Tuning material’s elastic properties to mitigate stress concentrations at holes

Having in mind the tremendous literature on functionally graded plates, those endowed with a circular hole whose stiffness varies linearly in axisymmetric fashion were not seemingly considered before. Interestingly, it was found that there exists a slope beyond which the stress concentration due to far-field uni-axial traction loads (i) does not occur at the rim of the hole and (ii) increases very marginally.


H.M.A. Abdalla, D. Casagrande, F. De Bona. Analysis of Stress Concentration in Functionally Graded Plates with Linearly Increasing Young’s Modulus. (2023) Materials. DOI: 10.1016/j.ijfatigue.2023.107665


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