Modeling of Blast-Induced Craters by Multi-Material ALE Method

Article Preview

Abstract:

Multi-material ALE method combines the advantages of Lagrangian and Eulerian methods, avoids mesh distortion of the Lagrangian method, and eliminates moving boundary problems of the Euler method. A numerical simulation of blast-induced craters in geotechnical medium was performed within the frame of LS-DYNA by multi-material ALE method. The simulated crater which coincides with the empirical data from CONWEP was observed in post processing by the flow of material. This demonstrates that the multi-material ALE method is an effective way to simulate blast-induced craters in geotechnical medium.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

771-774

Citation:

Online since:

August 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Schmidt, R. M and K.A. Holsapple, 1980. Theory and Experiments on Centrifuge Cratering, Journal of Geophysical Research. 85, 235-252.

DOI: 10.1029/jb085ib01p00235

Google Scholar

[2] Zhi-Liang Wang, Yong-Chi Li, R.F. Shen, Numerical simulation of tensile damage and blast crater in brittle rock due to underground explosion[J]. International Journal of Rock Mechanics & Mining Sciences. 44(2007)730–738.

DOI: 10.1016/j.ijrmms.2006.11.004

Google Scholar

[3] Yang Xiumin, Jin Yiliang, Liu Dianzhong. THEORETICAL ANALYSIS OF CRATER CHARACTERISTICS OF CONCENTRATED CHARGE EXPLOSION IN SOIL[J]. EXPLOSION AND SHOCK WAVES, 1984, 4(1): 48-55. (In Chinese).

Google Scholar

[4] LIU Hong-yan, YANG Jun, CHEN Peng-wan, SIMULATION OF THE PROCESS OF EXPLOSION FUNNEL FORMULATION BY MEANS OF DISCONTINUOUS DEFORMATION ANALYSIS[J]. ENGINEERING BLASTING. 2004, 10(2): 17-20. (In Chinese).

Google Scholar

[5] I.S. SANDLER AND D. RUBIN. AN ALGORITHM AND A MODULAR SUBROUTINE FOR THE CAP MODEL[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS. VOL 3. 173-186, (1979).

DOI: 10.1002/nag.1610030206

Google Scholar

[6] LS-DYNA KEY WORD USERS'MENUAL (Version 971/Release 4)[M]. Livermore Software Technology Corporation. 2009: 15. 9(EOS)- 15. 10(EOS), 585(MAT)-587(MAT).

Google Scholar

[7] Wang J. Simulation of landmine explosion using LS-DYNA3D software: Benchmark Work of Simulation of Explosion in Soil and Air [C]. Weapons Systems Division. Aeronautical and Maritime Research Laboratory, DSTO-TR-1 168.

Google Scholar