Damage simulator를 이용한 선박의 손상강도에 관한 연구
A Study of Strength of Damaged Ship Structures
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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.
참고문헌 (4)
- "연성재료의 소성손상 구성방정식에 관한 연구", (4), pp.179~192 (1992)
- "Time of the Rupture Process under Creep Conditions", • kacha(v), pp.26~31 (1958)
- "Elasto-Plastic Damage Analysis of Functionally Graded Materials Subjected to Thermal Shock and Thermal Cycle", 45(3), pp.331~338 (2002)
- "How to use Damage Mechanics", pp.223~245 (1984)