Theoretical foundations of sequential element rejections and admissions (SERA) methods and their computational implementation in topology optimization

George I.N. Rozvany, Osvaldo M. Querin

Research output: Contribution to conferencePaper

15 Citations (Scopus)

Abstract

The theoretical foundations of the heuristic topology optimization technique "Sequential Element Rejections and Admissions" (SERA) are examined. SERA has been publicized extensively, mostly under the term Evolutionary Structural Optimization (ESO). However, doubts about SERA's validity have been often expressed in the past. Zhou and Rozvany (2001) have shown that SERA may result in highly nonoptimal solutions in isolated cases. In this paper, the concept of Iteration-wise Optimal Element Change (IOEC) and the Fundamental Assumption of SERA are introduced and the (in)correctness of this supposition is evaluated on various examples experimentally. Finally methods of improving element rejection/admission criteria for SERA are investigated.

Original languageEnglish
Publication statusPublished - Jan 1 2002
Event9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization 2002 - Atlanta, GA, United States
Duration: Sep 4 2002Sep 6 2002

Other

Other9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization 2002
CountryUnited States
CityAtlanta, GA
Period9/4/029/6/02

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ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Rozvany, G. I. N., & Querin, O. M. (2002). Theoretical foundations of sequential element rejections and admissions (SERA) methods and their computational implementation in topology optimization. Paper presented at 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization 2002, Atlanta, GA, United States.