A New Crack Initiation Life Prediction Method for Arbitrary Multiaxial Loading Considering Mean Stress Effect

Fatigue '96 ◽  
1996 ◽  
pp. 1007-1012 ◽  
Author(s):  
W. Ott ◽  
O. Baumgart ◽  
K.H. Trautmann ◽  
H. Nowack
Keyword(s):  
Crack Initiation ◽  
Life Prediction ◽  
Prediction Method ◽  
Stress Effect ◽  
Mean Stress ◽  
Multiaxial Loading ◽  
Mean Stress Effect ◽  
Crack Initiation Life

Mean stress effect correction in strain energy-based fatigue life prediction of metals

2016 ◽  
Vol 26 (8) ◽  
pp. 1219-1241 ◽  
Author(s):  
Shun-Peng Zhu ◽  
Qiang Lei ◽  
Hong-Zhong Huang ◽  
Yuan-Jian Yang ◽  
Weiwen Peng
Keyword(s):  
Fatigue Life ◽  
Strain Energy ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Stress Effect ◽  
Mean Stress ◽  
Mean Stress Effect

scholarly journals A Modified Walker Model Dealing with Mean Stress Effect in Fatigue Life Prediction for Aeroengine Disks

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Shan Lu ◽  
Yunlai Su ◽  
Mao Yang ◽  
Yan Li
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Maximum Stress ◽  
Fatigue Life Prediction ◽  
Stress Effect ◽  
Mean Stress ◽  
Mean Stress Effect ◽  
Proposed Model ◽  
Smooth Bars ◽  
Turbine Disks

Mean stress effect plays an important role in fatigue life prediction, and it is discovered that maximum stress has nonnegligible influence on mean stress effect. Therefore, a modified Walker model is proposed to account for mean stress effect on fatigue life of aeroengine disks, which contains the influence of stress ratio and maximum stress on mean stress effect. Eight sets of fatigue data for standard smooth bars from six kinds of materials commonly used in aeroengine disks as well as two sets of experimental data from simulated specimens of turbine disks were employed to investigate the prediction capability of the proposed model against other candidate mean stress relationships. It is found that Goodman model generates most conservative results, while Morrow model overestimates fatigue life for most cases. SWT model yields similar results to Walker model but with less accuracy. The results of the modified Walker model turn out to be superior to those of any other candidate models for all cases examined, especially for large mean stress ones. Thus, the modified Walker model can be an effective method to predict fatigue lives of aeroengine disks influenced by mean stresses.

Dislocation mechanisms of mean stress effect on cyclic plasticity

2004 ◽  
Vol 46 (7-8) ◽  
pp. 363-373
Author(s):  
Hai Ni ◽  
Zhirui Wang
Keyword(s):  
Cyclic Plasticity ◽  
Stress Effect ◽  
Mean Stress ◽  
Mean Stress Effect

scholarly journals Mean Stress Effect in Stress-Life for Hard Steels

2020 ◽  
pp. 106101
Author(s):  
D. Gaia da Silva ◽  
J.T. Lockwood ◽  
W. Liang ◽  
T.H. Topper
Keyword(s):  
Stress Effect ◽  
Mean Stress ◽  
Mean Stress Effect

Influence of casting defect and SDAS on the multiaxial fatigue behaviour of A356-T6 alloy including mean stress effect

2015 ◽  
Vol 80 ◽  
pp. 90-102 ◽  
Author(s):  
Mohamed Iben Houria ◽  
Yves Nadot ◽  
Raouf Fathallah ◽  
Matthew Roy ◽  
Daan M. Maijer
Keyword(s):  
Fatigue Behaviour ◽  
Multiaxial Fatigue ◽  
Stress Effect ◽  
Mean Stress ◽  
Casting Defect ◽  
Mean Stress Effect
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