Abstract
Compliance minimization has been popular for obtaining optimum truss topologies because it is less computationally demanding than optimization for more general constraints. This advantage of compliance minimization led to the approach of optimizing the topology of the truss for minimum compliance, and then sizing the cross-sectional areas of that truss for the actual constraints. The present paper shows that the compliance minimization can occasionally lead to the wrong topology, and that the penalty associated with using the minimum-compliance topology can be substantial. To demonstrate this problem truss topology optimization subject to displacement and stress constraints is performed with a simultaneous analysis and design (SAND) procedure.
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