Hydroelasticity in Marine Hull Bottom Panels
2009 (English)Article in journal (Refereed) Submitted
The paper considers the hydroelastic interaction involved in panel- water impacts of high-speed craft. Hydroelastic panel-water impacts are simulated by using the ﬁnite element code LS-DYNA and a simpliﬁed in- house developed method. The mechanisms involved in the problem are stud- ied by a systematic series of simulations regarding diﬀerent impact veloc- ities, deadirse angels, boundary conditions, membrane eﬀects, and panel properties. The signiﬁcance of hydroelasticity on the problem is studied by comparing with methods addressing the problem as completely separable and quasi-static. It is shown that membrane eﬀects can have a large inﬂu- ence on the hydroelastic problem. The results further show that, accounting for hydroelasticity may yield larger maximum deﬂections and strains com- pared to completely separated and quasi-static solutions. The increase in the structural response when accounting for hydroelasticity can partly be explained by kinematic boundary condition eﬀects, and partly by inertia related added mass eﬀects.
Place, publisher, year, edition, pages
hydroelastic, ﬂuid-structure interaction, dynamic charac- terization, slamming, high-speed craft
IdentifiersURN: urn:nbn:se:kth:diva-10991OAI: oai:DiVA.org:kth-10991DiVA: diva2:233768
QS 201203152009-09-022009-09-022012-03-15Bibliographically approved