Sum of forces on model edge

Hey

I'm having problems and I hope you guys can help me out.

I'm looking for a way to sum up each force in a specific direction for the mesh nodes on a given edge. To refraise, I would like to find the sum of forces in the y-direction in each nodal point placed on a chosen edge.
The forces will be used to calculate an effective Young's Modulus and an effective Poisson's ratio. The results are to be compared to different analytical models from basic continuum mechanics.

Best regards

Mikael