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A material optimization model to approximate energy bounds for cellular materials under multiload conditions. (English) Zbl 1243.74139
Summary: This paper describes a computational model, based on inverse homogenization and topology design, for approximating energy bounds for two-phase composites under multiple load cases. The approach allows for the identification of possible single-scale cellular materials that give rise to the optimal bounds within this class of composites. A comparison of the computational results with the globally optimal bounds given via rank-N layered composites illustrates the behaviour for tension and shear load situations, as well as the importance of considering the shape of the basic unit cell as part of the design process.
MSC:
74P05Compliance or weight optimization (solid mechanics)
74Q05Homogenization in equilibrium problems (solid mechanics)