摘要
建立了三维缎纹编织复合材料代表性体积单元(RVE)和紧固件剪切试件模型,引入周期性边界条件,建立了材料的宏观力学性能预报方法,并采用跨尺度计算方法对不同受载角度下的紧固件剪切破坏过程进行了有限元模拟。进行了三维缎纹编织复合材料紧固件的剪切试验,有限元计算结果与试验结果吻合较好,验证了本方法的可行性。分析了不同受载角度对剪切破坏模式及强度的影响,结果表明,该编织复合材料剪切强度随受载角度增大而降低,且具有不同的损伤起始位置和扩展过程。
A representative volume element （RVE） and shear specimen model of satin weave composite fastener is established and numerical model of prediction on effective elastic module is presented based on periodic boundary conditions. Cross-scale numeri- cal simulation of shear failure in different load angle is implemented. The uniaxial shear tests of satin weave composite fastener are performed. The shear strength obtained from finite element method （FEM） is in good agreement with the experimental results, which demonstrated the feasibility of the FEM model. The influence of different load angle in shear failure mode and strength is dis- cussed, which indicates the shear strength decreases as the load angle growth due to different failure mode.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2017年第7期121-128,共8页
Materials Reports
