Fretting Friction and Wear at Bolted Joint Interfaces.

Format:

Book

Author/Creator:

Li, Dongwu.

Contributor:

Xu, Chao.

Series:

IOP Ebooks Series

Language:

English

Subjects (All):

Bolted joints.

Friction.

Physical Description:

1 online resource (151 pages)

Edition:

1st ed.

Place of Publication:

Bristol : Institute of Physics Publishing, 2024.

Summary:

This book introduces the latest research on friction and wear at bolted joint interfaces. It explores the interface mechanics behaviour and modelling methods of bolted joints, helping readers to deepen their understanding through experimental tests and in-depth theoretical analysis, based on the latest research and developments in the field.

Contents:

Intro

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Bolted joints are a widely used mechanical fastening method, found in various machines, automobiles, aerospace systems, and architectural structures. Bolted connections offer strong preload along with the advantages of easy disassembly and low cost. However, a small amount of relative motion at connection interfaces, known as &amp

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, can lead to wear, preload loss, and nonlinear mechanical behavior, which can significantly impact the service l

Acknowledgments

Author biographies

Chao Xu

Dongwu Li

Symbols

Chapter Introduction

1.1 Background

1.2 Interface fretting test technology

1.3 Friction and wear behavior at joint interfaces

1.4 Contact modeling of joint interfaces

1.4.1 Spring element

1.4.2 Thin layer element

1.4.3 Zero-thickness element

1.4.4 Friction hysteresis model

1.5 Contribution and organization of this book

Bibliography

Chapter Fretting test method for bolted joint interface

2.1 Fretting test apparatus

2.1.1 Description of the test apparatus

2.1.2 Excitation system

2.1.3 Measurement system

2.1.4 Bolted joint specimens

2.2 Performance analysis of the test apparatus

2.2.1 Typical experimental results

2.2.2 Repeatability

2.2.3 Effect of excitation frequency

2.3 Measurement accuracy analysis

2.3.1 Finite element contact analysis

2.3.2 Lumped-parameter model of bolted joint

2.3.3 Correction of experimental results

2.4 Summary

Chapter Fretting wear of bolted joint interfaces under harmonic vibrations

3.1 Fretting wear experimental method

3.1.1 Bolted joint specimens

3.1.2 Wear test plan

3.2 Friction hysteresis curves

3.2.1 Effect of bolt preload

3.2.2 Effect of excitation amplitude.

3.3 Wear test results and discussion

3.3.1 Evolution of hysteresis loops

3.3.2 Evolution of bolt preloads

3.3.3 Evolution of contact parameters

3.3.4 Worn surfaces

3.4 Summary

Chapter Fretting wear of bolted joint interfaces under random vibrations

4.1 Fretting test method under random excitation

4.1.1 Narrowband random process

4.1.2 Fretting wear test plan

4.1.3 Stability of random excitation

4.2 Contact parameter estimation

4.2.1 Data processing strategy

4.2.2 Contact parameter estimation method

4.3 Results and discussion

4.3.1 Effect of bolt preload

4.3.2 Effect of excitation level

4.3.3 Effect of surface roughness

4.4 Summary

Chapter A phenomenological modeling method for friction hysteresis

5.1 Introduction

5.2 Generalized Iwan model

5.2.1 The Iwan model and density function

5.2.2 Modeling method of generalized Iwan model

5.2.3 Effect of contact pressure distribution on friction

5.3 Analytical validation in a spherical contact

5.3.1 Mindlin analytical solution

5.3.2 Modeling sphere-on-sphere contact

5.3.3 Comparison with the analytical solution

5.4 Experimental validation in a plane contact

5.4.1 Modeling friction hysteresis in lap joints

5.4.2 Model validation

5.4.3 Model parametric analysis

5.5 Summary

Chapter Modeling friction hysteresis at bolted joint interfaces

6.1 Contact pressure at bolted joint interfaces

6.2 Modeling friction hysteresis

6.2.1 Sliding stress distribution

6.2.2 Iwan density function

6.2.3 Force-displacement relationship

6.3 Quasi-static experimental verification

6.4 Dynamics prediction of a bolted joint structure

6.4.1 The Gaul resonator

6.4.2 Dynamic response calculation method

6.4.3 Dynamic response

6.5 Summary

Bibliography.

Chapter A physics-based multi-scale friction model

7.1 The multi-scale modeling approach

7.1.1 Contact pressure

7.1.2 Fractal contact model

7.1.3 Normal contact

7.1.4 Tangential contact stiffness

7.1.5 Friction hysteresis

7.2 Experimental tests

7.2.1 Experimental method

7.2.2 Experimental results

7.3 Model validation and discussion

7.3.1 Model parameter estimation

7.3.2 Model validation

7.3.3 Effect of contact radius

7.3.4 Effect of interface discretization

7.4 Summary

Chapter Modeling of wear at bolted joint interfaces

8.1 Introduction

8.2 Wear-dependent contact parameters

8.3 Wear model

8.4 Influence of wear on the dynamic response

8.5 Summary

Notes:

Description based on publisher supplied metadata and other sources.

Part of the metadata in this record was created by AI, based on the text of the resource.

ISBN:

9780750362160

0750362162

OCLC:

1478304410