Ansys Learning Forum Forums Discuss Simulation General Mechanical How to calculate eigen frequencies using analytical approach? Reply To: How to calculate eigen frequencies using analytical approach?

Rameez_ul_Haq
Subscriber
,since you have already mentioned about the Hooke's Law in this thread. I will try to pitch in a question here.
Since the general Stress-Strain relation can be derived from the Hooke's Law (which actually relates the force to displacement with a constant of proprtionality i.e. stiffness or K), so this general Stress-Strain relation should also hold if I am considering a change in stiffness of the structure during deformation of it? [For instance, a fishing rod which encounters a change in its stiffness when it deforms].