Stiffness and Damping in Mechanical Design (Google eBook)

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CRC Press, May 6, 1999 - Technology & Engineering - 528 pages
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Offers designers and users of mechanical systems an overview of structural stiffness and damping and their critical roles in mechanical design. The text assesses the relationship between stiffness and damping parameters in mechanical systems and structural materials. An accompanying disk contains detailed analyses of stiffness- and damping-critical systems.
  

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Contents

Introduction and Definitions
1
12 INFLUENCE OF STIFFNESS ON STRENGTH AND LENGTH OF SERVICE
8
13 INFLUENCE OF STIFFNESS AND DAMPING ON VIBRATION AND DYNAMICS
11
14 INFLUENCE OF MACHINING SYSTEM STIFFNESS AND DAMPING ON ACCURACY AND PRODUCTIVITY
12
15 GENERAL COMMENTS ON STIFFNESS IN DESIGN
18
16 STRUCTURAL CHARACTERISTICS OF SOME WIDELY USED MATERIALS
20
REFERENCES
24
Stiffness of Structural Components Modes of Loading
25
54 INFLUENCE OF FOUNDATION ON STRUCTURAL DEFORMATIONS
189
55 DEFORMATIONS OF LONG MACHINE BASES
196
REFERENCES
199
Stiffness and Damping of Power Transmission Systems and Drives
200
TRANSMISSION AND DRIVE COMPONENTS
202
63 PARAMETER REDUCTION IN MATHEMATICAL MODELS
224
64 PRACTICAL EXAMPLES OF STRUCTURAL COMPLIANCE BREAKDOWN
233
65 MORE ON STIFFNESS AND DAMPING OF ANTIFRICTION BEARINGS AND SPINDLES
250

22 OPTIMIZATION OF CROSSSECTIONAL SHAPE
33
23 TORSIONAL STIFFNESS
39
24 INFLUENCE OF STRESS CONCENTRATIONS
43
25 STIFFNESS OF FRAMEBED COMPONENTS
44
26 GENERAL COMMENTS ON STIFFNESS ENHANCEMENT OF STRUCTURAL COMPONENTS
48
REFERENCES
50
Preloading
52
32 EMBODIMENTS OF ELEMENTS WITH NONLINEAR STIFFNESS
53
STRENGTHTOSTIFFNESS TRANSFORMATION
66
34 SOME EFFECTS CAUSED BY VARIABLE STIFFNESS
76
REFERENCES
85
Contact Joint Stiffness and Damping
87
42 CONTACT DEFORMATIONS BETWEEN CONFORMING SURFACES
88
43 USE OF CONTACT STIFFNESS DATA IN STRUCTURAL ANALYSIS
94
44 DISPLACEMENTS IN CYLINDRICALCONICAL CONNECTIONS
104
45 CONTACT DEFORMATIONS CAUSED BY MISALIGNMENT OF CONNECTED PARTS
132
46 TANGENTIAL CONTACT COMPLIANCE
135
47 PRACTICAL CASE STUDY OF A MODULAR TOOLING SYSTEM
153
48 DAMPING OF MECHANICAL CONTACTS
156
REFERENCES
163
Supporting Systems and Foundations
165
51 INFLUENCE OF SUPPORT CHARACTERISTICS
166
52 RATIONAL LOCATION OF SUPPORTING AND MOUNTING ELEMENTS
173
53 OVERCONSTRAINED STATICALLY INDETERMINATE SYSTEMS
183
66 DAMPING IN POWER TRANSMISSION SYSTEMS
265
REFERENCES
271
Design Techniques for Reducing Structural Deformations and Damping Enhancement
273
72 COMPENSATION OF STRUCTURAL DEFORMATIONS
279
73 STIFFNESS ENHANCEMENT BY REDUCTION OF STRESS CONCENTRATIONS
288
74 STRENGTHTOSTIFFNESS TRANSFORMATION
290
75 PERFORMANCE ENHANCEMENT OF CANTILEVER COMPONENTS
306
76 ACTIVE SERVOCONTROLLED SYSTEMS FOR STIFFNESS ENHANCEMENT
317
77 DAMPING ENHANCEMENT TECHNIQUES
323
REFERENCES
331
Use of Managed Stiffness in Design
333
82 COMPENSATION FOR STATIC INDETERMINACY ANDOR INACCURACIES IN MECHANICAL SYSTEMS AND TAPERED CONNECTIONS
346
PRACTICAL EXAMPLES
359
84 CONSTANT FORCE ZERO STIFFNESS VIBRATION ISOLATION SYSTEMS
369
85 ANISOTROPIC ELASTIC ELEMENTS AS LIMITED TRAVEL BEARINGS
375
86 PARAMETERS MODIFICATION IN DYNAMIC MODELS
390
REFERENCES
395
SingleDegreeofFreedom Dynamic Systems with Damping
398
Static Stiffness Breakdown for Cylindrical OD Grinders
409
Influence of Axial Force on Beam Vibrations
417
Articles of Interest
421
Index
507
Copyright

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Page 493 - Using the MSE method, the modal damping of a structure may be approximated by the sum of the products of the loss factor of each material and the fraction of strain energy in that material for each mode. In the case of a multimaterial system, the system loss is given by...
Page 493 - Free layer treatments must be fairly thick in order to absorb sufficient amounts of strain energy, and are therefore not weight efficient. Constrained layer treatments are surface treatments where the damping material is sandwiched between the base structure and a constraining layer. The constraining layer causes shear in the damping material as the structure deforms. This type of damping treatment is most commonly used to damp bending modes of surfaces (shell-type modes). A small increase in damping...

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