how to add spring/damping effect to connect two moving body
 

Dear FoAMers,

https://plus.google.com/u/0/photos/1...34138397944034

I would like to connect these two moving parts together by a spring , how can I achieve it in OPENFOAM?

Your suggestion will be appreciated.

Regards,
T

Hi Teemo,

I my version of OF (1.6-ext) you can find the following constraints for mesh motion here:

The linear spring seems like a good choice for the initial investigation.

I have no idea on how they are working, though I know that the are also present in the more recent releases of OF.

Good luck,

Niels

Thanks Niels,

I will give it a try.

Regards,
T

hello again,

I have looked into the linear spring file and for its setup:
//- Anchor point, where the spring is attached to an immovable object
point anchor_;

//- Reference point of attachment to the solid body
point refAttachmentPt_;

//- Spring stiffness coefficient (N/m)
scalar stiffness_;

//- Damping coefficient (Ns/m)
scalar damping_;

//- Rest length - length of spring when no forces are applied to it
scalar restLength_;
it seems that one end of the spring should be fixed, but for my case, i need both ends move with the floaters, any idea?

Regards,
T

Hi Teemo,

I am currently facing similar situation and would like to know whether you had any luck on it?

Regards
tyoung