Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate

被引：43

作者：

Wang, Zhi-liang ^{[1
]}

Li, Yong-chi ^{[1
]}

Wang, J. G. ^{[2
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Mech, Hefei 230027, Peoples R China

[2] Natl Univ Singapore, Ctr Protect Technol, Singapore 119260, Singapore

来源：

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES | 2008年 / 45卷 / 04期

关键词：

rock plate; contact explosion; 1-D strain wave; finite difference method; damage model; erosion technique; spalling damage;

D O I：

10.1016/j.ijrmms.2007.08.002

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

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. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：600 / 608

页数：9

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