Research on factors affecting fretting fatigue life of high‐temperature dovetail tenon

Yang, Bowen; Huo, Junzhou; Gao, Qiang; Ren, Rong

doi:10.1111/ffe.13654

Cited by 6 publications

(6 citation statements)

References 30 publications

(30 reference statements)

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“…The life design of key components and key structures of large-scale complex equipment affects and restricts the development of high-end manufacturing. A turbine engine dovetail fatigue fracture caused the engine to stop [1] .The fracture of a large TBM main bearing of a certain model delays the progress of the project. Fastener fractures at key positions of a certain type of aircraft cause major flight hazards [2] .…”

Section: Introductionmentioning

confidence: 99%

A strain reconstruction method for uncertain boundary conditions

Huo

Zhang

et al. 2023

Preprint

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Affected by complex boundary conditions and redundant structural assembly, it is difficult to collect stress and strain information on key structures of complex mechanical equipment, resulting in difficult life monitoring and large calculation errors. The purpose of this study is to provide reliable strain data for accurate life prediction and solve the problem of obtaining critical structural strain under uncertain loads and other complex boundary conditions. In this paper, a neural network training dataset is established based on finite element analysis data and experimental data, and the neural network architecture and parameter optimization are carried out for each data set. Finally, the strain reconstruction model based on a neural network is established, which solves the two problems of accurate equivalence from structure to strain and equivalence from strain to load. Feature experimental samples were designed to verify the universality of the research method. The model is experimentally verified with an average error of less than 5%. It realizes the global strain reconstruction from the local measurement point to the overall structure, which can be used for real-time and full-cycle life monitoring of the structure;

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Section: Introductionmentioning

confidence: 99%

A strain reconstruction method for uncertain boundary conditions

Huo

Zhang

et al. 2023

Preprint

Self Cite

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“…Fatigue is the main cause of some mechanical failures, such as vehicles and turbine blades of aero‐engines 1–6 . Before fatigue failure occurs, the surfaces of turbine blades usually do not exhibit obvious features.…”

Section: Introductionmentioning

confidence: 99%

“…Fatigue is the main cause of some mechanical failures, such as vehicles and turbine blades of aero-engines. [1][2][3][4][5][6] Before fatigue failure occurs, the surfaces of turbine blades usually do not exhibit obvious features. Therefore, the influence of fatigue failure on turbine blades should be considered when designing mechanical structures.…”

Section: Introductionmentioning

confidence: 99%

On the consideration of loading interaction in combined high and low cycle fatigue life prediction

Liu

Wang

Shen

et al. 2023

Fatigue Fract Eng Mat Struct

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Based on the analysis of the test data and Miner's rule, a combined high and low cycle fatigue (CCF) life prediction model considering the loading interaction is established by introducing coupled damage. The coupled damage is determined by multiplying the high cycle fatigue damage and the low cycle fatigue damage by a coupled damage coefficient K. According to the analysis of the test data, the coupled damage coefficient K is positively correlated with the high cycle stress ratio R. In addition, an interaction factor, which reflects the loading interaction effect, is introduced to correct the coefficient K. The CCF experimental data of four materials are employed for model verification and comparison among the proposed model, Miner's rule, and Trufyakov-Kovalchuk model (T-K model). The proposed model exhibits a relatively higher prediction accuracy and is more suitable for predicting the fatigue life of CCF. K E Y W O R D S combined high and low cycle fatigue, coupled damage, fatigue life, loading interaction Highlights 1. A combined fatigue life prediction model is proposed considering loading interaction.2. Coupled damage coefficient is determined through analysis of the test data. 3. The proposed model exhibits a relatively higher prediction accuracy.

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“…Furthermore, fretting cracks are influenced by numerous factors, such as the fatigue load and geometric shape of the specimen. 16 Consequently, investigating multi-site fretting crack initiation in press-fitted axles solely through fatigue tests presents challenges.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the concealed nature of fretting cracks within the contact surface, it is challenging to measure the local stress near the crack using strain gauges, and accurately capturing the crack initiation stage is difficult. Furthermore, fretting cracks are influenced by numerous factors, such as the fatigue load and geometric shape of the specimen 16 . Consequently, investigating multi‐site fretting crack initiation in press‐fitted axles solely through fatigue tests presents challenges.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the multi‐site fretting fatigue crack initiation of press‐fitted axles

Zou,

Zeng,

Tian

et al. 2023

Fatigue Fract Eng Mat Struct

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In this study, fretting fatigue tests were conducted to gather information on both fretting fatigue and fretting wear. Subsequently, an evaluation methodology that combined the Modified Wöhler Curve Method (MWCM) with the theory of critical distance (TCD) was established to investigate multi‐site fretting crack initiation. The results showed that the fretting fatigue damage could be reasonably evaluated using the MWCM equivalent stress σMWCM. σMWCM is greatly influenced by both bulk stress and fretting wear‐induced stress concentration. The stress field close to the wear boundary increased due to the continuous fretting wear, leading to an increase in σMWCM; meanwhile, the bulk stress near the wear boundary decreased as the crack propagated, resulting in a decrease in σMWCM. The combined effect of the fretting crack propagation and wear caused σMWCM, which was located within an annular strip of the axle, to exceed the critical value, causing the multi‐site fretting crack initiation.

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Research on factors affecting fretting fatigue life of high‐temperature dovetail tenon

Cited by 6 publications

References 30 publications

A strain reconstruction method for uncertain boundary conditions

A strain reconstruction method for uncertain boundary conditions

On the consideration of loading interaction in combined high and low cycle fatigue life prediction

Experimental and numerical study on the multi‐site fretting fatigue crack initiation of press‐fitted axles

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