WIT Press


Prediction And Analysis Of Critically Stressed Ship Sections

Price

Free (open access)

Paper DOI

10.2495/DF040201

Volume

47

Pages

7

Published

2004

Size

1,044 kb

Author(s)

H.K. A. Lee, Z.J. Liu, S.W. Gong & K.C. Hung

Abstract

Whole ship shock analysis (WSSA) is becoming a mandatory requirement in the design of naval platform. One of the key technical challenges in WSSA is the reduction of a complex ship design to a reasonable FE model size. An approach known as \“smearing” is commonly used to idealise the ship to a manageable number of DOFs, by using equivalent stiffness. This paper presents a novel technique to study the localized stress and deformation of a ship section using global parameters obtained from the WSSA. A 3D explicit finite element code is used to compute the critically stressed areas in the whole ship and predict the localized stresses in the ship section. This paper expounds the methodology of stress recovery through the conversion of the displacement time history from the whole ship to obtain the stress distributi

Keywords