Crack tip fields at crack initiation and growth under monotonic and large amplitude cyclic loading: Experimental and FE analyses

  • Hwang, Jin-Ha
  • Kim, Hune-Tae
  • Kim, Yun-Jae
  • Nam, Hyun-Suk
  • Kim, Jin-Weon
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초록

In this paper, experiment and FE analyses are performed to investigate crack tip deformation and stress fields under monotonic and large amplitude cyclic loading. Fracture tests using C(T) specimens made of SA508 Gr.1 a and TP316 are performed under monotonic and cyclic loading. Using the debonding analysis, it is found that the isotropic hardening model is relevant for monotonic loading, the kinematic hardening for SA508 Gr.1 a under cyclic loading, and the Chaboche combined hardening for TP316 under cyclic loading. Using the relevant hardening model, crack tip deformation and stress fields at crack initiation and growth are presented.

키워드

Crack growthCrack tip deformationCrack tip stress fieldsMonotonic loadingLarge-amplitude cyclic loadingPLASTIC FRACTURE-RESISTANCEJ-R CURVEFATIGUEBEHAVIORCLOSUREPREDICTIONSTEEL
제목
Crack tip fields at crack initiation and growth under monotonic and large amplitude cyclic loading: Experimental and FE analyses
저자
Hwang, Jin-HaKim, Hune-TaeKim, Yun-JaeNam, Hyun-SukKim, Jin-Weon
DOI
10.1016/j.ijfatigue.2020.105889
발행일
2020-12
유형
Article
저널명
International Journal of Fatigue
141