焊接结构CAE中数值模拟技术的实现

The Implementation of Numerical Simulation Technique in CAE of Welding Structures

在焊接结构的 CAE中 ,复杂焊接结构数值模拟的高效运算和精确建模是实现三维分析的主要困难。针对实际结构应力和变形的数值模拟 ,论述焊接移动热源、动态可逆的自适应加密网格技术、焊缝熔敷金属填充的处理、并行计算和网络技术、材料性能在高温时的处理、降阶积分等几个关键性的技术问题和解决方法。

In CAE of welded structures, the effective computing and accurate modeling of numerical simulation are as the main problems in three-dimensional analysis. For the numerical simulation of stress and deformation in practical welded structures, some key problems and their solutions are presented in this paper,which include moving welding heat source, moving and reversible adaptive mesh, the simulation of weld fillet, the material properties at high temperature, the reduced integration, parallel computation and the network technique, etc..