This paper proposes a novel integrated design strategy to accomplish simultaneous topology shape and sizing optimisation of a twodimensional
(2D) truss. An optimisation problem is posed to find a structural topology, shape, and element sizes of the truss such
that two objective functions, mass and compliance, are minimised.Design constraints include stress, buckling, and compliance.The
procedure for an adaptive ground elements approach is proposed and its encoding/decoding process is detailed. Two sets of design
variables defining truss layout, shape, and element sizes at the same time are applied. A number of multiobjective evolutionary
algorithms (MOEAs) are implemented to solve the design problem. Comparative performance based on a hypervolume indicator
shows that multiobjective population-based incremental learning (PBIL) is the best performer. Optimising three design variable
types simultaneously is more efficient and effective.
This paper proposes a novel integrated design strategy to accomplish simultaneous topology shape and sizing optimisation of a twodimensional(2D) truss. An optimisation problem is posed to find a structural topology, shape, and element sizes of the truss suchthat two objective functions, mass and compliance, are minimised.Design constraints include stress, buckling, and compliance.Theprocedure for an adaptive ground elements approach is proposed and its encoding/decoding process is detailed. Two sets of designvariables defining truss layout, shape, and element sizes at the same time are applied. A number of multiobjective evolutionaryalgorithms (MOEAs) are implemented to solve the design problem. Comparative performance based on a hypervolume indicatorshows that multiobjective population-based incremental learning (PBIL) is the best performer. Optimising three design variabletypes simultaneously is more efficient and effective.
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