Butt joint circumferential weld welding numerical value calculation method and system

The invention provides a butt joint annular welding seam welding numerical value calculation method and system.The method comprises the steps that a butt joint annular welding model established in advance is divided into grids, and material characteristics and a welding path are set; corresponding initial conditions, boundary conditions and a heat source model are set in the butt joint annular welding model; a target working condition is defined, and a temperature field and a stress field are determined according to the butt-joint annular welding model; simulation calculation of the welding numerical value of the butt joint annular welding seam can be achieved, the temperature change in the welding process and the post-welding residual stress are determined, the production efficiency is effectively improved, and the welding quality is guaranteed. 本发明提供一种对接环形焊缝焊接数值计算方法及系统，其中，方法包括：对预先建立的对接环形焊接模型划分网格，设置材料特性和焊接路径；在对接环形焊接模型中设置相应的初始条件、边界条件和热源模型；定义目标工况，根据对接环形焊接模型，确定温度场和应力场。能够实现对接环形焊缝的焊接数值的模拟计算，确定焊接过程中的温度变化以及焊后残余应力，有