Structural optimization using adaptive level set method

Mingdong Zhou, Michael Yu Wang, Li Li

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Abstract

A novel structural optimization method that utilizes both explicit and implicit geometric representations is presented. In this method, an octree grid is adopted to accommodate the free structural interface of an implicit level set model and a corresponding 2-manifold triangle mesh model. Within each iteration of optimization, the interface is evolved implicitly by using a semi-Lagrange level set method, during which the signed distance field is evaluated directly and accurately from the current surface model other than interpolation. After that, another mesh model is extracted from the updated field and serves as the input of subsequent design process. This hybrid and adaptive representation scheme not only achieves "narrow band computation", but also facilitates the structural analysis by using a geometry-aware mesh-free approach. Moreover, a feature preserving and topological errorless mesh simplification algorithm can also be leveraged to enhance the computational efficiency. A three dimensional benchmark example is provided to demonstrate the capability and potential of this method.

Original languageEnglish
Title of host publicationASME/ISCIE 2012 International Symposium on Flexible Automation, ISFA 2012
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages1-7
Number of pages7
ISBN (Print)9780791845110
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventInternational Symposium on Flexible Automation 2012 - St. Louis, United States of America
Duration: 18 Jun 201220 Jun 2012

Conference

ConferenceInternational Symposium on Flexible Automation 2012
Abbreviated title ISFA 2012
Country/TerritoryUnited States of America
CitySt. Louis
Period18/06/1220/06/12

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