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Tension-only or compression-only optimal stiffness design with displacement constraint is studied by a material-replacement method. In the method, the original tension-only or compression-only material is replaced with porous material which solid phase is isotropic and the modulus is equal to the tension modulus or compression one. When the material is replaced with isotropic, only approximate displacement...
The topology optimization of a structure with many subdomains is solved by a bionics approach, called as floating interval of reference strain energy density (SED). In practical engineering, a structure to be optimized may have many subdomains and each one is filled with a type of solid material as an initial design. To solve such kind of structural topology optimization, we present a heuristic approach...
The mesh dependency of plate topology optimization under uniform pressure is investigated. The plate is modelled as a three-dimensional (3D) solid structure now. Along the thickness multiple layer meshes are employed and the number of layers is different for different meshing cases. In finite element model (FEM), load is applied on nodes, therefore the change of the node number of the top layer of...
A new bionics approach called floating interval of reference strain energy density (FLIRSED) approach is presented to solve continuum structural topology optimization with displacement constraints. The major idea of the present method is to consider the structural topology optimization process as the bone remodelling process, which is controlled by a strain energy density (SED) dead zone (a reference...
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