Stress Concentration and Mechanical Strength of Cubic Lattice Architectures - Archive ouverte HAL
Article Dans Une Revue Materials Année : 2018

Stress Concentration and Mechanical Strength of Cubic Lattice Architectures

Résumé

The continuous design of cubic lattice architecture materials provides a wide range of mechanical properties. It makes possible to control the stress magnitude and the local maxima in the structure. This study reveals some architectures specifically designed to reach a good compromise between mass reduction and mechanical strength. Decreased local stress concentrationprevents the early occurrence of localized plasticity or damage, and promotes the fatigue resistance.The high performance of cubic architectures is reported extensively, and structures with the best damage resistance are identified. The fatigue resistance and S–N curves (stress magnitude versus lifetime curves) can be estimated successfully, based on the investigation of the stress concentration. The output data are represented in two-dimensional (2D) color maps to help mechanical engineers in selecting the suitable architecture with the desired stress concentration factor, and eventually withthe correct fatigue lifetime.
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Dates et versions

hal-01943860 , version 1 (04-12-2018)

Identifiants

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Paul Lohmuller, Julien Favre, Boris Piotrowski, Samuel Kenzari, Pascal Laheurte. Stress Concentration and Mechanical Strength of Cubic Lattice Architectures. Materials, 2018, 11 (7), pp.1146. ⟨10.3390/ma11071146⟩. ⟨hal-01943860⟩
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