车用复合材料层合板在弯曲载荷下损伤行为分析  

Damage Behavior Analysis of Vehicle Composite Laminates under Bending Load

作　　者：孟翔耀 董万鹏[1] Meng Xiangyao;Dong Wanpeng(Shanghai University of Engineering Technology,Shanghai 201600,China)

机构地区：[1]上海工程技术大学,上海市201600

出　　处：《农业装备与车辆工程》2021年第11期123-126,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：通过建立有限元力学模型,预测碳纤维铝合金层合板三点弯曲状态下的力学性能与材料损伤失效状态。基于Hashin失效判据和界面内聚力损伤本构所建立的力学有限元模型,可以实现对碳纤维铝合金层合板三点弯曲力学响应的计算和预测。结果表明,碳纤维铝合金层合板三点弯曲时先后发生纤维损伤、基体损伤以及层间失效现象。通过对比载荷-位移曲线与材料损伤情况,研究不同铺层角度对材料弯曲性能的影响。For carbon fiber reinforced aluminum alloy composite(CF/Al composite),the three-point bending damage evolution and fracture mechanics behavior were studied by means of mechanical numerical simulation,and the influence of lamination angle on the bending mechanical properties of the composite was analyzed.The results show that fiber damage,matrix damage and interlaminar failure occur in three-point bending.The mechanical finite element model based on Hashin failure criterion and interface cohesive force damage constitutive can be used to calculate and predict the mechanical response of CF/Al composite at three-point bending.The effects of different layup angles on the bending properties of materials were studied by comparing the load-displacement curves with the damage conditions of materials.

关 键 词：CF/AL复合材料 三点弯曲 失效模型 层间损伤 

分 类 号：U465.6[一般工业技术—材料科学与工程]