摘要
提出了一种基于近场动力学理论的纤维增强复合材料层压板的渐进损伤分析方法.在弹性力学和复合材料力学的基础上,推导了适用于近场动力学建模的微模量和临界伸长率等基本参量,结合经典层压板理论中的偏轴模量,构建了适用于各向异性材料的对点力函数,可分析3种形式的损伤:纤维断裂,基体开裂和分层破坏.分析了含圆孔层压板在拉伸载荷作用下的破坏过程,预测结果与试验结果吻合良好.
A new method for progressive damage analysis of fiber-reinforced composite laminates based on peridynamic theory was proposed.The basic parameters,micromodulus and critical stretch for peridynamic modeling were deduced based on elasticity and composite mechanics.The concept of off-axial modulus was introduced into the bonds’ definition to establish a pairwise force function for anisotropic materials.This approach was able to analyze three types of damages： fiber fracture,matrix fracture and delaminations.Based on this approach,laminate with an open hole was subjected to a tensile load to simulate the progressive damage process.The predictions showed good agreements with experimental results.
出处
《力学学报》
EI
CSCD
北大核心
2013年第4期624-628,共5页
Chinese Journal of Theoretical and Applied Mechanics
