| STUDY ON TENSILE FAILURE MECHANISM AND HYBRID EFFECT OF INTRAPLY HYBRID COMPOSITES |
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| 作者姓名： | Zeng Qingdun Lin Xuehui |
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| 作者单位： | College of Traffic and Communications，South China University of Technology，Guangzhou 510640，China |
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| 基金项目： | Project supported by the Natural Science Foundation of Guangdong Province(No.000391) |
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| 摘 要： | The random critical-core model is adapted to investigate the tensile failure mech-anism and hybrid effect of unidirectionally arrayed hybrid composites with alternating low andhigh elongation fibers.By utilizing the model in conjunction with the results of the stress con-centration analysis in which the interfacial damage between fiber and matrix is considered,amicroscopic statistical analysis of both the first failure and ultimate failure of hybrids is per-formed.The variations of the first failure strain,the ultimate failure strain and the hybrid effectas the interfacial shear strength are obtained quantitatively.The concept of the hybrid effect forstrains has been clarified.The present results are compared with available experiment data anda reasonable agreement is found between the analytical predictions and the experimental results.
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STUDY ON TENSILE FAILURE MECHANISM AND HYBRID EFFECT OF INTRAPLY HYBRID COMPOSITES |
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| Zeng Qingdun Lin Xuehui.STUDY ON TENSILE FAILURE MECHANISM AND HYBRID EFFECT OF INTRAPLY HYBRID COMPOSITES[J].Acta Mechanica Solida Sinica,2003,16(1):33-40. |
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| Authors: | Zeng Qingdun Lin Xuehui |
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| Institution: | (1) College of Traffic and Communications, South China University of Technology, Guangzhou 510640, China, CN |
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| Abstract: | The random critical-core model is adapted to investigate the tensile failure mech- anism and hybrid effect of unidirectionally arrayed hybrid composites with alternating low and high elongation fibers.By utilizing the model in conjunction with the results of the stress con- centration analysis in which the interfacial damage between fiber and matrix is considered,a microscopic statistical analysis of both the first failure and ultimate failure of hybrids is per- formed.The variations of the first failure strain,the ultimate failure strain and the hybrid effect as the interfacial shear strength are obtained quantitatively.The concept of the hybrid effect for strains has been clarified.The present results are compared with available experiment data and a reasonable agreement is found between the analytical predictions and the experimental results. |
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| Keywords: | intraply hybrid composites failure statistical analysis hybrid effect |
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