Fig.1

Profile of interference fit pin structure

Fig.2

Schematic diagram of flexible pin under pressure

Fig.3

Diagram of gear loading

Fig.4

Size diagram of scale model (mm)

Fig.5

Model area segmentation

Fig.6

Mesh generation of simulation model

Fig.7

Model boundary constraints

Fig.8

Distribution of contact stress in model

Fig.9

Contact stress versus bending load

Fig.10

Contact stress versus interference

Fig.11

Contact stress versus depth of carburized layer

Fig.12

Distribution of frictional shear traction in model

Fig.13

Frictional shear traction versus bending load

Fig.14

Frictional shear traction versus interference

Fig.15

Friction shear traction versus depth of carburized layer

Fig.16

Distribution of slip amplitude in model

Fig.17

Slip amplitude versus bending load

Fig.18

Slip amplitude versus interference

Fig.19

Effect of depth of carburized layer on slip amplitude

Fig.20

PredictedS-N curve of SWT method

Fig.21

Standard of sample abandonment

Fig.22

Structure of specimen loading

Fig.23

Structure of flexible pin clamp

Fig.24

Flexible pin specimen

Fig.25

S-N curve of flexible pin test

Fig.26

Comparison of fatigue lifes between SWT model prediction and test data

Fig.27

Overall wear view under different bending load conditions

Fig.28

Fretting damage morphology atF=17.471 kN

Fig.29

Fretting damage morphology atF=28.854 kN

Fig.30

Overall wear view at different interferences

Fig.31

Fretting damage morphology of slip and stack of materials

Fig.32

Fretting damage morphology of crack initiation

Fig.33

Fretting damage morphology of longitudinal crack propagation

Fig.34

Fretting damage morphology of oxidation wear of abrasive particles

Fig.35

Overall wear view at different depths of carburized layer

Fig.36

Fretting damage morphology of flake wear

Fig.37

Fretting damage morphology of crack initiation and propagation