弯曲载荷下机织复合材料T型接头渐进失效分析

根据树脂传递模塑(RTM)成型的缎纹机织复合材料T型接头的结构特征和纤维布局特点, 基于ANSYS有限元数值分析平台, 建立符合其真实结构的几何模型和有限元分析模型。基于渐进失效强度预测方法的基本思想, 使用有限元计算软件ANSYS的参数化设计语言(APDL)开发相应的程序, 实现改进形式的Hashin失效准则。采用合适的最终失效评价方法, 建立二维机织结构复合材料T型接头受弯曲载荷时的渐进失效预测方法, 能够有效地模拟从初始加载到最终失效过程中机织复合材料T型接头结构的力学响应及损伤的萌生与发展, 并预测结构的静强度。 

Progressive failure analysis of woven composite T-j oints under bending load

According to the structure characteristics and fiber layout characteristics of the satin woven composite T-joint manufacturing by resin transfer moulding (RTM),and based on the ANSYS finite element numerical analy-sis platform,geometric model and finite element model which conforms to the actual structure was set up.Based on the basic idea of progressive failure strength prediction method,the numerical analysis of a modified form of Hashin failure criteria was implemented using parametric design language (APDL)of the finite element analysis software ANSYS to develop the corresponding program.A progressive failure analysis model of 2D woven composites T-joints under bending load has been developed,which using an appropriate to evaluate ultimate failure.The method can efficiently simulate mechanical response and the initiation and propagation of damage of woven composite T-joints in the process from initial loading to ultimate failure,and predict the structural static strength.