Question

Theoretical value of Poisson's ratio for homogeneous isotropic material lies between
A) -1 to 0.5
B) -0.5 to 1
C) 0 to 0.5
D) -1 to 1​

Answer 1

A correct answer is an option (a) between −1.0 and +0.5

Poisson's ratio for homogeneous isotropic material:

• Because Young's modulus, shear modulus, and bulk modulus must all have positive values, the Poisson ratio of a stable, isotropic, linear elastic material must be between 1.0 and +0.5.

• Poisson's ratio values for the majority of materials fall between 0.0 and 0.5.

How would Poisson's ratio vary in anisotropic homogenous material?

The Poisson's ratio's permissible range is widened in anisotropic solids; values ranging from minus infinity to plus infinity are possible.

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