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首页> 外文期刊>International Journal of Naval Architecture and Ocean Engineering >A study on an efficient prediction of welding deformation for T-joint laser welding of sandwich panel Part II: Proposal of a method to use shell element model
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A study on an efficient prediction of welding deformation for T-joint laser welding of sandwich panel Part II: Proposal of a method to use shell element model

机译：夹芯板T型接头激光焊接有效变形预测的研究第二部分：壳单元模型使用方法的建议

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ABSTRACT I-core sandwich panel that has been used more widely is assembled using high power CO 2 laser welding. Kim et al. (2013) proposed a circular cone type heat source model for the T-joint laser welding between face plate and core. It can cover the negative defocus which is commonly adopted in T-joint laser welding to provide deeper penetration. In part I, a volumetric heat source model is proposed and it is verified thorough a comparison of melting zone on the cross section with experiment results. The proposed model can be used for heat transfer analysis and thermal elasto-plastic analysis to predict welding deformation that occurs during laser welding. In terms of computational time, since the thermal elasto-plastic analysis using 3D solid elements is quite time consuming, shell element model with multi-layers have been employed instead. However, the conventional layered approach is not appropriate for the application of heat load at T-Joint. This paper, Part II, suggests a new method to arrange different number of layers for face plate and core in order to impose heat load only to the face plate.
机译：使用大功率CO 2激光焊接组装了用途更广泛的抽象I芯夹芯板。 Kim等。 （2013年）提出了一种用于面板和型芯之间的T型接头激光焊接的圆锥形热源模型。它可以覆盖T型接头激光焊接中通常采用的负散焦，以提供更深的熔深。在第一部分中，提出了一个体积热源模型，并通过将横截面上的熔化区与实验结果进行比较来进行验证。该模型可用于传热分析和热弹塑性分析，以预测在激光焊接过程中发生的焊接变形。在计算时间方面，由于使用3D实体元素进行热弹塑性分析非常耗时，因此已改为使用具有多层的壳单元模型。但是，传统的分层方法不适用于在T型接头处施加热负荷。本文的第二部分提出了一种新方法，该方法可以为面板和型芯布置不同数量的层，以便仅对面板施加热负荷。

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