Finite element analysis of fretting contact for dissimilar and nonhomogeneous materials

Download

1-s2.0-S2452321617303141-main.pdf

Date

2017-09-07

Author

Korkmaz, Yezdan M.
Çöker, Demirkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

169
views

113
downloads

Fretting problem arises in the case of relatively small sliding motion between contacting surfaces leading to reduction in fatigue life of these parts significantly. The purpose of this study is to investigate the effects of fretting on the contact region in a cylindrical on flat contact configuration. In order to identify fretting contact, a finite element (FE) model was constructed by using commercial finite element package ABAQUS (TM). Fretting contact is studied under two types of loading: tangential loading of the pad and axial bulk stress loading of the specimen. The numerical calculated stresses are compared with Mindlin analytical solution and Nowell and Hills analytical solution (which includes the effect of bulk stress). In order to get a better estimate of fretting in real type structures such as bolted joints and lug type structures, dissimilar materials in the contact region are then studied. For dissimilar materials, in the light of the conducted numerical analysis, Mindlin solution does not give reliable results in terms of shear traction distribution when compared to FE results. Finally, the effect of non-homogeneity in materials is investigated by addition of circular voids. (C) 2017 The Authors. Published by Elsevier B.V.

Subject Keywords

Fretting, Fatigue, Finite element modeling, Contact modeling, Friction

URI

https://hdl.handle.net/11511/48460

DOI

https://doi.org/10.1016/j.prostr.2017.07.196

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Finite element analysis of fretting contact for nonhomogenous materials Korkmaz, Y. M.; Çöker, Demirkan (2017-09-15) Fretting problem arises in the case of relatively small sliding motion between contacting surfaces. Fatigue life of the components that are in contact with each other, especially in rotorcraft may be significantly reduced due to fretting. The purpose of this study is to investigate material inhomogeneity near the contact region on the fretting problem in a cylindrical on flat contact configuration. A finite element (FE) model was constructed by using commercial finite element package ABAQUS (TM) to study pa...
Vibration fatigue analysis and testing of notched beams Demirel, Gürzap İsmail; Kayran, Altan; Department of Aerospace Engineering (2019) Mechanical fatigue is an important phenomenon when the structures are exposed to dynamic, fluctuating loadings. Especially aerospace structures are commonly exposed to random vibration loadings. Even if the components are stable and durable for static requirements, vibration fatigue failures can occur due to the dynamic and fluctuating loadings. Moreover, if the loading frequency has a wide bandwidth as in random vibration loadings, the natural frequencies or resonance regions of the structures are disturbe...
EXPERIMENTAL STUDY AND FINITE ELEMENT ANALYSIS OF DOVETAIL ATTACHMENTS Akay, Ahmet Arda; Çöker, Demirkan; Kayran, Altan; Gürses, Ercan (2017-11-09) In this study, the contact stresses in the dovetail-rim region of an aero-engine compressor disc under the action of the centrifugal forces of the blades are investigated. Dovetail-rim consists of two parts: the blade and the disc. Highly stressed areas occur at the edges of the interface of the disc and the blade during the operation. Fretting fatigue is commonly seen in dovetails, which is caused by high stress gradients. An experimental setup which is capable of performing tension test on a dovetail rim ...
Vibration Fatigue Analysis of a Cantilever Beam Using Different Fatigue Theories Eldoğan, Yusuf; Ciğeroğlu, Ender (2014-02-11) In this study, vibration fatigue analysis of a cantilever beam is performed using an in-house numerical code. Finite element model (FEM) of the cantilever beam verified by tests is used for the analysis. Several vibration fatigue theories are used to obtain fatigue life of the cantilever beam for white noise random input and the results obtained are compared with each other. Fatigue life calculations are repeated for different damping ratios and the effect of damping ratio is studied. Moreover, using strain...
Implementation of Dirlik’s damage model for the vibration fatigue analysis Demirel, Gürzap İ.; Kayran, Altan (2019) Mechanical fatigue is an important phenomenon when the structures are exposed to dynamic, fluctuating loadings. Especially aerospace structures are commonly exposed to random vibration loadings. In this paper, random vibration fatigue is studied both numerically and experimentally. For this purpose, a rectangular cross-section notched beam is designed in order to conduct the vibration fatigue analysis in the frequency domain by the Dirlik's damage model. Aluminum and steel notched beams are prepared in orde...

Citation Formats

Y. M. Korkmaz and D. Çöker, “Finite element analysis of fretting contact for dissimilar and nonhomogeneous materials,” 2017, vol. 5, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48460.