Publications

Chen, N.-Z. and Guedes Soares, C. (2008), “Ultimate Longitudinal Strength of Ship Hulls in Composite Materials”, Journal of Ship Research, Vol. 52, Issue 3, pp. 184-193

A progressive collapse analysis to predict the ultimate longitudinal strength of ship hulls in composite materials is proposed. The load - average strain curve derived from a progressive failure nonlinear finite element analysis is developed for representing the behavior of each stiffened composite panel forming a hull cross section. The bending moment of ship hull under prescribed curvature is achieved by integrating the resultant force of each stiffened panel over a hull cross section based on the load - average strain curves. The ultimate longitudinal strength of ship hull is obtained from the curves of moment - curvature relationship of ship hull which is established by imposing progressive increasing curvatures of a hull cross section. An all-composite ship is analysed as an application. Comparison with a simplified method to investigate the influence of the time lag in collapse of individual members on ultimate longitudinal strength is made.

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