筒体壁板预应力控制焊接变形的数值分析

摘要

本文利用ABAQUS有限元软件,结合固有应变法,系统地分析了预应力对筒体壁板上轴向短梁和周向长梁焊接变形的影响规律.基于计算结果,设计预加应力以控制变形,并对其结构进行强度和稳定性分析.%This paper systematically analyzed the regularity of the welding distortion of axial short beams and circumferential large beams of cylinder wall affected by pre-stress by using ABAQUS finite element software combined with inherent stain method. Based on the calculation results, this paper designed pres-tress to control the welding distortion, and analyzed the strength and the stability.