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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Comparative Study of Concrete Constitutive Models for Predicting Blast Response
Author(s): James W. Wesevich, David D. Bogosian, Barry L. Bingham, Johan Magnusson, and Alexander P. Christiansen
Publication: Special Publication
Appears on pages(s): 1-18
Keywords: concrete, constitutive, model, blast, deflection, slab, response, shock, tube, test
Abstract:The robustness of concrete constitutive material models in explicit finite element codes is typically measured by their ability to match peak dynamic and permanent displacements of a reinforced concrete specimen. In a series of recent shock tube experiments, reinforced concrete slabs were subjected to simulated blast loads. Applied pressure histories were recorded in these tests, as were peak and residual displacements. This paper evaluates the Concrete Damage Model (Material 72, Release 3) and the Continuous Surface Cap Model (Material 159) within LS-DYNA (Version 971), as well as the Applied Engineering Cap model (AEC-3I) in DYNA3D. The results indicate some variation in predicted damage and failure modes between the three material models, but overall, all three models produced satisfactory comparisons to the test with regard to peak positive deflection (i.e., within a factor of 2 of the measured response). A surprising outcome is that the inclusion of rate-dependent material properties actually increased the error in the predicted response. In terms of predicting crack patterns, the AEC-3I model appears to be preferable, whereas MAT72R3 is preferred for predicting peak deflection. Overall, MAT159 was the most consistent predictor and the least sensitive to variations in the rate dependent properties of concrete.
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