Journal
COMPUTERS & STRUCTURES
Volume 88, Issue 1-2, Pages 120-133Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2009.07.006
Keywords
Topology optimization; Internal element connectivity parameterization method; Modal analysis; Nonlinear structure
Funding
- Korean Ministry of Education, Science and Technology
- Kyungpook National University
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This paper pertains to the use of topology optimization based on the internal element connectivity parameterization (I-ECP) method for nonlinear dynamic problems. When standard density-based topology optimization methods are used for nonlinear dynamic problems, they typically suffer from two main numerical difficulties, element instability and localized vibration modes. As an alterative approach, the I-ECP method is employed to avoid element instability and a new patch mass model in the I-ECP formulation is developed to control the problem of localized vibration modes. After the I-ECP based formulation is developed. the advantages of the proposed method are checked with several numerical examples. (C) 2009 Elsevier Ltd. All rights reserved.
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