Exploiting group symmetry in truss topology optimization

Y.Q. Bai, E. de Klerk, D.V. Pasechnik, R. Sotirov

Research output: Contribution to journalArticleScientificpeer-review

35 Citations (Scopus)


We consider semidefinite programming (SDP) formulations of certain truss topology optimization problems, where a lower bound is imposed on the fundamental frequency of vibration of the truss structure. These SDP formulations were introduced in Ohsaki et al. (Comp. Meth. Appl. Mech. Eng. 180:203–217, 1999). We show how one may automatically obtain symmetric designs, by eliminating the ‘redundant’ symmetry in the SDP problem formulation. This has the advantage that the original SDP problem is substantially reduced in size for trusses with large symmetry groups.
Original languageEnglish
Pages (from-to)331-349
JournalOptimization and Engineering
Issue number3
Publication statusPublished - 2009


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