Fatigue Strain based Approach for Damage Evolution Model of Concrete
Keywords:
fatigue strain based approach; damage; evolution model; concrete fatigue modulus; thermodynamics; fatigue modulus; inelastic, strength reduction
Abstract
Fatigue Strain-based Approach to the Damage evolution Modeling plays a very important role in the evaluation of the material properties of concrete utilizing strain analysis methods the nonlinear fatigue strain evolution model is proposed evolution model of fatigue modulus is established and the hypothesis of fatigue modulus inversely related fatigue strain amplitude causes formation of cracks and microcracks anisotropic in nature damage the chemistry and orientation of composed structural elements of concrete materials resulting reduction in stiffness and inelastic deformations This paper presents Fatigue Strain and Damage evolution Model of concrete developed in strain life approach by using damage principle of continuum thermodynamics Due to the formation of nucleation and microcracks by continuous fatigue loading and unloading result in stiffness reduction and inelastic deformation and hence the phenomenon is termed as damaged The fatigue strain fatigue modulus evolution curves have three stages namely variation phase linear change stage and convergence stage
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Published
2019-01-15
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