Topic
Micromechanics
About: Micromechanics is a research topic. Over the lifetime, 6000 publications have been published within this topic receiving 162635 citations.
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TL;DR: In this paper, a micromechanical damage model considering progressive partial debonding is presented to investigate the effective elastoplastic-damage behavior of partially debonded particle reinforced ductile matrix composites (PRDMCs).
96 citations
TL;DR: In this paper, the problem of material/hole design for maximum bulk modulus is analyzed and a simple optimality criterion is derived and with a simple superelliptic parametrization, agreement with Hashin-Shtrikman bounds are found.
Abstract: In the micromechanics design of materials, as well as in the design of structural connections, the boundary shape plays an important role. The objective may be the stiffest design, the strongest design or just a design of uniform energy density along the shape. In an energy formulation it is proven that these three objectives have the same solution, at least within the limits of geometrical constraints, including the parametrization. Without involving stress/strain fields, the proof holds for 3D-problems, for power-law nonlinear elasticity and for anisotropic elasticity.¶To clarify the importance of parametrization, the problem of material/hole design for maximum bulk modulus is analysed. A simple optimality criterion is derived and with a simple superelliptic parametrization, agreement with Hashin-Shtrikman bounds are found. More general examples including nonequal principal strains, nonlinear elasticity and orthotropic elasticity show the versatility of the optimality criterion approach. In spite of this, the mathematical programming approach will be used in the future study of the multiparameter and/or multipurpose problems.
96 citations
TL;DR: In this paper, a model is presented of a particulate composite containing spherical inclusions, each of which is surrounded by a localized region in which the elastic moduli vary smoothly with radius.
96 citations
TL;DR: In this article, the micromechanics of fiber composite columns under compression were investigated theoretically and the model was based on the assumption that the fiber buckles inside the matrix.
Abstract: The micromechanics of fiber composite columns under compression is investigated theoretically. The model is based on the assumption that the fiber buckles inside the matrix. In the postbuckling ran...
95 citations
TL;DR: In this article, a strain invariant failure theory (SIFT) was used to model the impact of fiber-reinforced composite laminates on the effective nodal forces of a finite element.
95 citations