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首页> 外文会议>International conference on transportation engineering >Numerical Analysis on Welding Deformation and Residual Stress of an Aluminum Alloy Floor of EMU Bodywork
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Numerical Analysis on Welding Deformation and Residual Stress of an Aluminum Alloy Floor of EMU Bodywork

机译：动车组车身铝合金地板焊接变形和残余应力的数值分析

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摘要

Numerical simulation of welding of hollow aluminum alloy profile for EMU bodywork floor was performed by using a software SYSWELD. The sparse and close finite model was used for enhancing computation efficiency and precision, the heat source model of double elliptical were utilized to simulate MIG welding, the welding deformations and residual stresses were achieved, the four schemes of weld orders are analyzed an compared, a good weld orders is obtained for reducing the welding deformations and residual stresses. The results show that a reasonable arrange of weld orders can remarkably reducing weld distortions and residual stresses.
机译：使用软件SYSWELD进行了EMU车身地板空心铝合金型材焊接的数值模拟。使用稀疏和有限的有限模型来提高计算效率和精度，使用双椭圆热源模型来模拟MIG焊接，获得焊接变形和残余应力，分析了四种焊接顺序方案，并进行了比较，获得良好的焊接顺序以减少焊接变形和残余应力。结果表明，合理安排焊接顺序可以显着减少焊接变形和残余应力。

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