With reference to the discussion Concrete-Rod-Contact, I would like to ask following queries.
1. I used Frictional Stress in Contact Tools under the Solution to calculate the Frictional Stress value. The resultant value given by the simulation is almost near to the experimental value of 3.6 Mpa but I am getting the values in negative. Any suggestion to sort out this problem or which step(s) am I missing here?
2. With in the CZM I input the maximum Eq. tangential contact stress value from the experimental results. But every time the value given by the Force Reaction is the lower value instead of the higher one. I have marked the graph for clarification.
In addition, ideally the graph should go like the shape shown in the image with a maximum load point (point Pa in graph) (which I am not getting in simulation, I am only having the lower load point of Pb), then decrease in load and then rise or fall again.
3. Is it possible to measure the contact debonding energy in ansys? I tried using Strain Energy but the resultant values are too low (5.42 e-6 mJ).