摘要
扩展了Ladeveze的复合材料单层板的损伤模型,使之可用于考虑剪切粘弹性的复合材料层合板的损伤分析,基于VonKarman方程,建立了考虑损伤效应的粘弹性复合材料层合板的非线性动力学方程,且应用有限差分法和迭代法进行求解。数值结果表明,考虑结构的损伤和损伤演化时,结构的非线性动力响应将发生显著的变化。
The Ladeveze's damage model of the uni-ply for laminated plates is developed, and it is used to damage analysis of the generally laminated plates including shear viscoelasticity. On the basis of the Von Karman theory, the nonlinear equations of viscoelastic laminated composite plates with damage are derived, and by using the finite difference method and iteration method, these equations are solved. Numerical results show that the dynamic responses of the structure would change remarkably when considering the damage and damage evolution.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2005年第1期114-119,共6页
Acta Materiae Compositae Sinica
基金
国家自然科学基金项目(10272024)
关键词
剪切粘弹性
层合板
损伤效应
几何非线性
Control nonlinearities
Dynamic response
Failure analysis
Finite difference method
Iterative methods
Mathematical models
Plates (structural components)
Shear stress
Viscoelasticity
