Please use this identifier to cite or link to this item:
Publisher DOI: 10.1007/s00158-021-02969-1
Title: An empirical study on stress-based fail-safe topology optimization and multiple load path design
Language: English
Authors: Kranz, Micah 
Lüdeker, Julian Kajo 
Kriegesmann, Benedikt  
Keywords: Fail-safe design; Local volume constraint; Multiple load path; Stress-based topology optimization
Issue Date: 14-Aug-2021
Publisher: Springer
Source: Structural and Multidisciplinary Optimization 64 (4): 2113-2134 (2021-10-01)
Abstract (english): 
Explicitly considering fail-safety within design optimization is computationally very expensive, since every possible failure has to be considered. This requires solving one finite element model per failure and iteration. In topology optimization, one cannot identify potentially failing structural members at the beginning of the optimization. Hence, a generic failure shape is applied to every possible location inside the design domain. In the current paper, the maximum stress is considered as optimization objective to be minimized, since failure is typically driven by the occurring stresses and thus of more practical relevance than the compliance. Due to the local nature of stresses, it is presumed that the optimization is more sensitive to the choice of the failure shape than compliance-based optimization. Therefore, various failure shapes, sizes and different numbers of failure cases are investigated and compared on the basis of a general load-path-based evaluation scheme. Instead of explicitly considering fail-safety, redundant structures are obtained at much less computational cost by controlling the maximum length scale. A common and easy to implement maximum length scale approach is employed and fail-safe properties are determined and compared against the explicit fail-safe approach.
DOI: 10.15480/882.3841
ISSN: 1615-1488
Journal: Structural and multidisciplinary optimization 
Institute: Strukturoptimierung im Leichtbau M-EXK1 
Document Type: Article
Project: Topologieoptimierung unter Berücksichtigung von Ausfallsicherheit 
Projekt DEAL 
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
Kranz2021_Article_AnEmpiricalStudyOnStress-based.pdfVerlags-PDF8,62 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on May 29, 2023


checked on May 29, 2023


Last Week
Last month
checked on Jul 1, 2022

Google ScholarTM


Note about this record

Cite this record


This item is licensed under a Creative Commons License Creative Commons