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| موضوع: كتاب Mechanical Engineering Principles الأربعاء 24 يوليو 2019, 10:00 pm | |
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أخوانى فى الله أحضرت لكم كتاب Mechanical Engineering Principles Third Edition John Bird BSc(Hons), CEng, CMath, CSci, FIMA, FIET, FCollT Carl Ross BSc(Hons), PhD, DSc, CEng, FRINA, MSNAME
و المحتوى كما يلي :
Contents Preface ix Part One Revision of Mathematics 1 1 Revisionary mathematics 3 1.1 Introduction 3 1.2 Radians and degrees 4 1.3 Measurement of angles 4 1.4 Triangle calculations 5 1.5 Brackets 8 1.6 Fractions 8 1.7 Percentages 10 1.8 Laws of indices 12 1.9 Simultaneous equations 14 Revision Test 1 Revisionary mathematics 18 2 Further revisionary mathematics 20 2.1 Units, prefixes and engineering notation 21 2.2 Metric – US/Imperial conversions 24 2.3 Straight line graphs 28 2.4 Gradients, intercepts and equation of a graph 30 2.5 Practical straight line graphs 32 2.6 Introduction to calculus 34 2.7 Basic differentiation revision 34 2.8 Revision of integration 36 2.9 Definite integrals 38 2.10 Simple vector analysis 39 Revision Test 2 Further revisionary mathematics 43 Part Two Statics and Strength of Materials 45 3 The effects of forces on materials 47 3.1 Introduction 48 3.2 Tensile force 48 3.3 Compressive force 48 3.4 Shear force 48 3.5 Stress 49 3.6 Strain 50 3.7 Elasticity, limit of proportionality and elastic limit 52 3.8 Hooke’s law 53 3.9 Ductility, brittleness and malleability 57 3.10 Modulus of rigidity 57 3.11 Thermal strain 57 3.12 Compound bars 58 4 Tensile testing 64 4.1 The tensile test 64 4.2 Worked problems on tensile testing 66 4.3 Further worked problems on tensile testing 67 4.4 Proof stress 69 5 Forces acting at a point 71 5.1 Scalar and vector quantities 71 5.2 Centre of gravity and equilibrium 72 5.3 Forces 72 5.4 The resultant of two coplanar forces 73 5.5 Triangle of forces method 74 5.6 The parallelogram of forces method 75 5.7 Resultant of coplanar forces by calculation 76 5.8 Resultant of more than two coplanar forces 76 5.9 Coplanar forces in equilibrium 78 5.10 Resolution of forces 80 5.11 Summary 83 6 Simply supported beams 86 6.1 The moment of a force 86 6.2 Equilibrium and the principle of moments 87 6.3 Simply supported beams having point loads 89 6.4 Simply supported beams with couples 93 Revision Test 3 Forces, tensile testing and beams 97 7 Forces in structures 98 7.1 Introduction 98 7.2 Worked problems on mechanisms and pin-jointed trusses 99 7.3 Graphical method 100 7.4 Method of joints (a mathematical method) 104 7.5 The method of sections (a mathematical method) 109 8 Bending moment and shear force diagrams 112 8.1 Bending moment (M) 112vi Contents 8.2 Shearing force (F) 113 8.3 Worked problems on bending moment and shearing force diagrams 113 8.4 Uniformly distributed loads 122 9 First and second moments of area 127 9.1 Centroids 127 9.2 The first moment of area 128 9.3 Centroid of area between a curve and the x-axis 128 9.4 Centroid of area between a curve and the y-axis 128 9.5 Worked problems on centroids of simple shapes 129 9.6 Further worked problems on centroids of simple shapes 130 9.7 Second moments of area of regular sections 131 9.8 Second moment of area for ‘built-up’ sections 138 Revision Test 4 Forces in structures, bending moment and shear force diagrams, and second moments of area 144 10 Bending of beams 145 10.1 Introduction 145 10.2 To prove that ? = = y M I E R 146 10.3 Worked problems on the bending of beams 147 11 Torque 151 11.1 Couple and torque 151 11.2 Work done and power transmitted by a constant torque 152 11.3 Kinetic energy and moment of inertia 154 11.4 Power transmission and efficiency 157 12 Twisting of shafts 161 12.1 To prove that ? ? = = r T J G L 161 12.2 Worked problems on the twisting of shafts 163 Revision Test 5 Bending of beams, torque and twisting of shafts 167 Part Three Dynamics 169 13 Linear and angular motion 171 13.1 The radian 171 13.2 Linear and angular velocity 171 13.3 Linear and angular acceleration 173 13.4 Further equations of motion 174 13.5 Relative velocity 176 14 Linear momentum and impulse 180 14.1 Linear momentum 180 14.2 Impulse and impulsive forces 183 15 Force, mass and acceleration 188 15.1 Introduction 188 15.2 Newton’s laws of motion 189 15.3 Centripetal acceleration 192 15.4 Rotation of a rigid body about a fixed axis 193 15.5 Moment of inertia (I) 194 16 Work, energy and power 197 16.1 Work 197 16.2 Energy 201 16.3 Power 202 16.4 Potential and kinetic energy 205 16.5 Kinetic energy of rotation 208 Revision Test 6 Linear and angular motion, momentum and impulse, force, mass and acceleration, work, energy and power 211 17 Friction 212 17.1 Introduction to friction 212 17.2 Coefficient of friction 213 17.3 Applications of friction 214 17.4 Friction on an inclined plane 215 17.5 Motion up a plane with the pulling force P parallel to the plane 215 17.6 Motion down a plane with the pulling force P parallel to the plane 216 17.7 Motion up a plane due to a horizontal force P 216 17.8 The efficiency of a screw jack 219 18 Motion in a circle 223 18.1 Introduction 223 18.2 Motion on a curved banked track 225 18.3 Conical pendulum 226 18.4 Motion in a vertical circle 228 18.5 Centrifugal clutch 230 19 Simple harmonic motion 232 19.1 Introduction to simple harmonic motion (SHM) 232 19.2 The spring-mass system 233 19.3 The simple pendulum 235 19.4 The compound pendulum 236 19.5 Torsional vibrations 237 20 Simple machines 239 20.1 Machines 239Contents vii 20.2 Force ratio, movement ratio and efficiency 239 20.3 Pulleys 241 20.4 The screw-jack 243 20.5 Gear trains 243 20.6 Levers 245 Revision Test 7 Friction, motion in a circle, simple harmonic motion and simple machines 249 Part Four Heat Transfer and Fluid Mechanics 251 21 Heat energy and transfer 253 21.1 Introduction 253 21.2 The measurement of temperature 254 21.3 Specific heat capacity 255 21.4 Change of state 256 21.5 Latent heats of fusion and vaporisation 257 21.6 A simple refrigerator 259 21.7 Conduction, convection and radiation 259 21.8 Vacuum flask 260 21.9 Use of insulation in conserving fuel 260 22 Thermal expansion 263 22.1 Introduction 263 22.2 Practical applications of thermal expansion 264 22.3 Expansion and contraction of water 264 22.4 Coefficient of linear expansion 264 22.5 Coefficient of superficial expansion 266 22.6 Coefficient of cubic expansion 267 Revision Test 8 Heat energy and transfer, and thermal expansion 271 23 Hydrostatics 272 23.1 Pressure 272 23.2 Fluid pressure 274 23.3 Atmospheric pressure 275 23.4 Archimedes’ principle 276 23.5 Measurement of pressure 278 23.6 Barometers 278 23.7 Absolute and gauge pressure 280 23.8 The manometer 280 23.9 The Bourdon pressure gauge 281 23.10 Vacuum gauges 282 23.11 Hydrostatic pressure on submerged surfaces 282 23.12 Hydrostatic thrust on curved surfaces 284 23.13 Buoyancy 284 23.14 The stability of floating bodies 284 24 Fluid flow 290 24.1 Differential pressure flowmeters 290 24.2 Orifice plate 291 24.3 Venturi tube 292 24.4 Flow nozzle 292 24.5 Pitot-static tube 292 24.6 Mechanical flowmeters 293 24.7 Deflecting vane flowmeter 293 24.8 Turbine type meters 294 24.9 Float and tapered-tube meter 294 24.10 Electromagnetic flowmeter 295 24.11 Hot-wire anemometer 296 24.12 Choice of flowmeter 296 24.13 Equation of continuity 296 24.14 Bernoulli’s equation 297 24.15 Impact of a jet on a stationary plate 298 25 Ideal gas laws 301 25.1 Boyle’s law 301 25.2 Charles’ law 303 25.3 The pressure or Gay-Lussac’s law 304 25.4 Dalton’s law of partial pressure 305 25.5 Characteristic gas equation 306 25.6 Worked problems on the characteristic gas equation 306 25.7 Further worked problems on the characteristic gas equation 308 26 The measurement of temperature 312 26.1 Liquid-in-glass thermometer 312 26.2 Thermocouples 314 26.3 Resistance thermometers 315 26.4 Thermistors 317 26.5 Pyrometers 317 26.6 Temperature indicating paints and crayons 319 26.7 Bimetallic thermometers 319 26.8 Mercury-in-steel thermometer 319 26.9 Gas thermometers 319 26.10 Choice of measuring devices 320 Revision Test 9 Hydrostatics, fluid flow, gas laws and temperature measurement 322 A list of formulae for mechanical engineering principles 323 Metric to Imperial conversions and vice versa 328 Greek alphabet 329 Glossary of terms 330 Answers to multiple-choice questions 335 Index 33
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