Plasticity in fretting of coated substrates

Citation
Mr. Begley et Jw. Hutchinson, Plasticity in fretting of coated substrates, ENG FRACT M, 62(2-3), 1999, pp. 145-164
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
ENGINEERING FRACTURE MECHANICS
ISSN journal
0013-7944 → ACNP
Volume
62
Issue
2-3
Year of publication
1999
Pages
145 - 164
Database
ISI
SICI code
0013-7944(199901/02)62:2-3<145:PIFOCS>2.0.ZU;2-P
Abstract
A detailed analysis is performed of the plastic deformation in a metal subs trate fretted by a flat-bottomed circular peg under steady normal load and cyclic tangential load. The substrate is coated with a thin layer of soft m etal. Two limiting asymptotic problems are identified which characterize sm all scale yielding behavior in the substrate in the vicinity of the corners of the peg. Deformation within the plastic zone is characterized, includin g regions of elastic shakedown, steady reversed cyclic plastic straining, a nd strain ratchetting. Implications for nucleation of fretting cracks are d iscussed. (C) 1998 Elsevier Science Ltd. All rights reserved.