Welding residual stress is caused in welding. Its release and redistribution greatly affect milling deformation during milling process. In order to study the law of its release and redistribution, the milling finite element modeling of welding workpiece is established. The original residual stress suggested in the milling finite element analysis is obtained by using minimum welding residual stress and them the milling residual stress and deformation of welding workpiece are gained. At last, its release and redistribution and milling deformation are analyzed.%焊接过程会产生残余应力,铣削加工后焊接残余应力释放和重新分布对铣削变形产生很大影响.为了研究残余应力释放和重新分布规律,采用有限元方法以最小焊接残余应力作为初始应力对铣削加工进行了数值模拟,获得了焊接试验件铣削加工残余应力和变形,并对焊接残余应力释放和重新分布以及加工变形进行了分析.
展开▼
