反对称双犬骨螺栓连接强度可靠性仿真∗

摘要

为了确定反对称双犬骨螺栓连接件结构破坏起始位置和静强度可靠性。采用ABAQUS有限元软件建立连接件模型，分析紧固孔孔周应力分布；根据有限元计算结果，采用改进均值法和响应面法进行静强度可靠性仿真，同时对仿真结果进行比较。%In this paper, where the failure takes place firstly is determined and the reliability of static strength for the asym-metrical dog-bone mechanical joint is simulated. The model of asymmetrical dog-bone mechanical joint is set up by ABAQUS finite element software and the stress distribution at countersunk fastener holes is analyzed. Based on the finite element result, advanced mean value first order method and response surface method are used to simulate the reliability of static strength and the simulated results are compared at the same time.