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A simplified FE simulation method with shell element for welding deformation and residual stress generated by multi-pass butt welding

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Abstract

In order to propose a simplified simulation method using finite element (FE) model for predicting deformation and residual stress generated by multi-pass butt welding, a series of experiments and numerical analyses were carried out. 3-pass butt welding of steel plates was simulated by the thermal elasto-plastic analysis with shell elements and with solid elements respectively. A heat input model for considering the temperature distribution in the thickness direction in shell elements was proposed. The validity of the heat input model was verified by comparing analytical results with experimental results or other analytical results using solid elements. Furthermore, the effectiveness for saving computing time by using shell elements was confirmed from the comparison with the case using solid elements. It was confirmed that the welding out-of-plane deformation and residual stress could be predicted with high accuracy by the proposed method. The computing time was around 14% of that by the precise model with solid elements.

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Correspondence to Hirohata Mikihito.

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Mikihito, H., Yoshito, I. A simplified FE simulation method with shell element for welding deformation and residual stress generated by multi-pass butt welding. Int J Steel Struct 16, 51–58 (2016). https://doi.org/10.1007/s13296-016-3005-0

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  • DOI: https://doi.org/10.1007/s13296-016-3005-0

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