Efficient reanalysis techniques for robust topology optimization

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Efficient reanalysis techniques for robust topology optimization. / Amir, Oded; Sigmund, Ole; Lazarov, Boyan Stefanov; Schevenels, Mattias.

In: Computer Methods in Applied Mechanics and Engineering, Vol. 245-246, 2012, p. 217-231.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Amir, Oded; Sigmund, Ole; Lazarov, Boyan Stefanov; Schevenels, Mattias / Efficient reanalysis techniques for robust topology optimization.

In: Computer Methods in Applied Mechanics and Engineering, Vol. 245-246, 2012, p. 217-231.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{86b0876822494b31b801ca844baf5b01,
title = "Efficient reanalysis techniques for robust topology optimization",
keywords = "Topology optimization, Robust design, Manufacturing errors, Approximate reanalysis",
publisher = "Elsevier BV",
author = "Oded Amir and Ole Sigmund and Lazarov, {Boyan Stefanov} and Mattias Schevenels",
year = "2012",
doi = "10.1016/j.cma.2012.07.008",
volume = "245-246",
pages = "217--231",
journal = "Computer Methods in Applied Mechanics and Engineering",
issn = "0045-7825",

}

RIS

TY - JOUR

T1 - Efficient reanalysis techniques for robust topology optimization

A1 - Amir,Oded

A1 - Sigmund,Ole

A1 - Lazarov,Boyan Stefanov

A1 - Schevenels,Mattias

AU - Amir,Oded

AU - Sigmund,Ole

AU - Lazarov,Boyan Stefanov

AU - Schevenels,Mattias

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - The article focuses on the reduction of the computational effort involved in robust topology optimization procedures. The performance of structures designed by means of topology optimization may be seriously degraded due to fabrication errors. Robust formulations of the optimization problem were shown to yield optimized designs that are tolerant with respect to such manufacturing uncertainties. The main drawback of such procedures is the added computational cost associated with the need to evaluate a set of designs by performing multiple finite element analyses. In this article, we propose efficient robust topology optimization procedures based on reanalysis techniques. The approach is demonstrated on two compliant mechanism design problems where robust design is achieved by employing either a worst case formulation or a stochastic formulation. It is shown that the time spent on finite element analysis within robust topology optimization can be reduced significantly, without affecting the outcome of the optimization process.

AB - The article focuses on the reduction of the computational effort involved in robust topology optimization procedures. The performance of structures designed by means of topology optimization may be seriously degraded due to fabrication errors. Robust formulations of the optimization problem were shown to yield optimized designs that are tolerant with respect to such manufacturing uncertainties. The main drawback of such procedures is the added computational cost associated with the need to evaluate a set of designs by performing multiple finite element analyses. In this article, we propose efficient robust topology optimization procedures based on reanalysis techniques. The approach is demonstrated on two compliant mechanism design problems where robust design is achieved by employing either a worst case formulation or a stochastic formulation. It is shown that the time spent on finite element analysis within robust topology optimization can be reduced significantly, without affecting the outcome of the optimization process.

KW - Topology optimization

KW - Robust design

KW - Manufacturing errors

KW - Approximate reanalysis

U2 - 10.1016/j.cma.2012.07.008

DO - 10.1016/j.cma.2012.07.008

JO - Computer Methods in Applied Mechanics and Engineering

JF - Computer Methods in Applied Mechanics and Engineering

SN - 0045-7825

VL - 245-246

SP - 217

EP - 231

ER -