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Computers and Concrete Volume 5, Number 3, June 2008 , pages 195-216 DOI: https://doi.org/10.12989/cac.2008.5.3.195 |
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Hypoelastic modeling of reinforced concrete walls |
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Mohsen A. Shayanfar and Amir Safiey
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| Abstract | ||
| This paper presents a new hypoelasticity model which was implemented in a nonlinear finite element formulation to analyze reinforced concrete (RC) structures. The model includes a new hypoelasticity constitutive relationship utilizing the rotation of material axis through successive iterations. The model can account for high nonlinearity of the stress-strain behavior of the concrete in the pre-peak regime, the softening behavior of the concrete in the post-peak regime and the irrecoverable volume dilatation at high levels of compressive load. This research introduces the modified version of the common application orthotropic stress-strain relation developed by Darwin and Pecknold. It is endeavored not to violate the principal of \"simplicity\" by improvement of the \"capability\" The results of analyses of experimental reinforced concrete walls are presented to confirm the abilities of the proposed relationships. | ||
| Key Words | ||
| cracking; damage; smeared crack model; hypoelasticity; strength degradation; shear wall. | ||
| Address | ||
| Mohsen A. Shayanfar; Civil Engineering Department, Iran Univ. of Science and Technology, Narmak 16846, Tehran, Iran Amir Safiey; Moshanir Power Engineering Consultants, Park Prince Buildings, Vanak, Tehran, Iran | ||