Feasibility Study on Numerical Modeling of Large-Scale Naval Fluid- Filled Structure: Contact-Impact Problems.

摘要

Modeling and testing of inflatable membrane structures for rapidly deployable port infrastructures is of interest to the US Navy's new capabilities development. For decades, the Navy has used small displacement landing craft to be the conduit between heavy-tonnage ships offshore and the landing zone ashore. This has been a means of transporting troops and their combat and logistics support. A problem with this procedure is that displacement landing craft can only get close enough to the beach to disembark vehicles and personnel to wade the final distance ashore. Although the water is shallow, the vehicles need to be designed to operate in a corrosive seawater environment. An alternative method the Navy considers is floating causeways. The major objective of this study is to assess the feasibility of using an advanced numerical code to simulate the dynamics of a mobile support platform for the deployment, retrieval, and operation of the MOSES inflatable causeway under wave action. This is achieved by developing a numerical model of the wave basin with wave generation over a rigid basin bottom to study the dynamic behavior of MOSES under laboratory conditions. The purpose of this study is to compare qualitatively the numerical predictions with experimental results obtained in the experimental study to assess the feasibility of such modeling.