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Energy-based method for the assessment of the cumulative slip increment in frictional contacts subjected to cyclic loadings

International Journal of Solids and Structures, ISSN: 0020-7683, Vol: 256, Page: 111926
2022
  • 1
    Citations
  • 0
    Usage
  • 2
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    1
  • Captures
    2
  • Mentions
    1
    • News Mentions
      1
      • News
        1

Most Recent News

Recent Studies from Safran Group Add New Data to Solids and Structures (Energy-based Method for the Assessment of the Cumulative Slip Increment In Frictional Contacts Subjected To Cyclic Loadings)

2022 DEC 12 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Researchers detail new data in Solids and Structures. According

Article Description

The cumulative slip phenomenon is often observed as a limit state in mechanical assemblies involving interference or press-fits and subjected to cyclic thermomechanical loadings. In engineering structural applications, it may prove very difficult to annihilate completely the occurrence of this phenomenon by targeting a slip-shakedown limit state, due to design and other mechanical constraints. Consequently, the cumulated relative slip magnitude on the contact interface, after a given of applied cycles, should be anticipated to prevent any unexpected contact with other mechanical components that may result in seizure or affect the normal structural behaviour of the assembly. In this paper, a novel theoretical approach is proposed to derive the cumulative relative slip increment from the frictional dissipated energy per cycle. In particular, two independent methods – one based on the rigid body slip property and the other using the unified energy-based approach from fatigue crack growth theory – are considered here to determine the same expression of the expected quantity. The obtained formula is evaluated through various analytical examples with a special focus on bushing migration in interference-fit assemblies. It is shown, in each case, to be in perfect agreement with the incremental displacement calculation of the cumulative slip increment when the cumulative slip phenomenon occurs.

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