Finite Element Model Based on Shear-Lag Theory for Prediction of Creep Stress in Al/Sic Composite

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MOKHTARI P.; Mohammadpour Fattahi A.

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Journal: Modares Mechanical Engineering Year:2020 | Volume:20 | Issue:2 Page(s): 279-286

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Title

Finite Element Model Based on Shear-Lag Theory for Prediction of Creep Stress in Al/Sic Composite

Author(s)

MOKHTARI P. | Mohammadpour Fattahi A. | Issue Writer Certificate

Keywords

Shear-LagQ1

Finite ElementQ2

CreepQ2

Al/Sic CompositeQ1

Abstract

In the present study, the Finite Element method based on the Shear-Lag model was used for stress analysis as well as deformation of the Creep stable state of short fiber composites under axial loading. A perfect fiber/matrix interface is assumed and the steady-state Creep behavior of the matrix is described by Norton numerical model. Special boundary conditions applied to the unit cell model and imaginary fiber technique has been used. Then ANSYS software is used for the calculation of all stresses and strains at the fiber/matrix interface and the outer surface of the unit cell. Then the results were verified and the values of axial and shear stresses at different points of the composite were investigated. The results show that the composite unit cell can be used as a composite representative for stress analysis. Also, the use of an imaginary fiber technique is a useful and reliable way to achieve a stress transfer model. This Model has sufficient accuracy and contrary to previous studies can predict all stresses and strains in all points.

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APA: Copy

MOKHTARI, P., & Mohammadpour Fattahi, A.. (2020). Finite Element Model Based on Shear-Lag Theory for Prediction of Creep Stress in Al/Sic Composite. MODARES MECHANICAL ENGINEERING, 20(2 ), 279-286. SID. https://sid.ir/paper/178277/en

Vancouver: Copy

MOKHTARI P., Mohammadpour Fattahi A.. Finite Element Model Based on Shear-Lag Theory for Prediction of Creep Stress in Al/Sic Composite. MODARES MECHANICAL ENGINEERING[Internet]. 2020;20(2 ):279-286. Available from: https://sid.ir/paper/178277/en

IEEE: Copy

P. MOKHTARI, and A. Mohammadpour Fattahi, “Finite Element Model Based on Shear-Lag Theory for Prediction of Creep Stress in Al/Sic Composite,” MODARES MECHANICAL ENGINEERING, vol. 20, no. 2 , pp. 279–286, 2020, [Online]. Available: https://sid.ir/paper/178277/en

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