Recent developments of SPH in modeling explosion and impact problems

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Recent developments of SPH in modeling explosion and impact problems
	Liu MB(刘谋斌); Feng DL(冯殿垒); Guo ZM; Liu MB(刘谋斌)
	2013
会议名称	3rd International Conference on Particle-Based Methods Fundamentals and Applications, Particles 2013
会议日期	SEP 18-20, 2013
会议地点	Stuttgart, Germany
页码	428-435
通讯作者	刘谋斌
中文摘要	Explosion and impact problems are generally characterized by the presence of shock waves, intense localized materials response and intensive loadings. Most of the wave propagation hydro-codes for such problems use traditional grid based methods such as finite difference methods (FDM) and finite element methods (FEM). Though many successful achievements have been made using these methods, some numerical difficulties still exist. These numerical difficulties generally arise from large deformations, large inhomogeneities, and moving interfaces, free or movable boundaries. Smoothed particle hydrodynamics (SPH) is a Lagrangian, meshfree particle method, and has been widely applied to different areas in engineering and science. SPH method has been intensively used for simulating high strain hydrodynamics with material strength, due to its special features of meshfree, Lagrangian and particle nature. In this paper, some recent developments of the SPH in modelling explosion and impact problems will be introduced. A modified scheme for approximating kernel gradient (kernel gradient correction, or KGC) has been used in the SPH simulation to achieve better accuracy and stability. The modified SPH method is used to simulate a number of problems including 1D TNT detonation, linear shaped charge and explosively driven welding. The effectiveness of the modified SPH method has been demonstrated by comparative studies of the SPH results with data from other resources.
收录类别	EI
合作状况	国际
产权排序	[Liu M.B. 1;Feng D.L. 1;Guo, Z.M. 2 3.] 1 Chinese Academy of Sciences, Institute of Mechanics, Beijing 100190, China; 2 Laboratori de Càlcul Numèric (LaCàN), Universitat Politecnica de Catalunya (UPC), C. Jordi Girona 1-3, 08034 Barcelona, Spain; 3 North University of China, Xueyuan Road 3, 030051 Taiyuan Shanxi, China
会议录	Particle-Based Methods III: Fundamentals and Applications - Proceedings of the 3rd International Conference on Particle-based MethodsFundamentals and Applications, Particles 2013
会议录出版者	INTERNATIONAL CENTER FOR NUMERICAL METHODS IN ENGINEERING, BARCELONA
语种	英语
ISBN号	9788494153181
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/48297]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Liu MB(刘谋斌)
推荐引用方式 GB/T 7714	Liu MB,Feng DL,Guo ZM,et al. Recent developments of SPH in modeling explosion and impact problems[C]. 见:3rd International Conference on Particle-Based Methods Fundamentals and Applications, Particles 2013. Stuttgart, Germany. SEP 18-20, 2013.