缝合混杂针织结构复合材料准静态弯曲试验及有限元模拟

利用MTS-810材料试验机，研究缝合层合板复合材料的准静态三点弯曲实验，分析准静态下材料的破坏机制，即上表面的压缩破坏和下表面的拉伸破坏。根据缝合层合板的细观结构建立单胞模型，连接用户子程序，进行有限元模拟，深入分析材料破坏机理和最终破坏模式，两者均说明经向材料和纬向材料的破坏无显著区别，并且两者的载荷-位移曲线和能量吸收曲线具有良好的一致性，证明有限元模拟的正确性，为进一步研究纺织复合材料的力学性能奠定良好的基础。

Quasi-Static Bending Testing of Stitching Hybrid Knitted Structures and Finite Element Simulation

The quasi-static three point bend properties of the stitched laminates were tested on MTS-810 and the damage mechanism was analyzed under quasi-static test.It was found compressive damage of the upper surface and the tensile damage of the lower surface,finite element method(FEM) which is based on unit-cell model and compiled subroutine.The composite failure mechanisms and failure mode were further analyzed.The two also proved there is no distinct differences between warp and weft directions,the load-displac...