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In this paper the penalty element and the virtual beam element are proposed to handle the weak connection between the shell element and the 3-D solid element so as to take weld effects into account in stress analysis. In the mixed FEM model presented here, the weld zone is discreted by plate-shell elements and 3D isoparametric elements. Numerical calculations have been performed for T-joint. The results obtained with this model are verified by experimental data. It seems that the location of the hot spot and SCF are greatly affected by the shape and size of the weld.
In this paper the penalty element and the virtual beam element are proposed to handle the weak connection between the shell element and the 3-D solid element so as to take weld effects into account in stress analysis. weld zone is discreted by plate-shell elements and 3D isoparametric elements. Numerical calculations have been performed for T-joint. The results obtained with this model are verified by experimental data. It seems that the location of the hot spot and SCF are greatly affected by the shape and size of the weld.