Question

The generalised Hooke’s law equation connecting the strain to stress contains ___________ elastic constants.

(a) 40

(b) 36

(c) 39

(d) 38

This question was posed to me during an online interview.

This interesting question is from Generalised Hooke’s Law in portion Elements of Elasticity of Geotechnical Engineering I

Answer 1

Correct choice is (b) 36

The explanation is: The generalised Hooke’s law equation connecting the strain to stress contains 36 elastic constants. These elastic constants are independent of the stress components at a point.