Failure analysis of unidirectional polymeric matrix composites with two serial pin loaded-holes

Attar, Mohammad Mahdi; Barati, Farzan; Ahmadpour, Mohammad; Rezapour, Ehsan

doi:10.1007/s12206-016-0519-5

Cited by 11 publications

(1 citation statement)

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“…Also, the influence of fiber arrangement on displacement and stress distribution was investigated. Using micromechanical analysis based on shear-lag theory and experimental tests, failure modes of two serials pin-loaded joint of unidirectional laminated PMC was investigated by Attar et al 10 Another study about micromechanical modeling of unidirectional laminated composite based on shear-lag theory can be referred to the work of Barati et al, 11 in which the load transfer mechanism in PMC fiber-reinforced with triangular cross-section was studied.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical approach to viscoelastic stress analysis of a pin-loaded hole in unidirectional laminated PMC

Reza

Shishesaz

Sedighi

2021

Polymers and Polymer Composites

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This paper aims to investigate the effect of viscoelastic behavior of polymer matrix of unidirectional fiber-reinforced laminated composite on stress distribution around the pin-loaded hole under tensile loading. The Laplace transform is used to prevent the integral form of matrix governing stress-strain relation. Applying a micromechanical model, all equilibrium equations for the fibers are written analytically in the Laplace domain. The numerical algorithm of Gaver–Stehfest is implemented, and the governing equations were solved at any given time to extract the concerned results in the time domain. The obtained results are validated against the Finite Element Method results obtained through ANSYS software. Moreover, a comparison of the results of this study at the time equal zero with elastic solutions of other references showed a good agreement. The results revealed that in the long term, the maximum tensile load in the intact fiber around the pinhole was enlarged and the tensile load in fibers far from the pinhole slightly was decreased. Moreover, the location of the maximum axial load that had occurred on pinhole edges was moved slightly toward the center over time.

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Section: Introductionmentioning

confidence: 99%