With its unique kinetic penetration/chemical implosion combined damage ability, reactive damage element (RDE) can greatly or even leap the damage power of ammunition warhead, and has a promising application prospect in the field of ammunition. However, due to the high transient and nonlinear characteristics of shock release process, there is still a lack of real-time quantitative research methods to investigate its energy release process under impact loads, which makes it difficult to conduct in-depth analysis of its efficient damage mechanism. In this paper, the Grüneissen equation of state in the form is derived to solve the problem of the mechanics–thermotics–chemistry coupling response (MTCCR) of reactive materials (RMS) under impact load, and the calculation model of RMS temperature under impact is established. Based on the pressure equilibrium criterion, a two-phase theoretical model of the reaction flow field between the RMS reactant and the reaction product was proposed. Combined with the impact temperature rise theory, heat conduction theory and the Arrhenius chemical reaction kinetic model, the MTCCR model of RMS was established. The method of material point-impact induced chemical reaction (MPM-SICR) is presented and the energy release behavior of RMS is quantitatively researched in real-time. This method is used to numerically simulate the formation and impact induced energy release behavior of reactive materials jet against steel target. The simulation results are in good agreement with the experimental results, indicating that the model and method proposed in this paper can well characterize the dynamic MTCCR behavior of the RDE under the impact.

中文翻译：

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冲击载荷作用下反应材料的力学-热学-化学耦合响应模型及数值模拟

反应性毁伤元件（RDE）以其独特的动能侵彻/化学内爆复合毁伤能力，可大幅甚至跨越弹药战斗部的毁伤威力，在弹药领域具有广阔的应用前景。然而，由于冲击释放过程的高瞬态和非线性特性，目前仍缺乏实时定量研究方法来研究其在冲击载荷作用下的能量释放过程，导致难以对其高效性进行深入分析。损害机制。本文推导了 形式的 Grüneissen 状态方程来解决冲击载荷作用下反应材料（RMS）的力-热-化学耦合响应（MTCCR）问题，冲击下 RMS 温度的计算模型为已确立的。基于压力平衡准则，提出了RMS反应物与反应产物之间反应流场的两相理论模型。结合冲击温升理论、热传导理论和阿累尼乌斯化学反应动力学模型，建立了RMS的MTCCR模型。提出了材料点碰撞诱导化学反应（MPM-SICR）方法，实时定量研究了RMS的能量释放行为。该方法用于数值模拟反应材料射流对钢靶的形成和冲击引起的能量释放行为。仿真结果与实验结果吻合较好，表明本文提出的模型和方法能够很好地表征RDE在冲击下的动态MTCCR行为。