In addition to the spectral stress decomposition into tensile and compressive components, we extend the existing stress decomposition method to address shear stresses. The extraction of shear stresses employs two hypotheses
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A rolling contact fatigue life prediction model for bearing steel considering its gradient structure due to cyclic hardening Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-02-26 Yue Zhao, Xi Wang, Rubing Guo, Shouguang Sun
This paper presents a rolling contact fatigue life prediction model for bearing steel. In the initial stage of rolling contact, the gradient structure appears in the subsurface region of bearing steel and the hardness shows a gradient distribution along the contact depth direction due to the roller compaction effect. This indicates that the fatigue resistance of bearing steel varies in the subsurface
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A new damage-based failure criterion for nonlinear behavior of fibrous composite materials Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-05-12 GA Abu-Farsakh, IN Odeh
In the present paper, a novel combined damage-based failure criterion is being proposed for predicting failure stresses in unidirectional fibrous composite laminas or laminates having a nonlinear m...
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Effect of cutting parameters on the microstructure evolution and damage mechanism of 7075-T6 aluminum alloy in micro cutting Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-05-11 Ping Zhang, Zhenyong Lin, Zehua Liu, Junling Liu, Qingqun Mai, Xiujie Yue
This work aims to explore how cutting parameters affect the microstructure evolution and damage mechanism of 7075-T6 aluminum alloy in micro cutting. The effect of cutting parameters on micro cutti...
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Hydro-mechanical coupling behavior and statistical damage constitutive model of deep marble with disturbance Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-05-07 Zhiliang Wang, Shumin Wang, Jianguo Wang
To study the effect of excavation disturbance on hydro-mechanical coupling characteristics of deep marble, both artificially disturbed and intact marble samples were tested under different osmotic ...
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Statistical continuum damage healing mechanics (SCDHM) Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-05-04 Amir Shojaei, George Z Voyiadjis
Damage healing mechanics has been under tremendous development during the past decade in which many constitutive models for different classes of materials have been proposed in the literature. Howe...
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Effect of strong dielectric substances on the damage characteristics of rocks exposed to microwave radiation: Insight from experiments and mechanisms Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-05-03 Feng Gao, Yindong He, Xin Xiong, Keping Zhou, Chun Yang
It has been demonstrated that microwave pretreatment can weaken rocks, reduce tool wear, and improve mechanical rock breaking efficiency. The dielectric properties of rock minerals are a major fact...
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Optimization towards Walker’s equation using intrinsic damage dissipation energy Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-04-25 Haoran Li, Wenqi Li, Zhong Xiang, Yan Peng
In this work, a fatigue stress equation associated with equivalent life is proposed based on the intrinsic damage dissipation energy. This method can be treated as an optimization towards Walker’s ...
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A comprehensive experimental review of strain rate, size effect, creep and confinement in concrete: Part III Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-03-07 Bilal Ahmed, Taehyo Park, George Z Voyiadjis
A comprehensive review of destructive testing techniques to understand concrete behavior is presented in this work. The main objective of this article is to summarize the literature from the last t...
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Experimental study on the evolutionary characteristics of acoustic signals produced by granite damage under uniaxial compression Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-03-02 Guoshao Su, Xianjie Chen, Guikai Sun, Bingrui Chen, Guofu Zhao
Acoustic signals emitted during rock fracture constitute an important tool for rock damage evaluation. To investigate the evolutionary characteristics of acoustic emission (AE), microseismic (MS), ...
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A stress-state-dependent damage criterion for metals with plastic anisotropy Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-03-02 Michael Brünig, Sanjeev Koirala, Steffen Gerke
The paper discusses the effect of stress state and of loading direction on the onset and evolution of damage in anisotropic ductile metals. A series of experiments with uniaxially and biaxially loa...
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A thermodynamic damage model for 3D stress-induced mechanical characteristics and brittle–ductile transition of rock Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-03-01 Zhi Zheng, Hao Su, Guoxiong Mei, Wei Wang, Hong Liu, Qiang Zhang, Yujie Wang
Due to the existence of true three-dimensional high-geostress in deep underground engineering, rock shows different mechanical properties and brittle–ductile behaviours from conventional triaxial s...
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Numerical simulation on hydraulic fracture propagation in laminated shale based on thermo-hydro-mechanical-damage coupling model Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-03-01 Bo Zhang, Zhanqing Qu, Tiankui Guo, Ming Chen, Jiwei Wang, Yuanhang Zhang
The temperature of a deep shale reservoir may reach more than 100°C, and the effect of thermal shock on shale hydraulic fracturing has rarely not been considered in previous studies. Based on mesos...
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Experiment and meso-scale modelling on combined effects of strain rate and specimen size on uniaxial-compressive failures of concrete Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-02-28 Wenxuan Yu, Liu Jin, Xiuli Du
This paper presents experimental and meso-scale modelling studies on the combined effects of strain-rate and specimen size on uniaxial compressive failure behaviour of concrete. A series of uniaxia...
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Numerical analysis of size effect on the deformation behavior and damage evolution mechanism of segmental tunnel lining rings Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-02-16 Xiaofeng Zhao, Kaihang Han, J Woody Ju, Xiangsheng Chen, Weitao Chen, Hao Xiong
This article investigates the size effect of segmental tunnel linings on the deformation behavior and the damage evolution mechanism using the Finite Element Method (FEM). A series of models with d...
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Damage-healing analysis of microencapsulated self-healing concrete subjected to tensile loading using a 2D micromechanical model Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-01-28 Kaihang Han, J Woody Ju, Le-Yang Lv, Zhiguo Yan, Xiangsheng Chen, Yin-fu Jin
Self-healing concrete that employs microencapsulated healing agents has been proven to be an effective method for microcrack repairment in the concrete structure. However, there is a lack of effici...
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Continuum damage mechanics-based finite-volume homogenization of unidirectional elastoplastic fiber-reinforced composites Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-01-16 Wenqiong Tu, Shuaijun Wang, Qiang Chen
The Finite-Volume Direct Averaging Micromechanics (FVDAM) method has been further extended to predict nonlinear behaviors of unidirectional boron/aluminum (B/Al) composites, induced by plastic defo...
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Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-01-05 Nabi Mehri Khansari, MRM Aliha
Nowadays, foam structures have several applications in industries. Basically, discontinuities such as pores cause complications in evaluating the mechanical and fracture behavior. In other words, u...
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Mechanical properties and damage constitutive model of coal specimen with different moisture under uniaxial loading Int. J. Damage Mech. (IF 4.2) Pub Date : 2023-01-03 Qiang Xu, Qiangling Yao, Liqiang Yu, Liu Zhu, Zhaohui Chong, Yinghu Li, Xuehua Li
The moisture content has an important influence on the strength and stability of coal pillar dams in underground reservoirs. In this paper, the uniaxial compression test was performed on coal sampl...
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Impact simulations for high-performance fiber-reinforced cement composites using a coupled finite element and smoothed particle Galerkin method Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-12-19 MinJoo Lee, Hyo-Gyoung Kwak
This paper presents a projectile impact analysis of high-performance fiber-reinforced cement composite (HPFRCC) structures based on the coupling of the finite element method (FEM) and the smoothed ...
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Mechanical properties and two damage models of frozen-thawed rocks under triaxial compression Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-12-18 Wangtao Jiang, Yuanming Lai, Fan Yu, Qinguo Ma, Hongwei Li
Freeze-thaw induced damage in rock engineering is common in cold regions. However, a damage model for capturing the whole failure process of frozen-thawed rocks is still lacking. In this paper, tri...
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Energy-driven damage evolution and instability in fissure-cavity-contained granite induced by freeze-thaw and multistage increasing-amplitude cyclic (F-T-MSIAC) loads Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-12-11 Yu Wang, Jianqiang Han, Yingjie Xia, Bo Zhang
Rock damage and fracture is energy-driven, the energy conversion characteristics for the pre-flawed rock under static or fatigue loading conditions have been well widely studied. However, energy me...
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Investigation into a comprehensive forming limit curve considering multi-parameters effects for semi-cured FMLs through uniform pressure loading test Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-12-04 Meng Zhang, Hasnain Ali Mirza, Ye Chi Zhang, Muhammad Nazim Tabasum, HL Lang, Ping Zheng Zou
Recently, hydroforming has paid dividends in composite forming due to its uniform pressure distribution, which helps in reducing the delamination defects. Considering the need to develop an appropr...
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An energy-based elastoplastic damage model for concrete at high temperatures Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-11-27 Yu-Shuang Wang, Jian-Ying Wu
Although structural concrete is widely used in civil engineering, the proper modeling of its thermo-mechanical behavior remains a challenging issue for the academic and engineering communities due ...
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Study on creep characteristics and fractional creep damage constitutive model of limestone under thermal-mechanical action Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-11-13 Haopeng Jiang, Annan Jiang, Fengrui Zhang, Yunpeng Feng
To study influence of thermal-mechanical action on creep for the geothermal wellbore, Dalian limestone was taken as the research object, and triaxial creep tests were carried out on samples under d...
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A new statistical damage model for true triaxial pre-and post-peak behaviors of rock considering intermediate principal stress and initial compaction effects Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-11-02 Zhi Zheng, Hongyu Xu, Benguo He, Chengxiang Yang, Shuling Huang, Xiaohua Huang, Jiaju Zhou, Wei Wang
Deep underground engineering excavation will induce complex change in the true three-dimensional stress state of the surrounding rock, causing rock damage and then leading to a change in mechanical...
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Hydro-mechanical coupling characteristics and damage constitutive model of low-permeability granite under triaxial compression Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-11-02 Zhi Zheng, Hongyu Xu, Wei Wang, Guoxiong Mei, Zaobao Liu, Hong Zheng, Shuling Huang
To investigate the effect of hydro-mechanical coupling characteristic in low-permeability hard rocks during the excavation of groundwater-sealed energy cavern and hydraulic engineering tunnels or c...
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Combined high and low cycle fatigue life prediction model based on damage curve method considering loading interaction effect Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-10-27 Jun Hou, Xiaowei Wang, Hui Guo, Yansong Wang, Fangjie Li, Qin Shen
Through analyzing the characteristics of the Miner’s rule and the Manson-Halford (M-H) model, a nonlinear fatigue damage accumulation model is established based on the damage curve method under com...
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A one dimensional ubiquitiform damage model for quasi-brittle materials Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-10-17 Xiao Yang, Zhuo-Cheng Ou, Zhiling Bai, Zhuoping Duan, Fenglei Huang
Considering the self-similar characteristic of irregular pore network of materials during the damage evolution process, a pore ubiquitiform model (PUM) is developed to characterize the multiscale p...
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Physical model test and numerical simulation study of cumulative damage to deep tunnel surrounding rock under cyclic blasting load Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-10-17 Jiang Huang, Shi-Hai Chen, Min-Long Liu, Kun-Peng Li
Cyclic blasting excavation of a deep tunnel frequently disturbs the surrounding rock, and cumulative damage effect will occur in cases multiple blasts are applied. To study the damage evolution tre...
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Numerical simulation research on impact mechanical properties of frozen soil based on discrete element method Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-10-17 Zhanfan Chunyu, Zhiwu Zhu, Bin Li, Tao Li
Many engineering activities have been conducted on permafrost. Frozen soil is subjected to impact loading, particularly during blasting and excavation projects. Thus, it is essential to study the i...
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A micromechanical crack bridging model considering the slip-softening interface with the residual shear stress for SFRCC Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-10-10 Xiangyang Wei, Hehua Zhu, Qing Chen, J Woody Ju, Zhiguo Yan, Yi Shen
Characterizing the bond properties of the steel fiber/matrix interface plays an important role in describing the crack bridging effect in steel fiber-reinforced cementitious composites (SFRCC). In ...
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A new fractional-order model for time-dependent damage of rock under true triaxial stresses Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-09-13 Zhi Zheng, Zhiyang Cai, Guosao Su, Shuling Huang, Wei Wang, Qiang Zhang, Yujie Wang
To reasonably describe the time-dependent characteristics of rock under true triaxial stresses and analyze the long-term stability of deep underground engineering, based on the understanding of tim...
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An integrated unified elasto-viscoplastic fatigue and creep damage model with characterization method for structural analysis of nickel-based high-temperature structure Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-09-13 Hoil Choi, Hyoung Jun Lim, Gun Jin Yun
This paper proposes an integrated unified elasto-viscoplastic fatigue and creep damage model with modified hardening equations to simulate the elasto-viscoplasticity, primary-secondary and tertiary...
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Dynamic failure behavior and damage evolution process of holed sandstone under impact loads Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-09-07 Ming Tao, Huatao Zhao, Aliakbar Momeni, Wenzhuo Cao, Yan Zhao
In this research, the damage process and dynamic failure behavior of some sandstone rocks, containing an elliptical hole, were evaluated. For this reason, a series of laboratory tests under both st...
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Fracture behavior and damage evolution model of sandstone containing a single pre-existing flaw under discontinuous fatigue loading Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-09-06 Zhanming Shi, Jiangteng Li, Ju Wang, Jinci Chen
The process of disaster incubating in deep rock mass engineering is mainly related to the fracture behavior and damage mechanism of the rock mass. This paper proposes a new damage model based on Le...
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Estimation of remaining fatigue life with an energy-based model considering the effects of loading sequence and load interaction Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-09-01 Lei Gan, Hao Wu, Zheng Zhong
Accurate estimation of remaining fatigue life is crucial to assess the structural durability and reliability of engineering components. For this purpose, an energy-based model is proposed in this p...
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A gradient enhanced constitutive framework for the investigation of ductile damage localization within semicrystalline polymers Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-08-01 Soheil Satouri, George Chatzigeorgiou, Adil Benaarbia, Fodil Meraghni
The paper presents a gradient enhanced model dealing with nonlocal phenomena driven by the ductile damage in semicrystalline polymers that exhibit rate-dependent and rate-independent mechanisms. Th...
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A numerical chemo-micromechanical damage model of sulfate attack in cementitious materials Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-07-22 Shuai Zhou, Chong Wang, J Woody Ju
The sulfate attack (SA) of cementitious materials widely exists, which severely reduces the mechanical properties and durability of cementitious materials. However, few numerical SA damage models o...
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An elastoplastic damage constitutive model for hybrid steel-polypropylene fiber reinforced concrete Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-07-11 Lihua Xu, Shunan Wang, Biao Li, Le Huang, Yin Chi
An appropriate constitutive model to characterize the mechanical behavior of fiber reinforced concrete (FRC) plays a critical role in accurate prediction of structural performance. In this study, an elastoplastic damage constitutive model is developed for hybrid steel-polypropylene fiber reinforced concrete (HFRC), which can predict the versatile mechanical responses of HFRC as a result of various
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Mechanical behavior, mesoscopic properties and energy evolution of deeply buried marble during triaxial loading Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-07-13 Zhiliang Wang, Songyu Li, Jianguo Wang, Feng Xiong, Lixiang Xie
A series of triaxial compression tests were conducted on deep-buried marble to reveal its deformation and failure characteristics along with the formation mechanism under high in-situ stress. The e...
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A simple implementation of localizing gradient damage model in Abaqus Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-07-13 Yi Zhang, Yanjie Xu, Yihe Wang, Leong Hien Poh
With the localizing gradient enhancement, a damage model for quasi-brittle materials is able to achieve regularized softening responses, with localized damage profiles corresponding to the developm...
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Experimental investigation on dynamic mechanical properties and fracture evolution behavior of the underground openings with excavation damaged zones Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-07-11 Huatao Zhao, Ming Tao, Xibing Li, Zhixian Hong, Rui Zhao, Wenzhuo Cao
The existence of excavation damaged zone (EDZ) generally influences the stability and safety of the underground openings. To investigate the influence of EDZ on the stability of underground excavat...
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Study on damage evaluation indexes and evolution models of rocks under freeze-thaw considering the effect of water saturations Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-14 Shibing Huang, Chen Cai, Shilin Yu, Yingbo He, Xianze Cui
Freeze-thaw action of rocks has caused many engineering geological disasters in cold regions. Estimation of the freeze-thaw damage degree and strengths loss of rocks are crucial for the prevention of freeze-thaw disasters. The main aim of this research is to investigate the influence of water saturation on the deterioration of rocks under freeze-thaw and find the best evaluation index. P-wave velocity
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Peridynamic modeling for impact failure of wet concrete considering the influence of saturation Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-10 Liwei Wu, Dan Huang, Qipeng Ma, Zhiyuan Li, Xuehao Yao
In this paper, a modified intermediately homogenized peridynamic (IH-PD) model for analyzing impact failure of wet concrete has been presented under the configuration of ordinary state-based peridynamic theory. The meso-structural properties of concrete are linked to the macroscopic mechanical behavior in the IH-PD model, where the heterogeneity of concrete is taken into account, and the calculation
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Compressive stress-strain relationships of concrete exposed to elevated temperatures based on mesoscopic damage method Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-09 Wei-Feng Bai, Wei-Li Wang, Jun-Feng Guan, Jian-you Wang, Chen-yang Yuan
Damage evolution in concrete after high temperature is a complicated procedure, in which the pre-peak strain hardening behaviour, the post-peak strain softening behaviour and the impact of high temperature play key roles. Uniaxial and biaxial compression damage models of concrete considering high temperature degradation effect are proposed based on damage theory and experimental phenomena. They consider
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Combined effects of cryogenic temperature and strain rates on compressive behavior of concrete Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-08 Liu Jin, Kaixin Liu, Renbo Zhang, Wenxuan Yu, Xiuli Du, Xiaofang Deng
Concrete structures in extremely cryogenic environments may be subject to dynamic loadings as a result of occasional accidents or terrorist attacks during the service life. Considering the cryogenic temperature effect and strain rate effect of each phase for concrete, a meso-scale numerical model of the concrete subjected to cryogenic temperature and dynamic loadings was presented in this study, which
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Impact compression damages of 3D braided composites with/without axial yarns after thermo-oxidative ageing Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-01 Jing Long, Feng Xu, Yuanyuan Wu, Yousong Xue, Baozhong Sun, Bohong Gu, Wei Zhang
Ageing conditions and braided structures will affect dynamic damage and failure mechanisms of 3D braided composites. Here we report the influence of thermo-oxidative ageing on impact compression behaviors of 3D braided composite with and without axial yarns, i.e., four directional (3D4d) and five directional (3D5d) braided composites. We found a significant difference in mechanical properties between
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A CDM-based unified viscoplastic constitutive model of FLCs and FFLCs for boron steel under hot stamping conditions Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-06-05 Ruiqiang Zhang, Zhusheng Shi, Victoria A Yardley, Jianguo Lin
Forming limit curves (FLCs), which are constructed using the limit strains at localised necking, are the most widely used tools for the evaluation of the formability of sheet metals. Fracture forming limit curves (FFLCs) are more recently developed, complementary tools for formability evaluation which are instead constructed using the limit strains at fracture. Since the formability depends strongly
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A directional microcrack damage theory for brittle solids based on continuous hyperplasticity Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-05-11 Mitul Sisodiya, Yida Zhang
We present a novel microcrack-damage theory for brittle solids under compression. Instead of using internal variables like zeroth, second or fourth rank damage tensors, the state of material damage is represented by an internal function that encapsulates the information of direction, density and size of microcracks. Just like other internal variables, the evolution of this state function must obey
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Weakening-strengthening evolution law of concrete flexural strength under sulfate attack Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-05-06 Tingwei Chen, Jiankang Chen, Jinhan Chen
For plain concrete materials, the degradation of concrete by seawater is mainly reflected in the corrosion of sulfate ions. In this study, the variation in the flexural strength of concrete specimens with different water-cement ratios under different sulfate concentrations for 470 days is explored, and the effect of sulfate environment on the decay of flexural strength of concrete with corrosion time
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Damage characterization of dental nanocomposite adhesive in orthodontic treatment applications Int. J. Damage Mech. (IF 4.2) Pub Date : 2022-04-28 A Karimzadeh, S S R Koloor, M Petrů, MR Ayatollahi, MY Yahya
In orthodontic treatments, mechanical characterization of orthodontic bracket bonded to the tooth is essential to determine the bond strength and mechanical behavior of the bracket-adhesive-tooth system. In this study, the linear-nonlinear mechanical behavior and damage characterization of Filtek Z350 XT (3M ESPE) nanocomposite as a dental adhesive material to bond orthodontic brackets to tooth enamel