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针对不规则焊缝拼焊板坯的初始网格剖分问题,提出了基于向前推进方法和模板思想的拼焊板坯网格剖分算法.该算法处理了在剖分过程中出现的畸形单元,保证了模拟计算的稳定性,同时区分了拼焊板坯的各个拼焊区域,便于定义材料属性和厚度信息.该算法适用于任意复杂曲线焊缝的拼焊板坯,并可与自主开发的基于动力显式增量算法的FASTAMP软件相集成.选取实际生产的汽车覆盖件进行成形模拟,其成形结果验证了拼焊板剖分算法的准确性和实用性.
In order to solve the problem of initial meshing of irregular welded tailor blank, a grid partition algorithm of tailor welded blank is proposed based on the forward advancing method and the template idea. The algorithm deals with the deformity Unit to ensure the stability of the simulation and to distinguish the individual tailor welded areas of the tailor welded blank to facilitate the definition of material properties and thickness information.The algorithm is suitable for the tailor welded blank of any complex curved weld and can be used with autonomic The developed FASTAMP software based on dynamic explicit incremental algorithm is integrated, and the actual automobile panel is selected for forming simulation. The forming results verify the accuracy and practicability of the tailored welding algorithm.