If E, G, K, and μ represent the elastic modulus, shear modulus, bulk modulus, and Poisson’s ratio respectively of a linear elastic, isotropic and homogeneous material, and if you need to express the stress-strain relationships completely for this material, at least:
1
All the four must be known
2
E, G and μ must be known
3
E, K and μ must be known
4
any two of the four must be known