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Continuum approach to high-cycle fatigue modeling

In English

Författare

Summary, in English

A continuum approach to modeling of high-cycle fatigue is proposed. The approach takes a very simple and appealing form and is based on the concepts of a moving endurance surface in the stress space and an evolving damage variable. If the stress state is inside the endurance surface, no damage development occurs whereas damage may develop if the stress state is outside the surface. The endurance surface may move in the stress space as a function of the stress history. The theory is formulated within a proper continuum mechanics framework and it treats uniaxial and multiaxial stress states in a unified manner for arbitrary load histories. A unique feature of the theory is that it allows for the concepts of fatigue limits and accumulation of damage during the load history and thereby avoids cycle-counting techniques. Predictions of the theory are compared with experimental data and the agreement turns out to be close.

Avdelning/ar

Publiceringsår

2008

Språk

Engelska

Sidor

996-1006

Publikation/Tidskrift/Serie

International Journal of Fatigue

Volym

30

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Mechanical Engineering

Nyckelord

  • Damage
  • Continuum mechanics
  • Out-of-phase loading
  • Fatigue modeling

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1879-3452