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CFAsmo
Posts: 14
Registered: ‎03-13-2013
Accepted Solution

Force as boundary condition

105 Views, 2 Replies
09-06-2013 02:43 AM

Hello, 

 

Now I have a question for the dynamic simulation. Is this to det a spring force in the dynamic simulation that works against hydraulic pressure? In the edge terms it does not seem to be possible, there is only "pressure" as definition there.

 

I'm grateful for every help.

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wildej
Posts: 728
Registered: ‎08-25-2011

Re: Force as boundary condition

09-08-2013 11:46 PM in reply to: CFAsmo

Hi,

 

If I understand you correctly you should have an internal part (a poppet of valve) that is moving? To this you could assign a Motion condition, using the Motion thumbnail at the top. Here you could set it to move linearly and also assign a spring force to it. This would act behind the valve and we would see motion of it as the hydrostatic forces act also.

 

I suggest you refer to the help once you are in the spring setup, it gives some useful advice on the direction (this sign) that the forces must be given.

 

 

Kind regards,

Jon



Jon Wilde
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Contributor
CFAsmo
Posts: 14
Registered: ‎03-13-2013

Re: Force as boundary condition

09-10-2013 01:42 AM in reply to: wildej

Hello,

 

Great thanks to your reply. I've searched in wrong options but now i found it.  The "Force" property to choose is to be done directly on the valve in motion-conditions. 

 

Very nice! 

 

cheers 

 

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