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An Evaluation Study of Modified Mohr-Coulomb and Cap Models

by Hamdan N. Al-Ghamedy, King Fahd Univ of Petroleum &, Minerals, Dhahran, Saudi Arabia,
Sahel N. Abduljauwad, King Fahd Univ of Petroleum &, Minerals, Dhahran, Saudi Arabia,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

Two failure criteria, namely Mohr-Coulomb and cap models, are considered in this paper with some modifications. Mohr-Coulomb theory is applied to concrete after stress and strain cut-offs are made. The classical cap model is extended by incorporating the third stress invariant and combined hardening. The two criteria are formulated and incorporated into a nonlinear finite element program. Several examples are presented, and the results are compared with experimental data.

Subject Headings: Finite element method | Failure analysis | Mathematical models | Stress analysis | Data analysis | Triaxial tests | Stress strain relations

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