Non Linear Model Definition

[Anonymous]

Hi All,

I would like to model a pin (nodal) support as a linear spring that can only take downwards force but cannot resist uplift force. Some people also call this kind of supports "compression only" spring supports. I am failing to define a function in "supports">"new support">"nonlinear">"definition of non-linear model"> "parameters"> "Type: Function".

Can anyone explain step-by-step how this is done in Robot?

Model and sketch attached. In the model, if you will, please assign the "compression only" spring support at any node.

Thanks,

Alex

[Rafacascudo · Accepted solution]

no need to create a nonlinear support model. Just use the uplift option on the rigid tab

[Anonymous]

@Rafacascudo 

Thank you very much!

I was not aware that the support will have properties from both "Rigid" tab and "Elastic" tab at the same time. I thought the properties would be either rigid or elastic but not a combination of the two.

This solves my problem.

Thanks,
Alex