Topology optimization of a transient thermo-mechanical problem using material penalization

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Abstract

Designing transient thermal mechanical systems is a challenging task. Material can have many different functions: it can provide heat capacity, heat conduction, mechanical stiffness or even function as an actuator. Topology optimization can provide the engineer with valuable insight on such a problem. One of the most popular topology optimization approaches is the density method. This method is applied to a transient thermal mechanical problem. In order to ensure manufacturability, penalization is applied to suppress intermediate densities in the final design. However, for transient thermal mechanical optimization problems, conventional penalization does not work for most objective functions. A new penalization method, material penalization, is presented that does suppress intermediate densities in the transient thermal mechanical domain. Each element is given its own unique set of penalization parameters which are optimized to maximize the objective function for a minimization problem. By reusing sensitivity information from the density variables, the additional computational cost is limited.
Original languageEnglish
Title of host publicationProceedings of the 11th World Congress of Structural and Multidisciplinary Optimization (WCSMO-11)
Subtitle of host publicationAdvances in Structural and Multidisciplinary Optimization
EditorsQing Li, Grant P. Steven, Zhongpu Zhang
PublisherUniversity of Sydney
Pages966-971
ISBN (Electronic)978-0-646-94394-7
Publication statusPublished - 2015
Event11th World Congress of Structural and Multidisciplinary Optimization: Advances in Structural and Multidisciplinary Optimization - Sydney, Australia
Duration: 7 Jun 201512 Jun 2015

Conference

Conference11th World Congress of Structural and Multidisciplinary Optimization
Abbreviated titleWCSMO-11
CountryAustralia
CitySydney
Period7/06/1512/06/15

Keywords

  • Topology optimization
  • Penalization
  • Manufacturability
  • Transient thermo-mechanical

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