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修正的虚拟介质方法用于水下爆炸冲击薄板的模拟

Modified ghost fluid method for underwater explosion on thin plate
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摘要 近期发展的修正的虚拟介质方法(MGFM)已经成功应用于求解多介质流动问题。本文研究了近体水下爆炸中强激波对薄板冲击的演变及薄板的动力响应过程。为了真实地考虑不同介质在界面处的非线性相互作用,本文将MGFM推广应用于处理流体与弹性薄板的相互作用。研究发现尽管流体和薄板结构的模拟基于各自不同的求解方法,但是用修正的虚拟介质方法处理二者之间的耦合是十分方便和有效的。数值实验模拟了水下爆炸的过程,表明本文的方法是可行的。 The modified ghost fluid method (MGFM) has been successfully applied to solve the multi-medium flow problem. In this paper, evolution of strong shock impacting on thin plate and dynamic response of the thin plate were investigated. We extended the MGFM to treat the flow and thin plate nonlinear interaction at the interface. Results disclose that the MGFM provides a convenient and effective way for handling the coupling of flow and thin plate, although the simulations of flow and plate structure are respectively based on different solving methods. Numerical examples of simulating the process of underwater explosion are presented to show that this method is feasible.
作者 许亮 刘铁钢
出处 《计算力学学报》 EI CAS CSCD 北大核心 2011年第B04期49-53,59,共6页 Chinese Journal of Computational Mechanics
基金 国家自然科学基金(10871018 & 10931004) 北京理工大学爆炸科学与技术国家重点实验室开放基金(KFJJ08-7)资助项目
关键词 水下爆炸 流固耦合 修正的虚拟介质方法 弹性薄板 RIEMANN问题 underwater explosion fluid-structure coupling modified ghost fluid method thin elastic plate riemann problem
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参考文献13

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