Displays the product of the ratio of the axial to the hoop elastic modulus and Poisson's ratio, which relates the strain in the axial direction to a stress in the hoop direction.
Ea
Elastic modulus in the axial direction.
Eh
Elastic modulus in the hoop direction.
Vh/a
Poisson's ratio, nh/a, relating the strain in the axial direction due to a stress in the hoop direction.