Simulation of high velocity concrete fragmentation using SPH/MLSPH

被引：220

作者：

Rabczuk, T ^{[1
]}

Eibl, J ^{[1
]}

机构：

[1] Univ Karlsruhe, Inst Concrete Struct & Bldg Mat, D-76128 Karlsruhe, Germany

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 2003年 / 56卷 / 10期

关键词：

meshfree methods; concrete; fragmentation; SPH; PARTICLE HYDRODYNAMICS; IMPACT COMPUTATIONS; MESHLESS METHODS; SPH;

D O I：

10.1002/nme.617

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The simulation of concrete fragmentation under explosive loading by a meshfree Lagrangian method, the smooth particle hydrodynamics method (SPH) is described. Two improvements regarding the completeness of the SPH-method are examined, first a normalization developed by Johnson and Beissel (NSPH) and second a moving least square (MLS) approach as modified by Scheffer (MLSPH). The SPH-Code is implemented in FORTRAN 90 and parallelized with MPI. A macroscopic constitutive law with isotropic damage for fracture and fragmentation for concrete is implemented in the SPH-Code. It is shown that the SPH-method is able to simulate the fracture and fragmentation of concrete slabs under contact detonation. The numerical results from the different SPH-methods are compared with the data from tests. The good agreement between calculation and experiment suggests that the SPH-program can predict the correct maximum pressure as well as the damage of the concrete slabs. Finally the fragment distributions of the tests and the numerical calculations are compared. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：1421 / 1444

页数：24

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