## Physical Properties of Crystals |

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Page 102

The y's are often called the '

simply the '

additional factors of 2, they are not equal to the off-diagonal components of the

strain ...

The y's are often called the '

**shear**components of strain', the '**shear**strains', orsimply the '

**shears**', but it is to be clearly understood that, on account of theadditional factors of 2, they are not equal to the off-diagonal components of the

strain ...

Page 103

Plane strain and pure

be in a state of plane strain. Pure

strain tensor for a pure

to ...

Plane strain and pure

**shear**. When one principal strain is zero a body is said tobe in a state of plane strain. Pure

**shear**is a special case of plane strain. Thestrain tensor for a pure

**shear**about Oz's has the form 0 e 0 - e 0 0 0 0 0 Referredto ...

Page 321

Strain, 9.3–109. and crystal symmetry, 104. ellipsoid, 101–2. energy, 136–7.

engineering strains, 102. one-dimensional, 93. plane strain, 103. principal axes

of, 100. principal strains, 100. pure

Strain, 9.3–109. and crystal symmetry, 104. ellipsoid, 101–2. energy, 136–7.

engineering strains, 102. one-dimensional, 93. plane strain, 103. principal axes

of, 100. principal strains, 100. pure

**shear**, 103. quadric, 100–2.**shear**strain, 102.### What people are saying - Write a review

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### Contents

THE GROUND WORK OF CRYSTAL PHYSICS | 3 |

Summary | 29 |

EQUILIBRIUM PROPERTIES | 45 |

47 other sections not shown

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement elastic compliances electric field electro-optical electro-optical effect ellipsoid equal equation example expression follows forces given gives grad heat flow Hence indicatrix isothermal isotropic magnetic magnitude matrix notation measured moduli Mohr circle monoclinic number of independent Onsager's Principle optic axis optical activity orientation parallel permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric effect quadric radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor shear shown shows strain stress symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values wave normal wave surface written zero