碳布增强木质层合板的有限元渐进损伤分析

摘要

In order to enhance the properties of composites,the carbon fiber cloth reinforced wooden laminate was taken as the sample plate,and a finite element progressive damage model was established. Both Hashin and BK failure criteria were taken as the failure judgment criteria,and the degradation method was used for the experimental analysis.In addition,the ABAQUS/Explicit software was used for the parametric modeling,and the damage of laminate under the low speed impact effect was forecasted and analyzed.The results show that compared with the delamination area of 0 layer laminate,the delamination area of carbon fiber cloth reinforced wooden laminate reduces about by 50%.The experimental and calculated values of impact contact force are in good agreement,which verifies the feasibility of degradation model and the validity of finite element model.%为了提高复合材料的性能，以碳布增强木质层合板为样板，建立了有限元渐进损伤分析模型。采用Hashin失效准则和BK失效准则作为失效判断依据，并采用退化方法进行了试验分析。利用ABAQUS／Explicit软件进行参数化建模，并对层合板在低速冲击作用下的损伤进行预测分析。结果表明，与0铺层型层合板的分层面积相比，碳布增强型木质层合板的分层面积约减小了50％。冲击接触力的试验值和计算值吻合良好，验证了退化模型的可行性与有限元模型的有效性。