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Title: Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate
Authors: Wang, Z.-L.
Li, Y.-C.
Wang, J.G. 
Keywords: 1-D strain wave
Contact explosion
Damage model
Erosion technique
Finite difference method
Rock plate
Spalling damage
Issue Date: Jun-2008
Citation: Wang, Z.-L., Li, Y.-C., Wang, J.G. (2008-06). Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate. International Journal of Rock Mechanics and Mining Sciences 45 (4) : 600-608. ScholarBank@NUS Repository.
Abstract: The paper focuses on the numerical analysis of blast-induced stress wave propagation and related spalling damage in a rock plate or wall. Firstly, a large-scale contact explosion is simplified as a one-dimensional (1-D) strain problem, and a cross-format centered finite-difference scheme is presented. Secondly, the finite-difference code is used to explore the wave propagation in a rock plate, and compared with the commercial software LS-DYNA. Thirdly, a continuum damage constitutive model for rock is introduced and successfully incorporated into the LS-DYNA through its user-defined subroutine. Coupling with the erosion technique, the improved LS-DYNA is used to simulate the blast-induced spalling damage at the back-side of rock plate. Numerical results show that the 1-D finite difference code is convenient and accurate. Also, the user-defined subroutine can well describe the process of spalling damage. © 2007 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Rock Mechanics and Mining Sciences
ISSN: 13651609
DOI: 10.1016/j.ijrmms.2007.08.002
Appears in Collections:Staff Publications

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