The paper presents the development of a technique for long-term 3-D structural analysis of the complete ship using a new stiffened plate element. The 3-D analysis involves the 3-D finite element modeling of the vessel and evaluation of hydrodynamic pressures using the 3-D linear diffraction theory. The elegance of the present stiffened plate element is that it can accommodate any number of arbitrarily oriented stiffeners within the plate element. Thus, the formulation obviates the use of mesh lines strictly along the longitudinals and transverses of the ship, which minimizes the required number of degrees of freedom of the finite element model of the complete vessel and reduces the computational effort considerably. The long-term prediction for the worst hydrodynamic pressures in the lifetime of the ship is carried out using the ISSC spectrum and scatter tables of Indian coastal waters. As an example problem, long-term structural analysis of a mini-bulk carrier in Indian coastal waters is presented in the paper. The long-term pressures are estimated with a probability of exceedence of and principal stresses are calculated. It is shown that the present method provides a new, elegant, and economic technique for long-term 3-D structural analysis of the complete ship.
Long-Term Structural Analysis of 3-D Ship Structures Using a New Stiffened Plate Element
Contributed by the OMAE Division for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received by the OMAE Division, February 7, 2000; revised manuscript received October 27, 2000. Associate Editor: M. M. Bernitsas.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Kumar , Y. V. S., Mukhopadhyay, M., and Sarkar, T. (October 27, 2000). "Long-Term Structural Analysis of 3-D Ship Structures Using a New Stiffened Plate Element ." ASME. J. Offshore Mech. Arct. Eng. February 2001; 123(1): 29–37. https://doi.org/10.1115/1.1336800
Download citation file:
- Ris (Zotero)
- Reference Manager