Nonlinear fluid-structure interaction in a flexible shelter under blast loading

摘要: Recently, numerous flexible structures have been employed in various fields of industry. Loading conditions sustained by these are often not described well enough for engineering analyses even though important. Here, a tent with an interior Collective Protection System, which is subjected to explosion, analyzed. The protects personnel from biological and chemical agents pressurized liner inside the as environmental barrier. Field tests showed unexpected damage liner, most occurred on tent’s leeward side. To solve this problem, performed, involving material characteristics canvas, zip seals, modeling blast loading over tent, structural response collaborative research works others. It was found that can be analyzed separately due interaction between structure dynamic pressure loading. In dissertation, loadings imposed both exterior sides airblasts resulting responses were studied. First, obtained newly proposed theoretical method analytical/empirical models developed into FORTRAN program. Then, numerical iterative Fluid-Structure Interaction using Computational Fluid Dynamics Structural simulate wave propagation outside calculate loads it. All results compared field test data conducted Air Force Research Laboratory. experimental gathered gauges attached surfaces at different locations. comparison methods good design tool analyze rigid or under explosive loads. particular, causes failure explained. Also, effect fluid-structure should considered load calculation where deflection rate influence solution flow surrounding structure.