开孔层压板拉伸破坏的2D渐进损伤模拟

2D Progressive Damage Simulation of Tensile Failure of Laminated Plate With Open Hole

运用渐进损伤的唯象描述方法,结合应力分析、失效判断、材料刚度退化对开孔层压板在拉伸载荷下从材料开始出现局部破坏直到整个构件失效的过程进行了基于2D有限元模型的数值模拟,模拟得到的位移载荷曲线与文献曲线基本一致,对最终破坏载荷的预测与文献中的试验值相差-2.0%,与文献预测值相差1%,表明渐进损伤方法可以在工程上用于层压板的失效模拟和预测。

The simulation of tensile failure process of a laminated plate with an open hole is presented here based on 2D FE model with a phenomenological method that is progressive damage analysis combing stress analysis and failure judgment with stiffness reduction of materials.Good conformity of displacement-load curves is shown between simulated result here and literature result.The predicted ultimate tensile failure load value is only-2.0% less than the test data and 1% greater than the predicted data in the literature,which validates the application of progressive damage analysis for composites laminate failure simulation and prediction in engineering.