NDLI: Robust shape optimization of notches for fatigue-life extension

Content Provider	Springer Nature Link
Author	McDonald, M. Heller, M.
Copyright Year	2004
Abstract	An iterative 2D finite-element-based optimization procedure has been developed which incorporates robust design philosophies. This has been used to determine precise free-form shapes for a hole in a plate example, with the aim of maximizing its fatigue-life when exposed to varying load orientations. Past methods have typically considered only a single nominal load orientation, with empirical approaches to deal with the orientation variability, thus resulting in suboptimal solutions. Here a robust stress method is developed that produces a notch shape that minimizes the peak stress and renders it constant for a range of load orientations. Furthermore, a more sophisticated robust fatigue-damage optimization method is then developed to minimize the peak fatigue damage for a given stochastic distribution of load orientations. Fatigue calculations for an example problem with significant load orientation variation show that the robust optimization methods provide fatigue-life extensions 2 to 8 times better than past methods. It is anticipated that the implementation of robust optimal shapes in metallic components would result in greater fatigue-life extension.
Starting Page	55
Ending Page	68
Page Count	14
File Format	PDF
ISSN	1615147X
Journal	Structural and Multidisciplinary Optimization
Volume Number	28
Issue Number	1
e-ISSN	16151488
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-07-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	fatigue-life enhancement shape optimization stress concentration
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Computer Graphics and Computer-Aided Design Control and Systems Engineering Computer Science Applications Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Suggested benchmarks for shape optimization for minimum stress concentration

Optimal hole shape for minimum stress concentration using parameterized geometry models

Simultaneous shape and thickness optimization

Shape optimization of a flywheel

Adaptive FE-procedures in shape optimization

Fatigue constrained topology optimization

Shape optimization of a bow

Robust shape control of beams with load uncertainties by optimally placed piezo actuators

An integrated approach to topology, sizing, and shape optimization

Robust shape optimization of notches for fatigue-life extension

Similar Documents

Suggested benchmarks for shape optimization for minimum stress concentration

Optimal hole shape for minimum stress concentration using parameterized geometry models

Simultaneous shape and thickness optimization

Shape optimization of a flywheel

Adaptive FE-procedures in shape optimization

Fatigue constrained topology optimization

Shape optimization of a bow

Robust shape control of beams with load uncertainties by optimally placed piezo actuators

An integrated approach to topology, sizing, and shape optimization

Robust shape optimization of notches for fatigue-life extension