How can I simulate a fixed orifice? (SimMechanics)

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I am doing simulation of a Oleo pnuematic suspension for a mining truck.. I want to give flow and pressure (Hydraulic fluid) as input for the fixed orifice but i dont know how.. Also I want to do the simulation in similar way for the clearance between suspension and the piston.. Please help me..
  4 Comments
Walter Roberson
Walter Roberson on 16 Nov 2013
Sorry I do not have experience with SimMechanics myself.

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Answers (1)

Guy Rouleau
Guy Rouleau on 17 Nov 2013
If this is correct: "My exact requirement is finding out the pressure drop and flow across the fixed orifice for various forces on the Hydraulic fluid."
Then connect a Pressure Sensor in parallel to the orifice and a Flow Sensor in series with the orifice.
You cannot specify both pressure and flow... those are complementary. With a source, you specify one and SimHydraulics computes the other.For example with a Flow Source, Simscape ensures that the specified flow is applied by generating whatever pressure to make that happen.
  1 Comment
Sujith Sundararajan
Sujith Sundararajan on 18 Nov 2013
Hi Guy
I appreciate your response.. I will definitely try the method you said.. One more thing is Do you why is it necessary to use the translational spring and damper at the R port of a single acting hydraulic cylinder???.. I am not sure about this..
Thanks

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