论文部分内容阅读
应用有限元软件ABAQUS对搅拌摩擦点焊加筋壁板进行剪切稳定性计算,得到结构的失稳临界载荷;实施了铝合金搅拌摩擦焊加筋壁板剪切稳定性试验,得到结构的剪切失效形式及过程.结果表明,加筋壁板的破坏形式主要表现为焊点的脱焊或壁板的破损.提出了采用模拟焊点连接的有限元模型,分析了其在剪切载荷作用下的力学性能.结果表明,有限元计算结果与试验所得局部屈曲载荷较吻合,并模拟了剪切载荷作用下加筋壁板的失效过程,说明有限元模拟方法可以用来对该型结构的稳定性能进行分析,从而为该型结构的优化设计及工程应用提供分析参考.
The finite element software ABAQUS was used to calculate the shear stability of the stiffened stiffened stiffener by friction stir welding, and the critical stability load of the stiffened stiffener was obtained. The shearing stability of stiffened stiffened panel with aluminum alloy was tested and the shear The results show that the failure modes of stiffened panel mainly include the desoldering of welding spot or the damage of the panel.A finite element model using simulated welding spot connection is proposed.The effect of shear loading The results show that the finite element method is in good agreement with the local buckling load and the failure process of stiffened panel under shear loading is simulated.The results show that the finite element method can be used to simulate the structure of Stability analysis, so as to provide the analysis reference for the optimization design and engineering application of the structure.