Numerical study on the fracture characteristics of projectile material under impact loading

被引：0

作者：

Duan Y. ^{[1
]}

Zhao Y. ^{[1
]}

Ren H. ^{[1
]}

机构：

[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing

来源：

Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2016年 / 46卷 / 04期

关键词：

Fracture characteristics; Marked particles; Numerical simulation; Parallel computing;

D O I：

10.1360/N092016-00006

中图分类号：

学科分类号：

摘要：

As one of the most common material used for projectile, the numerical simulation about high strength steel about its fracture characteristics under impact loading has always been emphasized. These kinds of problem often involved in the non-linear dynamic response and fracture of multi-material at high temperatures and pressures and strain rate. We put forwards a kind of mapping algorithm about local marked particles through coupling Lagrangian particles and Eulerian meshes. It is obtained by adding marked particles with regular hexahedral influence domain. According to the topological relation between particles and cells, the physical variables of cell are mapped to particles by weighted influence domain. Based on MPI standards, 3D parallel multi-material program with particles was developed. Besides, Johnson-Cook constitutive equation and fracture criterion about effective strain. A series of penetration in different working conditions were simulated and compared with experiment. It is found that the algorithm, which combines the best feature of Eulerian method and Lagrangian method, could be applied in simulating large deformation and fracture process of metal material. At the same time, the computational efficiency and accuracy could also be guaranteed. It is concluded that the improvement could make the algorithm more suitable for the simulation of various impact dynamic problems. © 2016, Science Press. All right reserved.

引用

页码：357 / 367

页数：10

共 14 条

[1]

Hopson M.V., Scott C.M., Patel R., Computational comparisons of homogeneous and statistical descriptions of AerMet100 steel subjected to high strain rate loading, Int J Impact Eng, 38, pp. 451-455, (2011)

[2]

Borvik T., Hopperstad O.S., Dey S., Et al., Strength and ductility of Weldox 460 E steel at high strain rates, elevated temperatures and various stress triaxialities, Eng Fract Mech, 72, pp. 1071-1087, (2005)

[3]

Attaway S., Mello F., Heinstein M., Et al., PRONTO-3D Users' Instructions: A Transient Dynamic Code for Nonlinear Structural Analysis, (1998)

[4]

Ning J.G., Ma T.B., Fei G.L., Multi-material Eulerian method and parallel computation for 3D explosion and impact problems, Int J Comp Meth-Sing, 11, (2014)

[5]

Amsden A.A., Particle-in-cell Method for the Calculation of the Dynamics of Compressible Fluids, (1966)

[6]

Harlow F.H., Welch J.E., Numerical calculation of time-dependent viscous incompressible flow of fluid with free surface, Phys Fluids, 8, (1965)

[7]

Youngs D.L., Time-dependent multi-material flow with large fluid distortion, Numerical Methods for Fluid Dynamics, pp. 273-285, (1982)

[8]

Enright D., Fedkiw R., Ferziger J., Et al., A hybrid particle level set method for improved interface capturing, J Comput Phys, 183, pp. 83-116, (2002)

[9]

Zhang X., Sze K.Y., Ma S., An explicit material point finite element method for hyper-velocity impact, Int J Numer Meth Eng, 66, pp. 689-706, (2006)

[10]

Ma T.B., Wang J., Ning J.G., A hybrid VOF and PIC multi-material interface treatment method and its application in the penetration, Sci China-Phys Mech Astron, 53, pp. 209-217, (2010)

← 1 2 →