Stress concentrations in keyways and optimization of keyway design

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Keys and keyways are one of the most common shaft–hub connections. Despite this fact very little numerical analysis has been reported. The design is often regulated by standards that are almost half a century old, and most results reported in the literature are based on experimental photoelastic analysis. The present paper shows how numerical finite element (FE) analysis can improve the prediction of stress concentration in the keyway. Using shape optimization and the simple super elliptical shape, it is shown that the fatigue life of a keyway can be greatly improved with up to a 50 per cent reduction in the maximum stress level. The design changes are simple and therefore practical to realize with only two active design parameters.
Original languageEnglish
JournalJournal of Strain Analysis for Engineering Design
Volume45
Issue number8
Pages (from-to)593-604
ISSN0309-3247
DOIs
Publication statusPublished - 2010

Keywords

  • Parallel key
  • FE
  • Stress concentration
  • Laplace equation
  • Optimization
  • Keyway

Cite this

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title = "Stress concentrations in keyways and optimization of keyway design",
abstract = "Keys and keyways are one of the most common shaft–hub connections. Despite this fact very little numerical analysis has been reported. The design is often regulated by standards that are almost half a century old, and most results reported in the literature are based on experimental photoelastic analysis. The present paper shows how numerical finite element (FE) analysis can improve the prediction of stress concentration in the keyway. Using shape optimization and the simple super elliptical shape, it is shown that the fatigue life of a keyway can be greatly improved with up to a 50 per cent reduction in the maximum stress level. The design changes are simple and therefore practical to realize with only two active design parameters.",
keywords = "Parallel key, FE, Stress concentration, Laplace equation, Optimization, Keyway",
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Stress concentrations in keyways and optimization of keyway design. / Pedersen, Niels Leergaard.

In: Journal of Strain Analysis for Engineering Design, Vol. 45, No. 8, 2010, p. 593-604.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Stress concentrations in keyways and optimization of keyway design

AU - Pedersen, Niels Leergaard

PY - 2010

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N2 - Keys and keyways are one of the most common shaft–hub connections. Despite this fact very little numerical analysis has been reported. The design is often regulated by standards that are almost half a century old, and most results reported in the literature are based on experimental photoelastic analysis. The present paper shows how numerical finite element (FE) analysis can improve the prediction of stress concentration in the keyway. Using shape optimization and the simple super elliptical shape, it is shown that the fatigue life of a keyway can be greatly improved with up to a 50 per cent reduction in the maximum stress level. The design changes are simple and therefore practical to realize with only two active design parameters.

AB - Keys and keyways are one of the most common shaft–hub connections. Despite this fact very little numerical analysis has been reported. The design is often regulated by standards that are almost half a century old, and most results reported in the literature are based on experimental photoelastic analysis. The present paper shows how numerical finite element (FE) analysis can improve the prediction of stress concentration in the keyway. Using shape optimization and the simple super elliptical shape, it is shown that the fatigue life of a keyway can be greatly improved with up to a 50 per cent reduction in the maximum stress level. The design changes are simple and therefore practical to realize with only two active design parameters.

KW - Parallel key

KW - FE

KW - Stress concentration

KW - Laplace equation

KW - Optimization

KW - Keyway

U2 - 10.1243/03093247JSA632

DO - 10.1243/03093247JSA632

M3 - Journal article

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JF - Journal of Strain Analysis for Engineering Design

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