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Configuration optimization for thin structures using level set method

Jang, Gang-Won, Kambampati, Sandilya, Chung, Hayoung and Kim, H. Alicia 2019. Configuration optimization for thin structures using level set method. Structural and Multidisciplinary Optimization 59 (6) , 1881. 10.1007/s00158-019-02246-2

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Abstract

Level set–based optimization for two-dimensional structural configurations with thin members is presented. A structural domain with thin thickness is defined as a narrow band region on the zero-level contour of the level set function. No additional constraints or penalty functional is required to enforce semi-uniformity in member thickness. Design velocity is calculated on the zero level set, not on domain boundaries, and extended to level set grids in the narrow band. For complicated structural layouts, multiple level set functions are employed. The effectiveness of the proposed method is verified by solving optimization problems of bar configurations. Since no thickness constraints are employed, structurally unfavorable distorted joints seen in other literature do not appear in the results.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: Springer Verlag (Germany)
ISSN: 1615-147X
Date of Acceptance: 22 February 2019
Last Modified: 28 May 2019 09:45
URI: http://orca.cf.ac.uk/id/eprint/122861

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