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http://dx.doi.org/10.3744/SNAK.2007.44.4.439

A Study of Strength of Damaged Ship Structures Using Damage Simulator  

Han, Dae-Suk (Dept. of Naval Architecture and Ocean Engineering, Pusan National Univ.)
Cho, Dae-Seung (Dept. of Naval Architecture and Ocean Engineering, Pusan National Univ.)
Kim, Jin-Hyung (Dept. of Naval Architecture and Ocean Engineering, Pusan National Univ.)
Lee, Tak-Kee (Korea Institute of Machinery and Materials)
Rim, Chae-Whan (Korea Institute of Machinery and Materials)
Lee, Jae-Myung (Dept. of Naval Architecture and Ocean Engineering, Pusan National Univ.)
Publication Information
Journal of the Society of Naval Architects of Korea / v.44, no.4, 2007 , pp. 439-444 More about this Journal
Abstract
A damage analysis simulator, which is applicable for evaluating the residual strength of damaged ship, was developed in this paper. For this process, CDM (Continuum Damage Mechanics) approach has been implemented to the simulator by virtue of the numerical technique for evaluation of crack initiation and/or enlargement. A damage calculation program has been linked with a commercial finite element analysis code (NASTRAN) and a ultimate strength evaluation program (LSAP) in order to assess residual strength of damaged ship. As a results of series calculation for the frigate model, giving the quantitative structural damage to the ultimate strength evaluation, a residual strength with damage is predicted to be at least 70 percentage lower than the case of intact condition. It was found that the proposed technique can be used as a design support tool in the field of simulation based ship design.
Keywords
Continuum damage mechanics; FEM; Ship residual strength;
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