无错距强力旋压连杆衬套过程数值模拟研究

以发动机的锡青铜连杆衬套为研究对象,运用DEFORM-3D有限元软件对连杆衬套毛坯的无错距强力旋压过程进行了数值模拟。根据模拟结果,重点分析了在旋压过程中的金属流动速度规律、旋轮的受力以及毛坯的等效应力应变的分布情况。得出了旋压过程中毛坯径向和切向流动速度、大小和方向相似,与毛坯壁厚中心点的流动速度始终相反的正弦分布规律,旋轮所受径向和切向力分布相似且轴向受力最小,旋压过程中等效—应力应变主要分布在旋轮与毛坯的接触区域,远离接触区域的等效—应变较小,毛坯内部存在残余应力等。

Numerical Simulation Research on Process of Rod Bushing with Non-Staggered Power Spinning

This paper takes tin bronze connecting rod blank of engine as the research object and uses DEFORM-3D finite element software for the rod bushing with non-staggered power spinning process to simulated numerically.According to the simulation results,the metal flow velocity,the force of the rotating wheel and the distribution of equivalent stress-strain are analyzed.In the process of spinning,the radial and tangential flow velocity,size,and direction are similar.However op-posite to that of the center point of the blank wall thickness;The roller under radial and tangential force distribution curve is similar,among the three component axial force is minimum;The equivalent strain during spinning process are mainly dis-tributed in the contact area of the roller and the blank,and it is lesser away from the contact area.The strain residual stress exists in the blank.