基于Puck准则的2.5 D机织复合材料压缩性能研究

利用CATIA软件以经纬密为参数建立了2.5D纤维增强浅交弯联复合材料的参数化有限元模型，在Hy-perMesh专业网格划分工具中划分周期性网格，编写了Fortran程序嵌入周期性边界条件。采用Abaqus软件中VU-MAT子程序功能编写了基于Puck准则的材料损伤本构模型，通过渐进损伤分析，得到了机织织物宏观弹性模量以及经向压缩强度、破坏路径，并对破坏结果进行了分析。利用RTM工艺复合成型试件并进行力学测试，实验结果证实了仿真分析的准确性。

Study on Compressive Strength of 2 . 5 D Woven Composite Materials using Puck′s Criteria

Parametric models of 2 . 5 D fiber reinforced composite material were established with density of warp and weft by Catia software. By the professional tools HyperMesh,the mesh was generated. Based up-on this,boundary periodical condition was embed using Fortran. The damage constitution model of the composites based on Puck criteria was carried out by VUMAT subroutine in Abaqus. The damage of the bonded interface was simulated by cohesive element. Through the progressive damage analysis, woven structure's module ,longitude compressive strength and fracture trace were accessed. The results of simula-tion were analyzed,and were compared with the experimental results,which were obtained from the speci-men using RTM method. The experiments certified that simulation is reasonable.