Abstract

An analysis of the stability of quadrangular orthotropic composite panels under compression and shear is presented. The stability problem is solved by the Rayleigh–Ritz method in displacements with approximation of the deflection eigenmodes by Krylov functions. An assessment is made of the influence of fastening conditions and the laying pattern of layers of a composite structure on the parameters of the critical behavior of quadrangular panels. The accuracy of the numerical procedures is confirmed by comparison with the results of the exact solution of the main linearized equation of stability theory using the example of an isotropic plate.

中文翻译：

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加固结构和边界条件对四边形复合板稳定性的影响

摘要

对四边形正交各向异性复合材料板在压缩和剪切作用下的稳定性进行了分析。稳定性问题通过位移中的 Rayleigh-Ritz 方法通过 Krylov 函数逼近偏转本征模态来解决。评估了紧固条件和复合结构层的铺设模式对四边形面板关键性能参数的影响。通过与使用各向同性板的例子的稳定理论主线性方程的精确解的结果进行比较，证实了数值程序的准确性。