期刊
THEORETICAL AND APPLIED FRACTURE MECHANICS
卷 52, 期 2, 页码 111-116出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2009.08.005
关键词
Steel fiber reinforced concrete; Volume fraction; Constitutive model; Erosion criterion; Crater blasting
资金
- Civil Aeronautics joint Research Foundation
- New Century Excellent Talents in University [NCET-08-0525]
- Specialized Research Fund for the Doctoral Program of Higher Education [20070358073]
- Talent Introduction Foundation of Tongii University
This paper presents a numerical analysis of crater blasting in steel fiber reinforced concrete (SFRC). In order to model the nonlinear damage-softening behavior of SFRC, the effective stress and effective plastic strain curve is tabulated and used as input for the material Type10 (MAT-ELASTIC-PLASTIC-HYDRO) available in LS-DYNA. The Gruneisen equation of state (EOS) is used to model the pressure volume relationship. With the two erosion criteria namely tensile cut-off and failure strain incorporated, the crater blasting in SFRC is simulated. Numerical results show that the adopted model and high-pressure EOS can well capture the main characteristics and failure process of SFRC under blast loading, and the related parameters can be determined conveniently. In addition, the volume fraction of fibers exerts a significant influence on the dimension of blast-induced crater. (C) 2009 Elsevier Ltd. All rights reserved.
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