A Study on the Lateral Pressure Effect under Axial Compressive Load of Ship Platings

Park, Joo-Shin; Ko, Jae-Yong; Lee, Jun-Kyo

Journal of Navigation and Port Research 2005;29(6):515-522.
Published online August 31, 2005.

종방향 압축력을 받는 선체판부재의 횡압력 영향에 관한 연구

박주신, 고재용, 이준교

A Study on the Lateral Pressure Effect under Axial Compressive Load of Ship Platings

Joo-Shin Park, Jae-Yong Ko, Jun-Kyo Lee

Abstract

The ship plating is generally subjected to combined in-plane load and lateral pressure loads. In-plane loads include axial load and edge shear, which are mainly induced by overall hull girder bending and torsion of the vessel. Lateral pressure is due to water pressure and cargo. These load components are not always applied simultaneously, but more than one can normally exist and interact. Hence, for more rational and safe design of ship structures, it is of crucial importance to better understand the interaction relationship of the buckling and ultimate strength for ship plating under combined loads. Actual ship plates are subjected to relatively small water pressure except for the impact load due to slamming and panting etc. The present paper describes an accurate and fast procedure for analyzing the elastic-plastic large deflection behavior up to the ultimate limit state of ship plates under combined loads. In this paper, the ultimate strength characteristics of plates under axial compressive loads and lateral pressure loads are investigated through ANSYS elastic-plastic large deflection finite element analysis with varying lateral pressure load level.

Key Words: Ultimate Limited Stated Design;Lateral Pressure;Buckling;Ultimate Strength;Finite Element Method;Secondary Buckling