无头铆钉的数值模拟分析

Numerical Simulation Analysis of Headless Rivet

摘要: 为分析无头铆钉的铆接变形过程，采用ABAQUS软件建立仿真模型，从金属流动角度分析铆接变形过程的五个阶段：初始放置阶段、铆钉压缩阶段、填充阶段、镦头成形阶段、弹性回复阶段。铆钉越长，镦粗现象越明显，干涉量越大。钉孔直径增大，干涉量减小。相同尺寸的无头铆钉的干涉量大于有头铆钉。

Abstract: In order to analyze the riveting deformation process of headless rivets, the simulation model is established by ABAQUS software. Five stages of the riveting deformation process are analyzed from the perspective of metal flow: initial placement stage, rivet compression stage, filling stage, spade-head forming stage and elastic recovery stage. The longer the rivet, the more obvious phenomenon of the sensitivity and coarse, the greater the interference. When the diameter of the nail hole increases, the amount of interference decreases. The interference of headless rivets of the same size is greater than that of ordinary rivets.