Can this version of pneumatic piston sustain a certain load on its own?

AI Thread Summary
A freshman design student is exploring the functionality of a pneumatic piston in a project, questioning whether a pressurized piston can maintain its position when both chambers are joined. Responses indicate that if the pressure in both chambers equalizes, the piston will move according to the Ideal Gas Law, and its position may not be sustained without additional force. The discussion highlights the piston’s behavior likened to a spring, emphasizing the relationship between the piston area and the enclosed volume. The concept presented resembles a regenerative hydraulic circuit, suggesting a deeper understanding of pneumatic systems is beneficial. Overall, the student is encouraged to clarify their thought process and gain more knowledge about pneumatics.
Polar24
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I designed a micro pneumatic piston that can stay in a position as long as no extra force is applied
Hey guys I am a freshman design student and I have been doing a project in which I am using a pneumatic piston that I designed, I don't have depth knowledge about pneumatics but I tried something. I am using simple concept for this if the cylinder is already pressurized and I am able to join both chambers, do piston is going to sustain its position?
IMG_20200625_223711355.jpg
I need help in this I am sharing my design with this
 
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Polar24 said:
Summary:: I designed a micro pneumatic piston that can stay in a position as long as no extra force is applied

Hey guys I am a freshman design student and I have been doing a project in which I am using a pneumatic piston that I designed, I don't have depth knowledge about pneumatics but I tried something. I am using simple concept for this if the cylinder is already pressurized and I am able to join both chambers, do piston is going to sustain its position?View attachment 265290 I need help in this I am sharing my design with this
Welcome to the PF. :smile:

If ##P_1## and ##P_2## are initially different and you open the valve to equalize them, the piston should move according to the Ideal Gas Law. Are you familiar with that equation?
 
Why do you believe it will sustain its position? Could you lay out your thought process here?
 
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Polar24 said:
I am using simple concept for this if the cylinder is already pressurized and I am able to join both chambers, do piston is going to sustain its position?
The piston will appear to be like a spring.
As you move the piston the enclosed volume will change, because the area of the piston A1, is equal to the area of the annulus A2, plus the area of the rod.

You have rediscovered the pneumatic equivalent to half of a regenerative hydraulic circuit.
 
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