大底脚螺纹抽钉正向设计方法研究

Study on Forward Design Process of Screw Type Blind Rivets

通过理论分析、有限元仿真和实验验证的方式进行大底脚螺纹抽钉从1到0的反向应用基础研究,建立了安装过程中力的演变规律和平衡关系,得到安装性能(预紧力、鼓包直径和高度)与关键几何参数的匹配关系,开发了可实现自动建模和仿真计算的参数化求解模块。研究结果对提高大底脚螺纹抽钉的可靠性、经济效益,推动自主研发进程具有指导意义。

Through theoretical analysis,finite element simulation,and experimental verification,the reverse research from 1 to 0 on basic applications of screw type blind rivets was studied.The evolution and equilibrium of forces during installation processes were established.The relationships of installation performance(preload,diameter and height of blind head)and key geometric parameters were obtained.And a parametric module was developed,which might achieve automatic modeling and simulation calculations.The results have guiding significance for enhancing connection reliability,improving economic benefits,and for promoting the processes of independent research and development of the screw type blind rivets.