玻璃钢/复合材料Issue(1)：18-22,5.
增韧复合材料的GI断裂韧性有限元模拟
FINITE ELEMENT SIMULATION OF GI FRACTURE TOUGHNESS OF TOUGHENED COMPOSITES
摘要
Abstract
The two-dimensional shell element model and cohesive force model were established by using abqaus finite element simulation software and the brittle constitutive model.Besides,the second nominal stress criterion were also used to simulate the fracture toughness of GI fracture with polyimide as the toughening layer.The influences of the normal phase stiffness,energy release rate and other parameters on the properties of the composites were discussed.The above experimental results,indicate that the simulation results are consistent with the actual situation in the curve trend.With the increase of the energy release rate,the interlaminar toughness increases with the increase of the energy release rate,which is mainly caused by the absorption of energy by plastic buckling such as pumping and breaking of fibers.In addition,the normal phase stiffness has a significant effect on the brittle fracture after interlaminar failure.Larger normal phase stiffness leads to the fluctuation of the load-displacement curve,which shows the interlaminar brittleness.关键词
复合材料增韧/GI断裂韧性/有限元分析Key words
composites toughening/GI fracture toughness/finite element analysis分类
通用工业技术引用本文复制引用
田达,傅宏俊,吴利伟,王庆涛,马崇启..增韧复合材料的GI断裂韧性有限元模拟[J].玻璃钢/复合材料,2018,(1):18-22,5.基金项目
国家自然科学基金项目(51003075) （51003075）
