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Structural and Multidisciplinary Optimization

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05.11.2015 | RESEARCH PAPER

An algorithm for eradicating the effects of void elements on structural topology optimization for nonlinear compliance

verfasst von: Quantian Luo, Liyong Tong

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 4/2016

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Abstract

This paper presents an efficient algorithm for structural topology optimization with material and/or geometric nonlinearities using the moving iso-surface threshold (MIST) method. In this algorithm, all finite element analyses (FEA) are conducted for sub-domains with solid and grey elements via removing all void elements, whereas the response function is constructed in the full design domain. This algorithm allows the removed void elements to be involved in design variable update and to reappear in subsequent iterations. As there are solid materials only in the final optimal topology, problems such as ‘layering’ and ‘islanding’ caused by void elements in topology optimization for structures considering large deformations are completely eradicated. Challenges such as ‘material reappearance’ and ‘discontinuity’ owing to the removal of void elements are resolved. Numerical results for three typical structures and their comparison with those in the literature are presented to validate the present algorithm.

Vorheriger Artikel Polygonal multiresolution topology optimization (PolyMTOP) for structural dynamics

Nächster Artikel Design of piezoelectric modal filters by simultaneously optimizing the structure layout and the electrode profile

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Titel: An algorithm for eradicating the effects of void elements on structural topology optimization for nonlinear compliance
verfasst von: Quantian Luo
Liyong Tong
Publikationsdatum: 05.11.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: Structural and Multidisciplinary Optimization / Ausgabe 4/2016
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI: https://doi.org/10.1007/s00158-015-1325-x

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