Study on Ultimate Tensile Strength of Carbon/Glass Hybrid Composite Perforated Plate
According to the tensile bearing characteristics of orthogonal carbon/glass hybrid composite perforated plates,the tensile strength tests of composite perforated plates with pure carbon fiber(CCCC),pure glass fiber(GGGG)and interlayer carbon/glass hybrid(CGGC and GCCG)were de-signed.Based on Hashin criterion and stiffness degradation criterion,Vumat subroutine was im-proved,and the progressive damage analysis of heterogeneous fiber reinforced materials was realized.The load-displacement curve,stress around the hole,ultimate strength and damage development process of these four stacked open-hole tensile specimens were predicted.The results show that the simulation results of progressive damage of heterogeneous fiber reinforced materials are close to the experimental results,which proves the accuracy of the improved method.The above four types of hy-brid composite perforated plates all failed in the direction perpendicular to the tensile load.The ulti-mate load and stiffness of carbon/glass hybrid perforated laminate are between pure carbon fiber and pure glass fiber perforated laminate,and the tensile strength of the structure of inner carbon outer glass(GCCG)is slightly higher than that of inner glass outer carbon(CGGC).In addition,under tensile load,all the hybrid perforated plates are damaged by CFRP layer first,and then the GFRP lay-er germinates and expands rapidly in a short time,which has nothing to do with the layering order.
万方数据
维普
