Prediction of Butt Welding Deformation of Curved Shell Plates by Inherent Strain Method

摘要

In order to achieve high productivity of assembly blacks of hull structure, it is impor- tant to predict welding deformations accurately and to apply these data to the pro- duction planning. For this purpose the transient thermal-elastic-plastic analysis by FEM(finite-element method) may be utilized. However, this method is not a practical Approach to analyze he deformation of large and complex structures, such as ship Hull structures, in view of time and cost. Whereas the inherent strain method deals the Residual strain near the weld line as the inherent strain, therefore the residual defor- mation can be simply calculated by elastic analysis.