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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)
Source PublicationParticle-Based Methods III: Fundamentals and Applications - Proceedings of the 3rd International Conference on Particle-based MethodsFundamentals and Applications, Particles 2013
Conference Name3rd International Conference on Particle-Based Methods Fundamentals and Applications, Particles 2013
Conference DateSEP 18-20, 2013
Conference PlaceStuttgart, Germany
AbstractExplosion 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.
Indexed ByEI
Document Type会议论文
Corresponding AuthorLiu MB(刘谋斌)
Recommended Citation
GB/T 7714
Liu MB,Feng DL,Guo ZM,et al. Recent developments of SPH in modeling explosion and impact problems[C]:INTERNATIONAL CENTER FOR NUMERICAL METHODS IN ENGINEERING, BARCELONA,2013:428-435.
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