I am modelling bonded interfaces using cohesive elements and trying to define the values of Knn, Kss and Ktt for uncoupled traction separation behaviour.
My question is that how to determine the values of these terms, i.e. Knn, Kss and Ktt. Can someone please let me know on how to calculate these terms or any other information that relate to finding or working of such terms.
Many thanks in advance for any kind help