Prediction of Welding Residual Stress for Ring-stiffened Cylindrical Shell Structure Based on Inherent Strain
The ring-stiffened cylindrical shell is usually designed and built with high strength steel which is sensitive to residualstress. In order to obtain the distribution of the welding residual stress in different rib arrangement modes, firstly, the residual stress of welding plank is studied by the experiments and numerical simulation to verify the applicability of inherent strain approximation formula. Then, numerical analysis is performed for internal&external ring-stiffened cylindrical shell,and the results show that the radial deformation of shell plate is basically consistent with experiment data and the residual stress is mainly concentrated on welds;The compressive stress of internal ring-stiffened cylindrical shell is greater.
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万方数据
维普
