Previous:
Chapter 5 Overview
A
material is isotropic if its mechanical properties are independent of direction
Isotropy
means
Note
that the isotropy of a tensor is equivalent to the isotropy of a material
defined by the tensor.
Most
general from of
(Fourth
order) is a function
Thus
for isotropic material
For
are called Lame's constants.
is
also the shear modulus of the material (sometimes designated as G).
Next: 5.4
Relationships Between 
,
,
,
and
11/06/01 0:21:50