Generating optimal topologies in structural design using a homogenization method
Computer Methods in Applied Mechanics and Engineering
Design of object oriented finite element code
Advances in Engineering Software
SIAM Journal on Optimization
Optimum structure with homogeneous optimum truss-like material
Computers and Structures
Strength optimized designs of thermoelastic structures
Structural and Multidisciplinary Optimization
Topology optimization involving thermo-elastic stress loads
Structural and Multidisciplinary Optimization
On reducing computational effort in topology optimization: how far can we go?
Structural and Multidisciplinary Optimization
Convergence of topological patterns of optimal periodic structures under multiple scales
Structural and Multidisciplinary Optimization
Concurrent topology optimization of structures and their composite microstructures
Computers and Structures
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The present paper studies multi-objective design of lightweight thermoelastic structure composed of homogeneous porous material. The concurrent optimization model is applied to design the topologies of light weight structures and of the material microstructure. The multi-objective optimization formulation attempts to find minimum structural compliance under only mechanical loads and minimum thermal expansion of the surfaces we are interested in under only thermo loads. The proposed optimization model is applied to a sandwich elliptically curved shell structure, an axisymmetric structure and a 3D structure. The advantage of the concurrent optimization model to single scale topology optimization model in improving the multi-objective performances of the thermoelastic structures is investigated. The influences of available material volume fraction and weighting coefficients are also discussed. Numerical examples demonstrate that the porous material is conducive to enhance the multi-objective performance of the thermoelastic structures in some cases, especially when lightweight structure is emphasized. An "optimal" material volume fraction is observed in some numerical examples.