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Engineering Mechanics, Second Edition: Li Daokui, Liu Daquan, Li Haiyang waiting Published: 2015

Description of content "Engineering Mechanics" is based on the basic requirements of the "Engineering Mechanics" course for middle and young class hours formulated by the Engineering Mechanics Steering Group of the Ministry of Education. "Engineering Mechanics" aims to enable students to master the basic theories and methods of engineering mechanics. It focuses on allowing students to establish basic mechanical concepts and has the ability to analyze and design simple engineering components using engineering mechanics knowledge. It also lays a solid foundation for subsequent courses. basis.

"Engineering Mechanics" is divided into two parts, statics and material mechanics, with a total of 17 chapters and 2 appendices. The statics section includes the basics of statics, the simplification and balance of simple force systems and the simplification and balance of complex force systems. The material mechanics section includes basic assumptions and concepts of material mechanics, axial tensile and compressive stress and mechanical properties of materials, and axial tensile Compression deformation, torsion, bending internal force, bending stress, bending deformation, stress and strain state analysis, strength theory and its applications, combined deformation, energy method, analysis of indeterminate problems, stability problems of compression bars, and brief introduction of alternating stress. In order to facilitate the reader's learning, each chapter is prepared with thinking questions and exercises. The appendix at the end of the book also introduces the geometric properties of the section, extracts the section steel table, and attaches the reference answers to the exercises.

Contents Second Edition Preface First Edition Preface Introduction Chapter 1 Basics of Statics

1.1 Basic concepts

1.2 Axioms of Statics

1.3 Constraints and Constraints

1.4 Force analysis and diagram of rigid body

Chapter 2 Simplification and Balance of Simple Force Systems

2.1 Simplification of Meeting Forces

2.2 Balance of Meeting Forces

2.3 Moment and force couple

2.4 Simplification and balance of force couples

Chapter 3 Simplification and Balance of Complex Force Systems

3.1 The translation theorem of force

3.2 Simplification of plane arbitrary force system

3.3 Equilibrium of arbitrary force system in plane

3.4 Rigid-body system balance

3.5 Simplification of arbitrary force system in space

3.6 Balance of Arbitrary Force System in Space

Chapter 4 Basic Assumptions and Basic Concepts of Material Mechanics

4.1 Mechanical model of material mechanics

4.2 Basic assumptions of material mechanics

4.3 External and Internal Forces

4.4 Stress

4.5 strain

4.6 Hook's Law

Chapter 5 Axial tensile and compressive stress and mechanical properties of materials

5.1 Concept and internal force of axial tension and compression

5.2 Stress of tension rods and Saint-Venant principle

5.3 Mechanical properties of the material under tension

5.4 Mechanical properties of materials under compression

5.5 Stress Concentration and Material Fatigue

5.6 Allowable stress and strength conditions

5.7 Practical calculation of connectors

Chapter 6 Axial Tension and Compression Deformation

6.1 Deformation and superposition principle of tension bar

6.2 Node Displacement of Truss

6.3 Tension, compression and shear strain energy

6.4 Unsteady tension and compression

6.5 Thermal stress and prestressing

Chapter 7 Twist

7.1 Reversed concepts and examples

7.2 Torque and torque diagram

7.3 Stresses on torsion of a circular shaft

7.4 Circular shaft torsional strength

7.5 Calculation of torsional deformation and stiffness of circular shaft

* 7.6 Torsion of non-circular section axis

* 7.7 Thin wall rod twist

Chapter 8 Bending Internal Forces

8.1 Bend concepts and examples

8.2 Calculation of beams

8.3 Shear and bending moments

8.4 Shear Equations and Bending Moment Equations and Shear Diagrams and Bending Moment Diagrams

8.5 Internal forces of flat rigid frames and curved rods

Chapter 9 Bending Stress

9.1 Introduction

9.2 Normal bending stress

9.3 Bending Shear Stress

9.4 Measures to improve flexural strength

Chapter 10 Bending Deformation

10.1 Introduction

10.2 Approximate Differential Equations of Torsion Curves

10.3 Bending Deformation by Integral Method

10.4 Determining Bending Deformation by Superposition

10.5 Simple static indeterminate beam

10.6 Some Measures to Improve Bending Stiffness

Chapter 11 Stress and Strain State Analysis

11.1 Introduction

11.2 The concept and classification of stress states

11.3 Analytical methods for plane stress state analysis

11.4 Graphical Method for Two-Dimensional Stress State Analysis

11.5 Three-way stress state

11.6 Strain analysis in plane strain state

11.7 Stress-strain relationships in complex stress states

* 11.8 Strain energy and distortion energy under complex stress conditions

Chapter 12 Strength Theory and Its Applications

12.1 Strength Theory Overview

12.2 Four common strength theories

12.3 Strength calculations for thin-walled cylinders

* 12.4 Moire strength theory

Chapter 13 Combination Deformation

13.1 Overview

13.2 Oblique bending

13.3 Flexural (Compression) Combination and Core of Section

13.4 Combination of bending and torsion and bending (compression) torsion

Chapter 14 Energy Method

14.1 Introduction

14.2 External Force Work and Strain Energy

14.3 Reciprocity Theorem

14.4 Unit Load Method

14.5 Introduction to Analysis of Uniformly Accelerated Moving Components and Impact Problems

Chapter 15 Analysis of Indefinite Problems

15.1 Overview of Statically Indeterminate Structures

15.2 Analysis of indefinite static external force by force method

15.3 Analysis of indeterminate internal force by force method

* 15.4 Applications of symmetry and antisymmetric properties

* 15.5 Introduction to displacement method

Chapter 16 Stability Problems

16.1 Concept of Stability

16.2 Critical load of slender hinged rods at both ends

16.3 Critical Load of Non-articulated Slim Compression Rods at Both Ends

16.4 Critical stress of various compliance rods

16.5 Checking the stability of the ram

16.6 Reasonable Design of Compression Rods

Chapter 17 Introduction to Alternating Stress

17.1 Introduction

17.2 Alternating Stresses and Types

17.3 SN curves and fatigue limits of materials

17.4 Major Factors Affecting Component Fatigue Limits

Appendix A Geometry of Sections

A.1 Moments and centroids

A.2 Moment of inertia and product of inertia

Description of content "Engineering Mechanics" is based on the basic requirements of the "Engineering Mechanics" course for middle and young class hours formulated by the Engineering Mechanics Steering Group of the Ministry of Education. "Engineering Mechanics" aims to enable students to master the basic theories and methods of engineering mechanics. It focuses on allowing students to establish basic mechanical concepts and has the ability to analyze and design simple engineering components using engineering mechanics knowledge. It also lays a solid foundation for subsequent courses. basis.

"Engineering Mechanics" is divided into two parts, statics and material mechanics, with a total of 17 chapters and 2 appendices. The statics section includes the basics of statics, the simplification and balance of simple force systems and the simplification and balance of complex force systems. The material mechanics section includes basic assumptions and concepts of material mechanics, axial tensile and compressive stress and mechanical properties of materials, and axial tensile Compression deformation, torsion, bending internal force, bending stress, bending deformation, stress and strain state analysis, strength theory and its applications, combined deformation, energy method, analysis of indeterminate problems, stability problems of compression bars, and brief introduction of alternating stress. In order to facilitate the reader's learning, each chapter is prepared with thinking questions and exercises. The appendix at the end of the book also introduces the geometric properties of the section, extracts the section steel table, and attaches the reference answers to the exercises.

Contents Second Edition Preface First Edition Preface Introduction Chapter 1 Basics of Statics

1.1 Basic concepts

1.2 Axioms of Statics

1.3 Constraints and Constraints

1.4 Force analysis and diagram of rigid body

Chapter 2 Simplification and Balance of Simple Force Systems

2.1 Simplification of Meeting Forces

2.2 Balance of Meeting Forces

2.3 Moment and force couple

2.4 Simplification and balance of force couples

Chapter 3 Simplification and Balance of Complex Force Systems

3.1 The translation theorem of force

3.2 Simplification of plane arbitrary force system

3.3 Equilibrium of arbitrary force system in plane

3.4 Rigid-body system balance

3.5 Simplification of arbitrary force system in space

3.6 Balance of Arbitrary Force System in Space

Chapter 4 Basic Assumptions and Basic Concepts of Material Mechanics

4.1 Mechanical model of material mechanics

4.2 Basic assumptions of material mechanics

4.3 External and Internal Forces

4.4 Stress

4.5 strain

4.6 Hook's Law

Chapter 5 Axial tensile and compressive stress and mechanical properties of materials

5.1 Concept and internal force of axial tension and compression

5.2 Stress of tension rods and Saint-Venant principle

5.3 Mechanical properties of the material under tension

5.4 Mechanical properties of materials under compression

5.5 Stress Concentration and Material Fatigue

5.6 Allowable stress and strength conditions

5.7 Practical calculation of connectors

Chapter 6 Axial Tension and Compression Deformation

6.1 Deformation and superposition principle of tension bar

6.2 Node Displacement of Truss

6.3 Tension, compression and shear strain energy

6.4 Unsteady tension and compression

6.5 Thermal stress and prestressing

Chapter 7 Twist

7.1 Reversed concepts and examples

7.2 Torque and torque diagram

7.3 Stresses on torsion of a circular shaft

7.4 Circular shaft torsional strength

7.5 Calculation of torsional deformation and stiffness of circular shaft

* 7.6 Torsion of non-circular section axis

* 7.7 Thin wall rod twist

Chapter 8 Bending Internal Forces

8.1 Bend concepts and examples

8.2 Calculation of beams

8.3 Shear and bending moments

8.4 Shear Equations and Bending Moment Equations and Shear Diagrams and Bending Moment Diagrams

8.5 Internal forces of flat rigid frames and curved rods

Chapter 9 Bending Stress

9.1 Introduction

9.2 Normal bending stress

9.3 Bending Shear Stress

9.4 Measures to improve flexural strength

Chapter 10 Bending Deformation

10.1 Introduction

10.2 Approximate Differential Equations of Torsion Curves

10.3 Bending Deformation by Integral Method

10.4 Determining Bending Deformation by Superposition

10.5 Simple static indeterminate beam

10.6 Some Measures to Improve Bending Stiffness

Chapter 11 Stress and Strain State Analysis

11.1 Introduction

11.2 The concept and classification of stress states

11.3 Analytical methods for plane stress state analysis

11.4 Graphical Method for Two-Dimensional Stress State Analysis

11.5 Three-way stress state

11.6 Strain analysis in plane strain state

11.7 Stress-strain relationships in complex stress states

* 11.8 Strain energy and distortion energy under complex stress conditions

Chapter 12 Strength Theory and Its Applications

12.1 Strength Theory Overview

12.2 Four common strength theories

12.3 Strength calculations for thin-walled cylinders

* 12.4 Moire strength theory

Chapter 13 Combination Deformation

13.1 Overview

13.2 Oblique bending

13.3 Flexural (Compression) Combination and Core of Section

13.4 Combination of bending and torsion and bending (compression) torsion

Chapter 14 Energy Method

14.1 Introduction

14.2 External Force Work and Strain Energy

14.3 Reciprocity Theorem

14.4 Unit Load Method

14.5 Introduction to Analysis of Uniformly Accelerated Moving Components and Impact Problems

Chapter 15 Analysis of Indefinite Problems

15.1 Overview of Statically Indeterminate Structures

15.2 Analysis of indefinite static external force by force method

15.3 Analysis of indeterminate internal force by force method

* 15.4 Applications of symmetry and antisymmetric properties

* 15.5 Introduction to displacement method

Chapter 16 Stability Problems

16.1 Concept of Stability

16.2 Critical load of slender hinged rods at both ends

16.3 Critical Load of Non-articulated Slim Compression Rods at Both Ends

16.4 Critical stress of various compliance rods

16.5 Checking the stability of the ram

16.6 Reasonable Design of Compression Rods

Chapter 17 Introduction to Alternating Stress

17.1 Introduction

17.2 Alternating Stresses and Types

17.3 SN curves and fatigue limits of materials

17.4 Major Factors Affecting Component Fatigue Limits

Appendix A Geometry of Sections

A.1 Moments and centroids

A.2 Moment of inertia and product of inertia

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