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May 30, 2017

EBOOK - Mechanics of Materials 6th (Beer Johnston)


EBOOK - Cơ học vật liệu 6th - Tác giả: Beer Johnston (838 Trang).

The main objective of a basic mechanics course should be to develop in the engineering student the ability to analyze a given problem in a simple and logical manner and to apply to its solution a few fundamental and well-understood principles. This text is designed for the first course in mechanics of materials or strength of materials offered to engineering students in the sophomore or junior year. The authors hope that it will help instructors achieve this goal in that particular course in the same way that their other texts may have helped them in statics and dynamics.


1 Introduction - Concept of Stress  2
1.1  Introduction 4
1.2  A Short Review of the Methods of Statics  4
1.3  Stresses in the Members of a Structure  7
1.4  Analysis and Design  8
1.5  Axial Loading; Normal Stress  9
1.6  Shearing Stress  11
1.7  Bearing Stress in Connections  13
1.8  Application to the Analysis and Design of Simple
Structures 13
1.9  Method of Problem Solution  16
1.10 Numerical Accuracy  17
1.11 Stress on an Oblique Plane under Axial Loading  26
1.12 Stress under General Loading Conditions;
Components of Stress  27
1.13 Design Considerations  30
Review and Summary for Chapter 1  42
2 Stress and Strain Axial
Loading 52
2.1  Introduction 54
2.2  Normal Strain under Axial Loading  55
2.3  Stress-Strain Diagram  57
*2.4  True Stress and True Strain  61
2.5  Hooke’s Law; Modulus of Elasticity  62
2.6  Elastic versus Plastic Behavior of a Material  64
2.7  Repeated Loadings; Fatigue  66
2.8  Deformations of Members under Axial Loading  67
2.9  Statically Indeterminate Problems  78
2.10 Problems Involving Temperature Changes  82
2.11 Poisson’s Ratio  93
2.12 Multiaxial Loading; Generalized Hooke’s Law  94
*2.13 Dilatation; Bulk Modulus  96
2.14 Shearing Strain  98
2.15 Further Discussion of Deformations under Axial Loading;
Relation among E, n, and G101
*2.16 Stress-Strain Relationships for Fiber-Reinforced Composite
Materials 103
2.17 Stress and Strain Distribution under Axial Loading;
Saint-Venant’s Principle  113
2.18 Stress Concentrations  115
2.19 Plastic Deformations  117
*2.20 Residual Stresses  121
Review and Summary for Chapter 2  129
3 Torsion 140
3.1  Introduction 142
3.2  Preliminary Discussion of the Stresses in a Shaft  144
3.3  Deformations in a Circular Shaft  145
3.4  Stresses in the Elastic Range  148
3.5  Angle of Twist in the Elastic Range  159
3.6  Statically Indeterminate Shafts  163
3.7  Design of Transmission Shafts  176
3.8  Stress Concentrations in Circular Shafts  179
*3.9  Plastic Deformations in Circular Shafts  184
*3.10 Circular Shafts Made of an Elastoplastic Material  186
*3.11  Residual Stresses in Circular Shafts  189
*3.12 Torsion of Noncircular Members  197
*3.13 Thin-Walled Hollow Shafts  200
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