Brittle failure kinetics model for concrete
- Sandia National Labs., Albuquerque, NM (United States). Computational Physics and Mechanics Dept.
A new constitutive model is proposed for the modeling of penetration and large stress waves in concrete. Rate effects are incorporated explicitly into the damage evolution law, hence the term brittle failure kinetics. The damage variable parameterizes a family of Mohr-Coulomb strength curves. The model, which has been implemented in the CTH code, has been shown to reproduce some distinctive phenomena that occur in penetration of concrete targets. Among these are the sharp spike in deceleration of a rigid penetrator immediately after impact. Another is the size scale effect, which leads to a nonlinear scaling of penetration depth with penetrator size. This paper discusses the theory of the model and some results of an extensive validation effort.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 486157
- Report Number(s):
- SAND-97-0439C; CONF-970726-7; ON: DE97003836; TRN: AHC29713%%104
- Resource Relation:
- Conference: American Society of Mechanical Engineers (ASME) pressure vessel and piping conference, Orlando, FL (United States), 27 Jul - 1 Aug 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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