基于ARLEQUIN方法的复合材料螺栓连接失效模拟

将ARLEQUIN方法应用于螺栓连接件的挤压失效模拟中，将连接件层合板分为孔边局部损伤区、无损伤区和过渡区。局部损伤区精细化划分网格，无损伤区采用粗网格划分，过渡区通用ARLEQUIN方法将损伤区和无损伤区进行耦合。采用用户自定义单元在ABAQUS中引入ARLEQUIN方法，实现了基于ARLEQUIN方法的复合材料螺栓连接的三维有限元失效模拟。建立了传统有限元模型和ARLEQUIN模型，并与试验结果进行了对比，表明在保证与传统有限元模型相同计算精度的情况下，采用ARLEQUIN方法进行复合材料螺栓连接失效模拟大大降低了计算资源，具有更高的效率。

Failure Simulation of Composite Bolted Joint Based on ARLEQUIN Method

This paper aims to implement the ARLEQUIN method to simulate the bearing failure in com-posite bolted joints. The laminate of bolted joint is divided into failure zone around the hole,no-failure zone and transition zone. Fine mesh is made in the failure zone, while no-failure zone adopts coarse mesh. The ARLEQUIN method is used to couple the failure zone and no-failure zone in the transition zone. By user defined elements,the ARLEQUIN method is embed into ABAQUS. Numerical simulation of single bolt,simple shear bolt joints is completed and verified by experiment. The results indicate that com-posite bolted joint simulation based on ARLEQUIN method greatly reduces the computing resources and has a higher efficiency with the same prediction precision of conventional finite element model.