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A Mesh Generation Method to Estimate Welding Deformation for Shell Structures

쉘 구조물의 용접 변형량 예측을 위한 요소망 생성 방법

  • Received : 2016.05.15
  • Accepted : 2016.05.17
  • Published : 2016.06.01

Abstract

In shipbuilding, hull assemblies are manufactured by welding. The thermal deformation caused by the welding produces shape deformation. Counter-deformed design methods have been used in shipyards to cope with the weld-induced deformation of ship assembles. Finite element methods (FEMs) are frequently used to estimate welding distortion in the counter-deformed design. For the estimation of welding distortion, producing uniform rectangular elements is required to enter thermal loads on the welding line and obtain accurate analysis results. In this paper, a new automatic mesh generation method is proposed for prediction of welding deformation in FEM. Meshes are constructed for test cases to demonstrate the feasibility of the proposed mesh generation method.

Keywords

Counter-deformed design;Shipbuilding;Quadrilateral mesh generation;Welding deformation prediction

References

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