Contact stress analysis and fatigue life prediction of turbine disc–blade attachment with fir‐tree tenon structure

2021 ◽  
Author(s):  
Rong Yuan ◽  
Ding Liao ◽  
Shun‐Peng Zhu ◽  
Zheng‐Yong Yu ◽  
José Correia ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Stress Analysis ◽  
Contact Stress ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Turbine Disc

Simulation of Fatigue Life Prediction and Enhancement of Connecting Rod of Car Engine

2012 ◽  
Vol 557-559 ◽  
pp. 2410-2414
Author(s):  
Ojo Kurdi ◽  
Mohd Arif Bin Mat Norman ◽  
Ian Yulianti ◽  
Muhammad Nizam Bin Md Rashid
Keyword(s):  
Finite Element Method ◽  
Fatigue Life ◽  
Stress Analysis ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Connecting Rod ◽  
Modified Model ◽  
Stress Region ◽  
Life Enhancement ◽  
Fatigue Life Enhancement

This paper investigates the fatigue life prediction and fatigue life enhancement of connecting rods of car engine. The fatigue life prediction was simulated by analyzing the stress occur in the connecting rod and then simulate the fatigue life prediction. The stress analysis was done by using finite element method. The results obtained from stress analysis is used as the input to simulate the fatigue life using stress-life method. The simulation was done for two models, the existing model and modified model. The modified model is the existing model with increased thickness in the highest stress region. The results show that the modified model has an improved fatigue life up to 231% compared to that of the existing model.

Probabilistic fatigue life prediction and reliability assessment of a high pressure turbine disc considering load variations

2017 ◽  
Vol 27 (10) ◽  
pp. 1569-1588 ◽  
Author(s):  
Shun-Peng Zhu ◽  
Qiang Liu ◽  
Qiang Lei ◽  
Qingyuan Wang
Keyword(s):  
High Pressure ◽  
Fatigue Life ◽  
Life Prediction ◽  
Reliability Assessment ◽  
Fatigue Life Prediction ◽  
Load Spectrum ◽  
High Pressure Turbine ◽  
Random Load ◽  
Load Variations ◽  
Turbine Disc

In the present work, a probabilistic framework for fatigue life prediction and reliability assessment of an engine high pressure turbine disc is proposed to incorporate the effects of load variations and mean stress, which provides a reference for engine structural design under a given target failure probability. Within this framework, a new probabilistic fatigue damage accumulation model under random loadings is elaborated based on a ductility exhaustion model, and probabilistic [Formula: see text] curves for the high pressure turbine disc under different flight missions are derived based on experimental data of turbine disc alloy GH4169. The influence of random load variations on fatigue reliability of the high pressure turbine disc has been investigated and quantified by combining the engine load spectrum with finite element analysis.

scholarly journals Fatigue life prediction of dentin–adhesive interface using micromechanical stress analysis

2011 ◽  
Vol 27 (9) ◽  
pp. e187-e195 ◽  
Author(s):  
Viraj Singh ◽  
Anil Misra ◽  
Orestes Marangos ◽  
Jonggu Park ◽  
Qiang Ye ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Stress Analysis ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Adhesive Interface ◽  
Dentin Adhesive
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