## Mechanical metallurgy |

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Page 22

These planes are called the principal planes, and the stresses normal to these

planes are the

two

3) ...

These planes are called the principal planes, and the stresses normal to these

planes are the

**principal stresses**. For two-dimensional plane stress there will betwo

**principal stresses**<ri and ct2 which occur at angles that are 90° apart (Fig. 2-3) ...

Page 24

Note that it acts on a plane for which 6 = ir/4 (26 = ir/2 on Mohr's circle); i.e., the

plane on which rmx acts bisects the angle between the

circle can also be used to determine the stresses acting on any oblique plane

mm ...

Note that it acts on a plane for which 6 = ir/4 (26 = ir/2 on Mohr's circle); i.e., the

plane on which rmx acts bisects the angle between the

**principal stresses**. Mohr'scircle can also be used to determine the stresses acting on any oblique plane

mm ...

Page 27

Since according to convention <r\ is the algebraically greatest principal normal

stress and <r3 is the algebraically smallest

value of shear stress and it is called the maximum shear stress Trnax f! — <T% (2

-15) ...

Since according to convention <r\ is the algebraically greatest principal normal

stress and <r3 is the algebraically smallest

**principal stress**, r2 has the largestvalue of shear stress and it is called the maximum shear stress Trnax f! — <T% (2

-15) ...

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### Contents

Introduction | 3 |

Stress and Strain Relationships for Elastic Behavior | 17 |

Elements of the Theory of Plasticity | 54 |

Copyright | |

21 other sections not shown

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### Common terms and phrases

alloys angle annealing ASTM axis behavior bending billet brittle fracture Burgers vector cent compressive constant crack creep rate cycles decrease determined diameter direction dislocation line distribution drawing ductile edge dislocation effect elastic equation extrusion factor failure fatigue limit flow curve flow stress force forging forming friction given grain boundaries hardness high-temperature increase indentation lattice length load longitudinal mandrel martensite material maximum measured mechanical metallurgical Metals Park method modulus notch obtained occurs orientation particles plastic deformation pressure principal stresses Proc produced properties punch quenched radius ratio region relationship residual stresses rolling screw dislocations shear stress sheet shown in Fig shows single crystals slip plane Society for Metals specimen steel strain energy strain hardening strain rate stress-strain curve structure surface temper tensile strength tensile stress tension theory thickness tion torsion Trans transition temperature tube usually yield strength yield stress