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Calculation Of Effective Area Of Bellows

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The effective area is one of the basic performance parameters of the Corrugated Metal Pipe, which represents the ability of the bellows to convert pressure into concentrated force.
 
The stability of effective area of corrugated tube directly affects the accuracy of the force balance instrument. So in this situation not only requires that the bellows have a reasonable effective area, but also requires that the effective area in the working process does not change with the working conditions.
 
Concept of effective area and change of effective area
 
The effective area is an equivalent area, and the pressure acting on this area will produce an equal axial force. Generally, with the increase of internal pressure, the effective area of the bellows becomes smaller, and the surface becomes larger with the increase of external pressure.