Finite Element Simulation on Failure of Elbow Impacted by Flat-nosed Missile
Finite element model of the elbow interiorly impacted by flat-nosed missile was established using ANSYS/LSDYNA. The Cowper-Symonds model was adopted. The rapture strain failure criterion was used to define the failure process. Numerical values were compared with experimental values obtained from the literature and the reliability of model was validated. The penetration failure mode of the elbow was analyzed. Factors of the critical rapture kinetic energy Er were acquired. It can be seen that the penetration failure mode is plugging induced by the extrusion and scraping dominated of axis stress. The effect of Do on Er can be neglected. Er increases with the increase of t/Do, DJt and R/Do when the missile mass m is invariable. The effect of m on Er should consider the factors of m and critical rapture velocity Vr.
Elbow Flat-nosed missile Penetration failure mode Critical rupture kinetic energy
Jian Liang Yu Xing Qing Yan Ling Chen
School of chemical machinery, Dalian university of technology, Dalian 116024, China
国际会议
上海
英文
38-42
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）