simulate Check valve in 2D

songxguan · April 17, 2009, 08:36

Hello everyone,

I'm doing a anlaysis about 2D check valve (radius is 'R'), which has a spring to support the disc, and is axi-symmetical.

I wish to solve it in 2D, and the simply way is to extrude one layer mesh(thickness is 't') and then do the so-called 2D analysis, but there is a question, when i do like this, how should I define the spring stiffness 'K'? it's same as before
or is should be calculated like this: ((t*R)/(Pi*R^2))*K
because the original force on the ball is P*(Pi*R^2), but now is just P*(t*R).

Is there anybody can help me ?
Thanks in advance.

Martijn · April 18, 2009, 13:06

Yes ((t*R)/(Pi*R^2))*K=K2D is probably the best solution if you want to simulate the valve in 2D.
But why don't you run the simulation as an axi-symmetrical problem?

April 17, 2009, 08:36	simulate Check valve in 2D	#1
songxguan New Member Xue-Guan Song Join Date: Mar 2009 Location: Busan, Korea Posts: 14 Rep Power: 18	Hello everyone, I'm doing a anlaysis about 2D check valve (radius is 'R'), which has a spring to support the disc, and is axi-symmetical. I wish to solve it in 2D, and the simply way is to extrude one layer mesh(thickness is 't') and then do the so-called 2D analysis, but there is a question, when i do like this, how should I define the spring stiffness 'K'? it's same as before or is should be calculated like this: ((tR)/(PiR^2))K because the original force on the ball is P(PiR^2), but now is just P(t*R). Is there anybody can help me ? Thanks in advance.

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April 18, 2009, 13:06		#2
Martijn New Member Martijn Join Date: Mar 2009 Posts: 14 Rep Power: 18	Yes ((tR)/(PiR^2))*K=K2D is probably the best solution if you want to simulate the valve in 2D. But why don't you run the simulation as an axi-symmetrical problem?