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桅杆的材料为Q345B,通过采用焊接的方式,将桅杆的底板、侧板、顶板和加强筋焊接成装配件。桅杆在焊后存在变形,需要通过热校形来减小和控制变形量。基于固有应变法对桅杆的焊接成型工艺进行仿真,通过三维弹塑性有限元仿真,得到焊接成型过程中焊缝周围的残余应力分布和固有应变分布趋势,进而通过固有应变法获得桅杆焊后的整体变形。
The mast is made of Q345B and the mast floor, side panels, roof and stiffener are welded into the assembly by welding. Post-weld mast deformation exists, the need to reduce and control the thermal deformation of the deformation. Based on the inherent strain method, the mast welding process is simulated. Through three-dimensional elasto-plastic finite element simulation, the residual stress distribution and the inherent strain distribution trend around the weld during the welding process are obtained, and then the whole post-welding whole of the mast Deformation.