Creep behavior of V-notched components

Frattura ed Integrità Strutturale

J. Torgersen¹  M. Peron¹  F. Berto¹  S.M.J. Razavi¹  P. Gallo² 

[1] University of Science and Technology, Norway ;Aalto University, Finland;

关键词: Creep;    V-notches;    Stress fields;    Stress evaluation;    Strain energy density;   

DOI  :  10.3221/IGF-ESIS.41.57

来源: DOAJ

【 摘 要 】

Geometrical discontinues such as notches play a significant rule in structural integrity of the components, especially when the component is subjected to very severe conditions, such as the high temperature fatigue or creep. In this paper, a generalized form of the existing notch tip creep stressstrain analysis method developed by Nuñez and Glinka, is developed and extended to a wide variety of blunt V-notches. Assuming the generalized Lazzarin-Tovo solution that allows a unified approach to the evaluation of linear elastic stress fields in the vicinity of both cracks and notches is the key in getting the extension to blunt V-notches. Numerous cases have been analysed and the stress fields obtained according to the proposed method were compared with proper finite element data, showing a very good agreement.

【 授权许可】

Unknown