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Publications
Chen, B.Q. and Guedes Soares, C. (2015), “Study on ultimate strength of ship plates with calculated weld-induced residual stress”, Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.), Taylor & Francis Group, London, UK, pp. 513-522
The objective of this work is to assess the importance of an accurate description of the distribution of residual stress for the assessment of the ultimate strength of rectangular plate and stiffened panels. The ultimate strength is assessed for the plates with calculated welding residual stress by nonlinear finite element analyses and it is compared with the results of the cases taking into account the idealized residual stresses as well as the residual stresses calculated by Common Structural Rules. It is concluded that the shape of the idealized residual stress distribution is very similar to the calculated one, although its size can only be determined from the calculated results. For the specific case studied here the idealized distribution results in 2% higher ultimate strength, while the IACS CSR underestimates the post collapse behavior of the stiffened plate. The studies on the effects of initial geometrical distortion, boundary condition, element size and type, are also included.
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