M. Bachmann, V. Avilov, A. Gumenyuk, and M. Rethmeier
BAM Federal Institute For Materials Research and Testing
Germany
高能激光束焊接使用局部热源来获得深而窄的焊缝和较高的焊接速率。但工程师会遇到一些问题，因为使用局部热源通常会导致金属构件变形；焊接熔池中熔滴的飞溅和喷射，会导致凹陷、咬边、弧坑、气孔或开裂。 对激光焊接工艺施加静磁场，可以改进其质量，并减少诸如飞溅这类的影响。德国 BAM 联邦材料研究与测试研究所正在使用 COMSOL Multiphysics 软件努力提升高能激光束焊接的质量。为了模拟高能激光束焊接模型，需要在传热、流体力学和电磁场下进行耦合求解。这使得 BAM 可以通过涵盖了马拉哥尼效应，重力、熔化的潜热和洛伦兹力的模型来精确地模拟焊接工艺
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