.Derive results equivalent to for the case of hydrostatic compression
σ11 =σ22 =σ33 = −p, σ12 =σ23 =σ31 = 0, wherepis pressure.
.Relative to axes(x, y, z), letu=w= 0 andv=kz, wherekis a constant. Show that
this case (simple shear) differs from that of pure shear by a rigid-body rotation.
.The volumetric strain or dilatationeis equal to the strain invariantJ1.
What is the dilatation for the cases of (a) simple tension and (b) pure shear?
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