Numerical simulation of far-field underwater explosion-induced damage of ship structure

A.-G. Geffroy; P. Longère; B. Leblé

doi:doi:10.1051/dymat/2009231

All issues

Volume 2 (2009)

10.1051/dymat/2009231

Abstract

Issue		DYMAT 2009 Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1635 - 1641
Section		Numerical Simulations
DOI		https://doi.org/10.1051/dymat/2009231
Published online		15 September 2009

DYMAT 2009 (2009) 1635-1641
DOI: 10.1051/dymat/2009231

Numerical simulation of far-field underwater explosion-induced damage of ship structure

A.-G. Geffroy^{1, 2}, P. Longère¹ and B. Leblé²

¹ Université Européenne de Bretagne, UBS-LIMATB, 56321 Lorient, France
² DCNS, 56311 Lorient, France

Published online: 15 September 2009

Abstract
The topic of the present work is mainly concerned with the numerical simulations of the response of a ship structure submitted to a far-field underwater explosion. The goal is to preserve sailing functions of the ship and the integrity of sensitive areas. We are in particular interested in the numerical response of ship hulls to the first, high energy shock wave induced by the explosion by considering various constitutive models and boundary conditions. This systematic study shows clearly the necessity of accounting for strain and strain rate hardening as well as thermal and damage softening.