Fatigue Life Analysis of Aero-engine Blades for Abrasive Belt Grinding Considering Residual Stress

2021 ◽  
pp. 105846
Author(s):  
Guijian Xiao ◽  
Benqiang Chen ◽  
Shaochuan Li ◽  
Xiaoqin Zhuo
Keyword(s):  
Residual Stress ◽  
Fatigue Life ◽  
Belt Grinding ◽  
Abrasive Belt ◽  
Aero Engine ◽  
Life Analysis ◽  
Fatigue Life Analysis

scholarly journals The Analysis and Simulation with the Fatigue Life of Hemispherical Resonator Gyro

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Lijun Song ◽  
Jiayao Ni ◽  
Lei Zhou ◽  
Wangliang Zhao ◽  
Shaoliang Li ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stress Intensity Factor ◽  
Fatigue Life ◽  
Structural Design ◽  
Fused Silica ◽  
Ansys Software ◽  
Hemispherical Resonator ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Fused Silica Glass

The life and damage of hemispherical resonator are important factors that directly affect the service time and safety of high-precision hemispherical resonator gyro. However, the fused silica glass material used in the hemispherical resonator which was processed in China is mainly imported, and it is too expensive to use the traditional fatigue life experiment, so it is necessary to use the software of fatigue life analysis to analyze its fatigue life. In the paper, the ANSYS software is used to analyze the fatigue life of fused silica hemispherical resonator, to determine the dangerous parts caused by the residual stress to analyze the crack propagation in the fatigue parts, and to obtain the sum stress intensity factor, so as to effectively monitor and prevent the fatigue-prone parts in the process of structural design and use of the hemispherical resonator.

scholarly journals Residual Stress of a TC17 Titanium Alloy after Belt Grinding and Its Impact on the Fatigue Life

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2218 ◽  
Author(s):  
Yi He ◽  
Guijian Xiao ◽  
Wei Li ◽  
Yun Huang
Keyword(s):  
Residual Stress ◽  
Titanium Alloy ◽  
Fatigue Life ◽  
Compressive Stress ◽  
Contact Force ◽  
Residual Compressive Stress ◽  
Feed Speed ◽  
Belt Grinding ◽  
Surface Residual Stress ◽  
Abrasive Belt

Titanium alloy materials are widely used in the design of key parts, such as aeroengine blades and integral blades. The surface residual stress has a great influence on the fatigue life of the parts mentioned above. Presently, abrasive belt grinding can form residual stress on the surface. However, the formation mechanism has not yet been revealed, providing the impetus for the present study. First of all, the surface residual stress is characterized based on Bragg’s law. The influence of contact force, reciprocating frequency, and feed speed on the residual stress of a titanium alloy abrasive belt grinding is obtained using an experimental method. The residual stress model is simulated by the tensile force on the surface of the model, and the fatigue life of the bar under a sinusoidal tensile load is analyzed by simulating the fatigue test of the titanium alloy bar. Finally, fatigue testing and fracture analysis are carried out. The experimental results show that with the increase of the grinding contact force, increase of the reciprocating frequency, and decrease of the feed speed, the residual compressive stress on the surface of the parts increases and the fatigue life is higher at the same working stress level. It also shows that the residual compressive stress produced by abrasive belt grinding is in the range of 120–300 MPa. The fatigue simulation curve’s inflection point appears at the level of 550 MPa. The error between the simulation data and the experimental data is less than 10%, which shows the accuracy of the simulation experiment. The fracture morphology at room temperature is a ductile fracture with fine equiaxed dimples.

Fatigue life analysis of shot-peened bearing steel

2012 ◽  
Vol 26 (6) ◽  
pp. 1747-1752 ◽  
Author(s):  
Sang-Jae Yoon ◽  
Jung-Hoon Park ◽  
Nak-Sam Choi
Keyword(s):  
Fatigue Life ◽  
Bearing Steel ◽  
Life Analysis ◽  
Fatigue Life Analysis
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