OPERATIONAL CHARACTERISTICS OF ROPES AND CABLES

Philip T. Gibson

1.0 INTRODUCTION 8-3
1.1 Nomenclature 8-3
1.2 Chapter Organization 8-3
2.0 TYPICAL CABLE CONFIGURATIONS 8-4
3.0 CABLE REACTION TO TENSILE LOADING 8-5
3.1 Constructional and Elastic Stretch 8-7
3.2 Stress and Torque Balance 8-9
4.0 CABLE HOCKLING AND KINKING 8-11
5.0 CABLE ROTATION 8-13
6.0 CABLE BEHAVIOR IN BENDING 8-15
6.1 Element Motions During Cable Bending 8-15
6.2 Effects of Element Motions on Cable 8-18
Strength Members
6.3 Effects of Element Motions on Cable Core 8-20
Components
6.4 Cable Strength Reduction Due to Bending 8-22
6.5 Effects of Cable Wrap Angles on Sheaves 8-23
6.6 Effects of Cable Stroke Amplitude on 8-25
Fatigue Life
7.0 MOTION COMPENSATION SYSTEMS 8-27
7.1 Bobbing Boom Systems 8-27
7.2 Ram Tensioner Systems 8-27
8.0 SHEAVES FOR CABLES 8-28
8-2
9.0 CABLE REEVING CONFIGURATIONS 8-30
10.0 CABLE WINDING ON DRUMS 8-32
11.0 CABLE VOID FILLERS 8-33
12.0 CABLE TERMINATIONS 8-33
13.0 CABLE FAILURE MECHANISMS AND 8-36
RETIREMENT CRITERIA
14.0 SPECIAL CONSIDERATIONS FOR WIRE 8-38
AND NON-METALLIC ROPES
15.0 TYPICAL ROPE CONFIGURATIONS 8-38
16.0 ROPE TORQUE 8-39
17.0 ROPE HOCKLING AND KINKING 8-41
18.0 ROPE ROTATION 8-41
19.0 ROPE BEHAVIOR IN BENDING 8-42
20.0 ROPE STRENGTH REDUCTION DUE 8-42
TO BENDING
21.0 SHEAVES FOR ROPES 8-43
22.0 ROPE FAILURE MECHANISMS AND 8-44
RETIREMENT CRITERIA
23.0 WIRE ROPE FATIGUE DATA 8-45
24.0 MATHEMATICAL MODELING 8-48
25.0 BIBLIOGRAPHY 8-50

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