Implementation of the Nonlocal Microplane Concrete Model Within an Explicit Dynamic Finite Element Program

[+] Author and Article Information
William F. Cofer

Department of Civil and Environmental Engineering, Washington State University, Pullman WA 99164-2910

Appl. Mech. Rev 45(3S), S132-S139 (Mar 01, 1992) doi:10.1115/1.3121383 History: Online April 30, 2009


The microplane concrete material model is based upon assumptions regarding the behavior of the material components. At any point, the response to the strain tensor on arbitrarily oriented surfaces is considered. Simple, softening stress-strain relationships are assumed in directions perpendicular and parallel to the surfaces. The macroscopic material behavior is then composed of the sum of the effects. The implementation of this model into the explicit, nonlinear, dynamic finite element program, DYNA3D, is described. To avoid the spurious mesh sensitivity that accompanies material failure, a weighted integral strain averaging approach is used to ensure that softening is nonlocal. This method is shown to be effective for limiting the failure zone in a concrete rod subjected to an impulse loading.

Copyright © 1992 by American Society of Mechanical Engineers
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