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发表时间：2009-01-01

发表刊物：力学学报

卷号：41

期号：1

页面范围：98-104

ISSN号：0459-1879

摘要：The topology optimization of continuum structures with self weight loads
   is investigated in this paper. Such difficulties as non-monotonous
   behavior of the compliance, inactive volume constraint of the optimal
   topology and the parasitic effect of low density regions are often
   arisen in topology optimization problems with self weight loads.
   Solution strategies based on the RAMP material model and the mean
   sensitivity filtering technique are proposed to get rid of the
   difficulties and MMA code is used to solve the optimization problem. The
   influence of penalty factors of the RAMP model on the optimal topology
   results is investigated. Research results show that the material
   resource constraint turn to active when the penalty factor is set to an
   appropriate d u e (for example, 20.0). In addition, compared with the
   sensitivity filtering suggested by Sigmund, discrete 0/1 design can be
   obtained by the mean sensitivity filtering technique.

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