I know how to do the fatigue analysis in metal material using the Goodman diagram, but I don´t know do it in metal material cable.
I don´t know how to do the fatigue analysis in composite material, so please if you know how, can you send me something like a note explianing me how I can do it?
I think what is trying to be said here is that you may approach the problem as if it were metallic. In other words, you would get the loads from the FEM and do a fatigue analysis via classical solution (outside of the FEM). In that sense, what you do in the FEM does not change just because the material did.
Now, on the other hand, if you asking the seemingly more important question of how to do fatigue analysis of a composite, you would not want to ask that in the finite element forum.
to analysis this problem by FEM:
1- I have to simulate the cable as a rod with a lot of wire beside? or just a rod with the Kevlar property?
2- I have to simulate the contact between the wires?
When I have the stress by FEM, I have to estimate the material life as the classical way?
The working life of cable is not driven solely by fatigue, but also by the fretting/scuffing damage due to motion of the strands against one another during flexure and axial cyclic loads, and due to the radial distortions when wound over pulleys.
Dear rb1957,
The cyclic load here is the weight (0 to weight).
But as btrueblood said, there is a fretting damage.
I think that i will simulate 3D rod and i will have the stress by abaqus, after that i will try to calculate the life.