《材料力學(xué)》也引進(jìn)了多個(gè)版本的英文原版教材，但由于教育體制和教學(xué)模式的差異，一時(shí)還很難直接用于我國目前的課程教學(xué)�？s編和改編是把優(yōu)秀原版教材引入雙語教學(xué)的橋梁。我們在開展材料力學(xué)雙語教學(xué)的過程中，針對本專業(yè)的特點(diǎn)，嘗試在國外優(yōu)秀教材基礎(chǔ)上精選其主體內(nèi)容并進(jìn)行適當(dāng)縮編的方式，取得了較好的效果。通過幾年的教學(xué)實(shí)踐我們體會(huì)到，縮編的原版教材有內(nèi)容貼近教學(xué)和語言原汁原味等特點(diǎn)，適于教學(xué)。
近年來，國家教育部出臺(tái)的一系列倡導(dǎo)高等院校開展雙語教學(xué)、引進(jìn)原版教材的政策，對于加快我國高等教育改革的步伐，培養(yǎng)具有國際競爭力的高水平技術(shù)人才，發(fā)揮了積極的促進(jìn)作用。材料力學(xué)也引進(jìn)了多個(gè)版本的英文原版教材，但由于教育體制和教學(xué)模式的差異，一時(shí)還很難直接用于我國目前的課程教學(xué)。縮編和改編是把優(yōu)秀原版教材引入雙語教學(xué)的橋梁。我們在開展材料力學(xué)雙語教學(xué)的過程中，針對本專業(yè)的特點(diǎn)，嘗試在國外優(yōu)秀教材基礎(chǔ)上精選其主體內(nèi)容并進(jìn)行適當(dāng)縮編的方式，取得了較好的效果。通過幾年的教學(xué)實(shí)踐我們體會(huì)到，縮編的原版教材有內(nèi)容貼近教學(xué)和語言原汁原味等特點(diǎn)，適于教學(xué)。
由Ferdinand P. Beer等編寫的Mechanics of Materials（Fourth Edition in SI Units）采用以應(yīng)力為鋪路石，以構(gòu)件變形為主線的體系，符合國內(nèi)教學(xué)改革的主流方向。教材結(jié)構(gòu)清晰、論述嚴(yán)謹(jǐn)、圖文并茂，同時(shí)還附有少量計(jì)算題目。該教材將桿件設(shè)計(jì)概念貫穿全書，廣泛采用三維插圖，有助于揭示力學(xué)原理、貼近工程實(shí)際以及培養(yǎng)學(xué)生分析問題、解決問題的能力。書中每章都分別針對基本概念和原理設(shè)置多個(gè)“Examples and Sample Problems”和“Homework Problem Sets”,每章后面還設(shè)有“Chapter Review and Summary”、“Review Problems”和“Computer Problems”，具有突出“三基”，循序漸進(jìn)，由簡到繁的特色。教材中一些專題性的內(nèi)容是獨(dú)立的，便于刪減。
經(jīng)過認(rèn)真對比研究，我們選擇了該書作為基礎(chǔ)進(jìn)行縮編�？s編后的教材保留了原版教材的特色，同時(shí)結(jié)合國內(nèi)雙語教學(xué)的需要適當(dāng)?shù)貏h減了一些內(nèi)容，如去掉了塑性變形（除軸向拉伸與壓縮變形以外）等國內(nèi)材料力學(xué)教材都不講授或很少講授的內(nèi)容，精選了部分例題、習(xí)題講解和習(xí)題等。
縮編工作由上海師范大學(xué)建筑工程學(xué)院工程力學(xué)部張燕主持。其中張燕改編第4章、第9章、第10章和全書的習(xí)題； 王紅囡改編第5~8章和附錄，并負(fù)責(zé)全書統(tǒng)稿工作； 彭麗改編第1~3章內(nèi)容。特別感謝趙一鳴同學(xué)為教材錄入和排版所做的大量工作，以及縮編教材的倡導(dǎo)人王增忠副院長對于本工作給予的大力支持。查瓏瓏?yán)蠋熞矊Ρ緯鞒隽素暙I(xiàn)。
本教材適合于機(jī)械類和土木類等專業(yè)的本科生70~90學(xué)時(shí)的材料力學(xué)雙語教學(xué)，不足70學(xué)時(shí)應(yīng)酌情刪減。由于時(shí)間和編者的水平限制，書中難免疏誤，敬請讀者批評指正。
1
Introduction—Concept of Stress
1
1.1Introduction2
1.2Stresses in the Members of a Structure2
1.3Analysis and Design3
1.4Axial Loading; Normal Stress4
1.5Shearing Stress7
1.6Bearing Stress in Connections9
1.7Application to the Analysis and Design of Simple Structures9
Problems 1.112
1.8Stress on an Oblique Plane under Axial Loading14
1.9Stress under General Loading Conditions; Components of Stress15
1.10Design Considerations18
Problems 1.222
Review and Summary for Chapter 124
Review Problems26
Computer Problems27
2
Stress and Strain—Axial Loading
29
2.1Introduction30
2.2Normal Strain under Axial Loading31
2.3StressStrain Diagram32
2.4Hooke’s Law; Modulus of Elasticity37
2.5Elastic versus Plastic Behavior of a Material38
2.6Repeated Loadings; Fatigue40
2.7Deformations of Members under Axial Loading42
Problems 2.143
2.8Statically Indeterminate Problems45
Problems 2.247
2.9Poissons Ratio48
2.10Multiaxial Loading; Generalized Hookes Law48
2.11Shearing Strain50
Problems 2.351
2.12Stress and Strain Distribution under Axial Loading; SaintVenants Principle52
2.13Stress Concentrations54
Problems 2.456
Review and Summary for Chapter 256
Review Problems61
Computer Problems62
3
Torsion
63
3.1Introduction64
3.2Preliminary Discussion of the Stresses In a Shaft66
3.3Deformations in a Circular Shaft68
3.4Stresses in the Elastic Range71
Problems 3.174
3.5Angle of Twist in the Elastic Range77
3.6Statically Indeterminate Shafts79
Problems 3.281
3.7Design of Transmission Shafts84
3.8Stress Concentrations in Circular Shafts85
Problems 3.386
Review and Summary for Chapter 387
Review Problems89
Computer Problems91
4
Pure Bending
92
4.1Introduction93
4.2Symmetric Member in Pure Bending95
4.3Deformations in a Symmetric Member in Pure Bending96
4.4Stresses and Deformations in the Elastic Range99
4.5Deformations in a Transverse Cross Section103
Problems 4.1107
4.6Bending of Members Made of Several Materials109
4.7Stress Concentrations113
Problems 4.2117
4.8Eccentric Axial Loading in a Plane of Symmetry118
Problems 4.3122
4.9Unsymmetric Bending123
4.10General Case of Eccentric Axial Loading129
Problems 4.4132
Review and Summary for Chapter 4133
Review Problems137
Computer Problems138
5
Analysis and Design of Beams for Bending
139
5.1Introduction140
5.2Shear and BendingMoment Diagrams142
Problems 5.1148
5.3Relations among Load, Shear, and Bending Moment151
Problems 5.2156
5.4Design of Prismatic Beams for Bending157
Problems 5.3160
Review and Summary for Chapter 5162
Review Problems165
Computer Problems165
6
Shearing Stresses in Beams
166
6.1Introduction167
6.2Shear on the Horizontal Face of a Beam Element168
6.3Determination of the Shearing Stresses in a Beam171
6.4Shearing Stresses τxy in Common Types of Beams172
Problems 6.1174
Review and Summary for Chapter 6176
Review Problems177
Computer Problems178
7
Transformations of Stress and Strain
179
7.1Introduction180
7.2Transformation of Plane Stress181
7.3Principal Stresses: Maximum Shearing Stress183
Problems 7.1189
7.4Mohr’s Circle for Plane Stress190
Problems 7.2198
7.5General State of Stress198
7.6Application of Mohr’s Circle to the ThreeDimensional Analysis of Stress200
Problems 7.3203
Review and Summary for Chapter 7205
Review Problems207
Computer Problems208
8
Principal Stresses Under a Given Loading
209
8.1Introduction210
8.2Principal Stresses in a Beam211
8.3Design of Transmission Shafts214
Problems 8.1216
8.4Stresses under Combined Loadings218
Problems 8.2219
Review and Summary for Chapter 8222
Review Problems224
Computer Problems225
9
Deflection of Beams
226
9.1Introduction227
9.2Deformation of a Beam Under Transverse Loading228
9.3Equation of the Elastic Curve229
*9.4Direct Determination of the Elastic Curve from the Load Distribution234
9.5Statically Indeterminate Beams236
Problems 9.1241
*9.6Using Singularity Functions to Determine the Slope and Deflection of a Beam243
Problems 9.2247
9.7Method of Superposition247
9.8Application of Superposition to Statically Indeterminate Beams249
Problems 9.3254
Review and Summary for Chapter 9256
Review Problems260
Computer Problems261
10
Columns
262
10.1Introduction263
10.2Stability of Structures263
10.3Eulers Formula for PinEnded Columns266
10.4Extension of Eulers Formula to Columns with Other End Conditions269
Problems 10.1275
10.5Design of Columns Under a Centric Load277
Problems 10.2287
10.6Design of Columns under an Eccentric Load290
Problems 10.3295
Review and Summary for Chapter 10296
Review Problems297
Computer Problems298
Appendices
299
Appendix AMoments of Areas300
Appendix BTypical Properties of Selected Materials Used in Engineering310
Appendix CProperties of RolledSteel Shapes312
Appendix DBeam Deflections and Slopes318
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