Pile Moment Zig zag

[Victor_Huang1]

Hi All, 

I have modelled a pile foundation with different spring stiffness. The bending moment appeared to be zig zagged, I am expecting a smooth transition rather than this. 

Any idea why??

Regards;

Victor

[DennisVDijk · Accepted solution]

Hello Victor,

You should use more spring supports or you should use Bar On Elastic Ground. For each ground layer you can model a different elastic spring on the pile.

see this thread:

https://forums.autodesk.com/t5/robot-structural-analysis-forum/pile-with-elastic-propreties/m-p/4321...