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Information Journal Paper

Title

INFLUENCE OF PHYSICAL, THERMAL AND MECHANICAL PARAMETERS ON MICRO RESIDUAL STRESSES IN POLYMERIC COMPOSITES

Pages

  356-368

Abstract

 The effects of physical, THERMAL AND MECHANICAL PARAMETERS on curing micro-thermal RESIDUAL STRESSes are studied, based on the energy method, to present a theoretical solution for prediction of RESIDUAL STRESS fields. A finite element analysis is developed to compare the theoretical and numerical results together. There is found to be a good agreement between the results of the two methods. However, due to the edge effect, the finite element method is not able to satisfy the boundary conditions at the COMPOSITE ends. An increase in the fiber length leads to a significant increase in axial and shear stresses. In addition, for long fiber COMPOSITEs the axial and shear RESIDUAL STRESSes distribution become more uniform along the fiber length and suddenly decrease to zero at the COMPOSITE edge. The results of the two methods demonstrate that besides the physical characteristics of COMPOSITEs, the order of mismatch in thermal and mechanical properties of the fiber and matrix has a considerable influence on the axial and shear RESIDUAL STRESS fields. It must be noted that the radial stress distribution is approximately independent of these parameters and only its maximum value is changed at fiber end. The presented analytical solution not only satisfies all governing boundary conditions, but also yields the RESIDUAL STRESS fields according to COMPOSITE edge that significantly intensifies due to increasing the mismatch in thermal and elastic properties of the fiber and matrix. High mismatch in coefficient of the thermal expansion and Young's modulus of the fiber and matrix causes a substantial increase in the axial and shear stresses, while the difference between the Poisson's ratios of the COMPOSITE constituents has not any significant effect on the RESIDUAL STRESS field.

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  • Cite

    APA: Copy

    SHOKRIEH, MAMHMOOD M., & SAFARABADI, MAJID. (2012). INFLUENCE OF PHYSICAL, THERMAL AND MECHANICAL PARAMETERS ON MICRO RESIDUAL STRESSES IN POLYMERIC COMPOSITES. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 24(5 (ISSUE NUMBER 115)), 356-368. SID. https://sid.ir/paper/6319/en

    Vancouver: Copy

    SHOKRIEH MAMHMOOD M., SAFARABADI MAJID. INFLUENCE OF PHYSICAL, THERMAL AND MECHANICAL PARAMETERS ON MICRO RESIDUAL STRESSES IN POLYMERIC COMPOSITES. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2012;24(5 (ISSUE NUMBER 115)):356-368. Available from: https://sid.ir/paper/6319/en

    IEEE: Copy

    MAMHMOOD M. SHOKRIEH, and MAJID SAFARABADI, “INFLUENCE OF PHYSICAL, THERMAL AND MECHANICAL PARAMETERS ON MICRO RESIDUAL STRESSES IN POLYMERIC COMPOSITES,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 24, no. 5 (ISSUE NUMBER 115), pp. 356–368, 2012, [Online]. Available: https://sid.ir/paper/6319/en

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