基于有限元模拟的铆接工艺参数优化

Optimization of Riveting Process Parameters Based on Finite Element Simulation

为提高铆接质量,从分析孔周应力分布与铆接工艺参数规律的角度入手,利用ABAQUS软件对不同铆接工艺参数的压铆过程进行了有限元分析。深入探究了预制孔倒角、下压量、铆接速度等工艺参数对孔周应力的具体影响规律。通过等值线图和望小特性函数等数据分析手段,成功确定了最优的铆接工艺参数组合,并进行了拉伸试验验证。实验结果表明,采用倒角深度为0.3 mm、铆接速度为15 mm/s、下压量为3.2 mm的最优工艺参数组合,可以显著减少连接域的孔周应力,进而提升铆接质量。

In order to improve the quality of riveting,the finite element analysis of the press riveting process under different riveting process parameter was carried out by using ABAQUS software from the perspective of analyzing the hole edge stress distribution and the riveting process parameter rules.The specific influnce rules of process parameters such as prefabricated hole chamfer,press-down amount,riveting speed,etc.on the hole edge stress were deeply explored.Through data analysis method such as equivalent contour and small characteristic function,the optimal combination of riveting process parameters was successfully determined and verified by tensile test.The results show that the optimal process parameters with a chamfer depth of 0.3 mm,a riveting speed of 15 mm/s,and a downward pressure of 3.2 mm can significantly reduce the hole edge stress distribution in around the connecting domain and improve the riveting quality.