Randomly oriented short fiber reinforced ply strength predictions

The laminate analogy is once again used. Because the ply is assumed to be isotropic both in stiffness and in the strength, the number of strength properties to predict is reduced to three: strength in tension, in compression, and in shear.

To obtain the strength in tension, a unit tensile load Nx is applied to the laminate and the failure index corresponding to the maximum strain failure criterion is calculated for each ply. The maximum failure index is retained and used to calculate the factor by which the Nx loading should be multiplied to produce failure. The resulting scaled loading is finally divided by the thickness of the reinforced ply to obtain XT. An identical procedure is adopted to obtain the strength in compression and in shear.

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Randomly oriented short fiber reinforced ply strength predictions, Simcenter 3D 2021.1 Series

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