Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

A tool to model short crack fatigue growth using a discrete dislocation formulation

In English

Författare

Summary, in English

A method is presented that combines the modelling of cracks by distributed dislocation dipoles with developing plasticity represented by discrete dislocations moving along slip bands. Crack growth is due to the emission of dislocations from the crack tip along preferred slip planes. Eventual annihilation of dislocations occurs by reunion with the corresponding displacement steps of the crack surface. Crack surface overlap is not allowed. The equilibrium state for each load increment is solved iteratively, allowing various crack geometries. The method is applied to the problem of a short edge crack growing in mode I due to fatigue loading. It is shown that the development of a local plastic zone and the propagation of the crack can be monitored in detail.

Publiceringsår

2003

Språk

Engelska

Sidor

559-566

Publikation/Tidskrift/Serie

International Journal of Fatigue

Volym

25

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Materials Engineering
  • Applied Mechanics

Nyckelord

  • short cracks
  • dislocation dipoles
  • discrete dislocations
  • fatigue

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1879-3452