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Title: Brittle failure kinetics model for concrete

Abstract

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.

Authors:
 [1]
  1. Sandia National Labs., Albuquerque, NM (United States). Computational Physics and Mechanics Dept.
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
OSTI Identifier:
486157
Report Number(s):
SAND-97-0439C; CONF-970726-7
ON: DE97003836; TRN: AHC29713%%104
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
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
Subject:
36 MATERIALS SCIENCE; IMPACT STRENGTH; CONCRETES; MATHEMATICAL MODELS; FAILURES; IMPACT SHOCK; PENETRATORS; THEORETICAL DATA

Citation Formats

Silling, S A. Brittle failure kinetics model for concrete. United States: N. p., 1997. Web. doi:10.2172/486157.
Silling, S A. Brittle failure kinetics model for concrete. United States. https://doi.org/10.2172/486157
Silling, S A. 1997. "Brittle failure kinetics model for concrete". United States. https://doi.org/10.2172/486157. https://www.osti.gov/servlets/purl/486157.
@article{osti_486157,
title = {Brittle failure kinetics model for concrete},
author = {Silling, S A},
abstractNote = {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.},
doi = {10.2172/486157},
url = {https://www.osti.gov/biblio/486157}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 1997},
month = {Sat Mar 01 00:00:00 EST 1997}
}