TAILIEUCHUNG - Mechanical Engineer´s Handbook P11

CHAPTER 10 STRESS ANALYSIS Franklin E. Fisher Mechanical Engineering Department Loyola Marymount University Los Angeles, California and Senior Staff Engineer Hughes Aircraft Company (Retired) STRESSES, STRAINS, STRESS INTENSITY Fundamental Definitions Work and Resilience DISCONTINUITIES, STRESS CONCENTRATION COMBINED STRESSES CREEP FATIGUE Modes of Failure 191 191 197 199 199 203 205 206 COLUMNS Definitions Theory Wooden Columns Steel Columns CYLINDERS, SPHERES, AND PLATES Thin Cylinders and Spheres under Internal Pressure Thick Cylinders and Spheres Plates Trunnion Socket Action CONTACT STRESSES ROTATING ELEMENTS Shafts Disks Blades. | CHAPTER 10 STRESS ANALYSIS Franklin E. Fisher Mechanical Engineering Department Loyola Marymount University Los Angeles California and Senior Staff Engineer Hughes Aircraft Company Retired STRESSES STRAINS STRESS INTENSITY 191 Fundamental Definitions 191 Work and Resilience 197 DISCONTINUITIES STRESS CONCENTRATION 199 COMBINED STRESSES 199 CREEP 203 FATIGUE 205 Modes of Failure 206 BEAMS 207 Theory of Flexure 207 Design of Beams 212 Continuous Beams 217 Curved Beams 220 Impact Stresses in Bars and Beams 220 Steady and Impulsive Vibratory Stresses 224 SHAFTS BENDING AND TORSION 224 Definitions 224 Determination of Torsional Stresses in Shafts 225 Bending and Torsional Stresses 229 COLUMNS 229 Definitions 229 Theory 230 Wooden Columns 232 Steel Columns 232 CYLINDERS SPHERES AND PLATES 235 Thin Cylinders and Spheres under Internal Pressure 235 Thick Cylinders and Spheres 235 Plates 237 Trunnion 237 Socket Action 237 CONTACT STRESSES 242 ROTATING ELEMENTS 244 Shafts 244 Disks 244 Blades 244 DESIGN SOLUTION SOURCES AND GUIDELINES 244 Computers 244 Testing 245 STRESSES STRAINS STRESS INTENSITY Fundamental Definitions Static Stresses Total stress on a section mn through a loaded body is the resultant force 5 exerted by one part of the body on the other part in order to maintain in equilibrium the external loads acting on the Revised from Chapter 8 Kent s Mechanical Engineer s Handbook 12th ed. by John M. Lessells and G. S. Cherniak. Mechanical Engineers Handbook 2nd ed. Edited by Myer Kutz. ISBN 0-471-13007-9 1998 John Wiley Sons Inc. 191 192 STRESS ANALYSIS part. Thus in Figs. and the total stress on section mn due to the external load P is S. The units in which it is expressed are those of load .

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