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总览 评价 梁利平 * , 吴桂英 ( 太原理工大学力学系; ) 摘要: 本文运用有限元软件ANSYS/LS-DYNA中流固耦合方法(ALE)模拟爆炸载荷作用下圆板的反直观行为。文中通过改变圆板与炸药中心之间距离,模拟出了圆板的反直观行为;最后重点研究TNT爆压值大小
梁利平*, 吴桂英
(
太原理工大学力学系; )
摘要:
本文运用有限元软件ANSYS/LS-DYNA中流固耦合方法(ALE)模拟爆炸载荷作用下圆板的反直观行为。文中通过改变圆板与炸药中心之间距离,模拟出了圆板的反直观行为;最后重点研究TNT爆压值大小与应变率对反直观行为的影响。结果表明:采用ALE方法可以很好的研究爆炸载荷作用下圆板反直观行为;爆压对圆板反直观行为影响较小,应变率影响较大;进行爆炸载荷作用下反直观行为数值模拟分析时必须考虑应变率的影响。
关键词:
ALE;爆炸冲击波;反直观行为;数值分析
Liang Liping*, Wu Guiying
(
Department of Mechanics ,Taiyuan University of Technology ; )
Abstract:
This paper studied the anomalous response of circular plate subjected to TNT blast loading using finite element software ANSYS/LS-DYNA by fluid-solid coupling method (ALE). The anomalous response of circular plate subjected to TNT blast loading was simulated by changing the distance of plate and blasting point, especially the influence of blast pressure and strain rate analyzed. It is found by numerical analyses that ALE was the best method to study structural anomalous response. The anomalous dynamic behavior is insensitive for blast pressure and hypersensitive for strain rate . The strain rate should be taken into account for the anomalous response of circular plate subjected to blast loading.
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