Hey Mike,

I'm trying to plot the load vs displacement graph and want to compare it with the experimental one that I have posted above. In the exp, the load at which the fibre breaks is around 56-57mN. Now in experiment I gave separation distance based debonding in CZM and gave max tangential slip at the completion of debonding according to the experiment graph (the bond breaks at 57mN , so took displacement of that point which is 0.7um). How do i calculate max tangential contact stress? is F/A the correct way? (F being 56mN and Area of the fibre surface on which I applied displacement).

Because the result which I'm getting now, the force at which the fibre breaks is 7-8 times higher than the experiment one.