Tensile Fracture Mechanism of Claviform Hybrid Composite Rebar
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第3期
论文作者：蔡禄荣
文章页码：501 - 506
摘 要：Based on the shear-lag theory, a hexagonal model of fiber bundles was established to study the tensile fracture mechanism of a claviform hybrid composite rebar. Firstly, the stress redistributions are investigated on two conditions: one condition is that interfacial damage is taken into account and the other is not. Then, a micro-statistical analysis of the multiple tensile failures of the rebar was performed by using the random critical-core theory. The results indicate that the predictions of the tensile failure strains of the rebar, in which the interfacial damage is taken into account, are in better agreement with the existing experimental results than those when only elastic case is considered. Through the comparison between the theoretical and experimental results, the shear-lag theory and the model are verified feasibly in studying the claviform hybrid composite rebar.
蔡禄荣
School of Civil Engineering and Transportation, South China University of Technology
摘 要：Based on the shear-lag theory, a hexagonal model of fiber bundles was established to study the tensile fracture mechanism of a claviform hybrid composite rebar. Firstly, the stress redistributions are investigated on two conditions: one condition is that interfacial damage is taken into account and the other is not. Then, a micro-statistical analysis of the multiple tensile failures of the rebar was performed by using the random critical-core theory. The results indicate that the predictions of the tensile failure strains of the rebar, in which the interfacial damage is taken into account, are in better agreement with the existing experimental results than those when only elastic case is considered. Through the comparison between the theoretical and experimental results, the shear-lag theory and the model are verified feasibly in studying the claviform hybrid composite rebar.
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