Abstract

This paper mainly do the calculation and research on the ultimate strength of stiffened plates with initial imperfection based on nonlinear FEM software—ABAQUS. It focused on the application of the initial imperfection of the stiffened plate and discussion of the element size, boundary conditions for nonlinear FEM calculation. This paper has carried out the ultimate strength calculation for the Faulkner stiffened plate with initial imperfection. In this paper, low buckling order mode is used to simulate the initial geometrical imperfection, and the method of initial stress import is used to simulate the residual stress. It is showed that the ways of dealing with initial imperfection in this paper is feasible and effective, and the results are agreed well with the experimental results.

Keywords:
geometrical imperfection, node, temperature load, imperfection, compressive stress, initial imperfection, loading, finite element model, processing method, calculation
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2015. International Society of Offshore and Polar Engineers
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