I have two plates and in between the 3rd and 4th layers I have connected them with a) tie constraints and b) surface based cohesion. My question is, should the values of natural frequency be the same for both cases? I am having trouble getting similiar results for any input values of kss,knn and ktt attempted.
I am trying to investigate cohesive behaviour on the natural frequency of the structure.
Can anyone explain what I am doing wrong?
Cheers,
Callum