Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

A Study of Strength of Damaged Ship Structures Using Damage Simulator

Damage simulator를 이용한 선박의 손상강도에 관한 연구

  • 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.)
  • Published : 2007.08.20
Download PDF
⟨ Previous Next ⟩

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

References

  1. 노인식, 임상전, 신종계, 1992. '연성재료의 소성손상 구성방정식에 관한 연구,' 대한조선학회 논문집, pp, 179-192
  2. Kachanov, L.M.. 1958, 'Time of the Rupture Process under Creep Conditions,' Izv. AN SSSR., Otd. Tekh. Nauk., No. 8, pp. 26-31
  3. Lee, J.M. and Toi, Y., 2002, 'Elasto-Plastic Damage Analysis of Functionally Graded Materials Subjected to Thermal Shock and Thermal Cycle,' JSME International Journal Series A-soild Mechanics and Material Engineering, Vol. 45, No. 3, pp. 331-338 https://doi.org/10.1299/jsmea.45.331
  4. Lemaitre J., 1984, 'How to use Damage Mechanics,' Nuclear Engineering and Design, Vol. 80, pp. 223-245