Hi all,
after months I have retaken in hand the analysis of a spring with the FEM.
Now at work we have introduced the Creo 3 for fem analysis, so I've used this.
The free length of the spring is 76.55 mm; it works almost all compressed, 22 mm, and goes at 51 mm when it don't work, remaining preloaded.
For my analysis I just want see, in the first instance, what happen imposing not a force but a displacement of 10-20-40mm.
Is there something wrong in my analysis?
I've also used a elasto-plastic material but I think is not correct becouse a spring should work always in elastic mode.
I've insert also two contact surface because I had a compenetration of material, but in this manner tha analysis fails.
thanks for help.
Regards.