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What is topology optimization?
Topology optimization is a structural design optimization technique for distributing material efficiently across the design domain by changing the topology of the design for a given set of loading and boundary conditions such that, the resulting design has better performance targets in terms of improved stiffness, and reduced mass.
How is it topology optimization different from sizing and shape optimization?
In a sizing optimization problem, the design variables are usually geometrical parameters such as length, width or thickness of the part being optimized.