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http://dx.doi.org/10.12652/Ksce.2010.30.3A.309

Application of Nonlocal Anisotropic Damage Model for the Reinforced Concrete Structures  

Woo, Sang Kyun (한국전력연구원 녹색성장연구소)
Kwon, Yong Gil (충북대학교 건설기술연구소)
Han, Sang Hoon (충북대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.3A, 2010 , pp. 309-316 More about this Journal
Abstract
This paper proposed a nonlocal anisotropic damage model to simulate the behavior of plain and reinforced concrete structures that are predominantly tensile and compressive load. This model based on continuum damage mechanics, used a symmetric second-order tensor as the damage variable. For quasi-brittle materials, such as concrete, the damage patterns were different in tension and in compression. These two damage states were modeled by damage evolution laws ensuring a damage tensor rate proportional to the total strain tensor in terms of principal components. To investigate the effectiveness of proposed model, the double edge notched specimen experimented by nooru-mohamed and reinforced concrete bending beam were analyzed using the implementation of the proposed model. As the results for the simulation, the nonlocal anisotropic damage model with an adequate control of rupture correctly represented the crack propagation for mixed mode fracture. In the structural failure of reinforced concrete bending beam, the proposed model can be showed up to a very high damage level and yielding of the reinforcements.
Keywords
nonlocal damage; anisotropic damage; mesh sensitivity; mesh objectivity; mixed mode;
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