Numerical Analysis of Dynamics and Fatigue Life of the Turbomachine Impeller with Mistuning

2022 ◽  
pp. 682-689
Author(s):  
I. N. Ryzhikov ◽  
O. V. Repetckii ◽  
V. V. Nguyen
Keyword(s):  
Fatigue Life ◽  
Numerical Analysis ◽  
Analysis Of Dynamics

Numerical Analysis of the Effect of Contact Pressure on the Fretting Fatigue Life in a Press-Fitted Shaft

2009 ◽  
Vol 54 (3) ◽  
pp. 1115-1118 ◽  
Author(s):  
Dong-Hyong Lee ◽  
Seok-Jin Kwon ◽  
Won-Hee You ◽  
Jae-Boong Choi ◽  
Young-Jin Kim
Keyword(s):  
Fatigue Life ◽  
Numerical Analysis ◽  
Contact Pressure ◽  
Fretting Fatigue

Crack Non-Circularity and Finite Erosion Effects on the 3D SIFs of a Bauschinger Modified Pressurized Thick-Walled Cylinder

2015 ◽  
Author(s):  
Qin Ma ◽  
Cesar Levy ◽  
Mordechai Perl
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Fatigue Life ◽  
Numerical Analysis ◽  
Material Properties ◽  
Thermal Loading ◽  
Circular Crack ◽  
Finite Element Package ◽  
Pressurized Cylinder ◽  
Walled Cylinder

Our previous studies have demonstrated that the 3D SIFs of a pressurized cylinder can be greatly affected by many factors. While an autofrettage process may introduce favorable residual stresses at the bore of the cylinder, other factors such as erosions and cracks, once introduced, may greatly reduce the effectiveness of the autofrettage results. In this study, we focus on how the non-circularity of cracks affects the 3D SIFs for a cylinder that contains finite erosions while keeping other conditions and material properties unchanged. Numerical analysis was performed using ANSYS, a standard commercially available finite element package. The residual stress due to any autofrettage process was simulated using the equivalent thermal loading. A closer look was given to problems with different crack configurations and how non-circularity of cracks affects the overall fatigue life of the cylinder when combined with other factors in comparison with circular crack only configurations.

Numerical analysis of shot peening parameters for fatigue life improvement

2018 ◽  
Author(s):  
M. R. Isa ◽  
O. S. Zaroog ◽  
P. Raj ◽  
S. N. Sulaiman ◽  
I. Abu Shah ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Numerical Analysis ◽  
Shot Peening ◽  
Life Improvement
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