Numerical and Experimental Analysis of Circular Plates Subjected to Underwater Explosion Loading
Considering shock wave; fluid-structure interaction; cavitations and gas bubble effects, underwater explosion is a very complex phenomenon. Although plastic deformation of thin plates under dynamic loading has been the subject of many researches conducted all around the world; because of usual large deflections and high strain rate effect, its not completely understood yet. Maximum deflection of fully clamped circular plates under explosion loading has been predicted using numerical analysis by means of LS-DYNA. These predictions have been compared to experimental result of tests that has been conducted on circular steel plates. Using explicit integration method; LS-DYNA is a strong code to analyze large plastic deformations under dynamic. Strain rate effect is taken into account using Cowper-Symonds relation. Comparison shows great agreement between numerical predictions and experimental results.
LS-DYNA explosion loading strain rate
Ali asghar SHEIKHI KOHSAR Hossein DALAYELI AH GHAMSARI Hadi MOETAMED AL SHARIATI Saeed TAVANGAR
Department of Material and Chemical Engineering Malek Ashtar University Of Technology, Iran Department of Mechanics Malek Ashtar University Of Technology, Iran Department of Mechanics, Khaje Nasir University Of Technology, Iran
国际会议
西安
英文
684-691
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）