Hydrocode Modeling of Torpedo Anchor Installation in Soils

Le résumé fourni par la source

Results of numerical models to simulate torpedo anchor installation in soils are presented. An explicit dynamics finite element hydrocode was used to model installation of a torpedo anchor in a sandy soil deposit. The constitutive model used consisted of an equation of state to model compaction and wave propagation, along with a rate independent frictional strength model to simulate the frictional soil response. An arbitrary Lagrangian-Eulerian formulation was used to model the soil medium, along with a gap interaction algorithm and a strain penalty model to accommodate large mesh distortions during torpedo installation. Model validation was carried out by comparison against laboratory results of torpedo embedment in synthetic transparent soil models. Constitutive parameters were derived from uniaxial and triaxial tests on transparent soils. Comparison of the results showed that the simulations are capable of capturing the salient features of soil kinematics during torpedo anchor installation.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.