锻压技术

铆接压力预测与复合工艺参数下铆钉接头尺寸稳定性

英文标题：Prediction of riveting pressure and dimensional stability of rivet joints under composite process parameters

作者：刘伟军王琳苑泽伟张恒

分类号：V261；V262

出版年,卷(期):页码：2024,49(10):112-121

摘要：

塑性变形过程中的最大压铆力是控制铆接质量的重要参数，但目前很难得到准确的数值用于指导铆接过程。为此，根据铆钉金属材料的流动性，对铆接过程分阶段进行弹塑性力学分析，并以铆钉直径为Φ4 mm为界限，通过引入高度系数分析了初始铆钉直径对压铆力与铆钉镦头尺寸之间关系的影响，并通过单铆钉铆接有限元分析与试验进行了验证。在最大压铆力保持稳定的条件下，通过构建多铆钉铆接有限元模型，分析了多种铆接工艺参数对铆钉镦头尺寸和干涉量的影响，并进行试验研究。结果表明，在交替铆接下，初始铆钉直径越大、铆钉孔间距越大，铆接后铆钉镦头尺寸的稳定性越好，干涉量越佳。

The maximum riveting force during the plastic deformation process is an important parameter for controlling the quality of riveting, but it is currently difficult to obtain accurate values to guide the riveting process. Therefore, based on the fluidity of rivet metal materials, the elastic-plastic mechanical analysis was conducted on the riveting process in stages, taking the rivet diameter of Φ4 mm as the boundary, the influence of initial rivet diameter on the relationship between riveting force and rivet head size was analyzed by introducing the height coefficient, and then it was verified by the finite element analysis and experiment of single rivet riveting. Furthermore, under the condition of maintaining stable maximum riveting force, the influences of various riveting process parameters on the size and interference amount of rivet head were analyzed by constructing finite element model of multi-rivet riveting, and the experimental research was conducted. The results show that under the condition of alternating riveting, the larger the initial rivet diameter and the larger the spacing between rivet holes, the better the stability of rivet head size and the interference amount after riveting.

基金项目：

国家自然科学基金资助项目（52275455）；辽宁省振兴人才计划（XLYC2007133）；辽宁省科技计划项目（2022JH1/100800081）

作者简介：刘伟军（1969-），男，博士，教授,E-mail：wjliu@sut.edu.cn

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