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A Study on the Nucleation of Fretting Fatigue Cracks at the Heterogeneity Material  

Goh Jun Bin (한밭대학교 기계설계공학과)
Goh Chung Hyun (한밭대 기계설계공학과)
Lee Kee Seok (충남대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.3, 2005 , pp. 103-109 More about this Journal
Abstract
Since fretting fatigue damage accumulation occurs over relatively small volumes, the role of the microstructure is quite significant in fretting fatigue analysis. The heterogeneity of discrete grains and their crystallographic orientation can be accounted for using continuum crystallographic cyclic plasticity models. Such a constitutive law used in parametric studies of contact conditions may ultimately result in more thorough understanding of realistic fretting fatigue processes. The primary focus of this study is to explore the influence of microstructure as well as the magnitude of the normal force and tangential force amplitude during the fretting fatigue process. Fretting maps representing cyclic plastic strain behaviors are also developed to shed light on the cyclic deformation mechanisms.
Keywords
fretting; Crystal plasticity; Crack nucleation; Shakedown map; Elastic shakedown; Cyclic plasticity; Ratchetting;
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