BLOGS

BLOGS

Manufacturer of various types of compensators, metal bellows expansion joints, and corrugated metal hoses

Industry News

Company News

10

2024

-

04

The stability of stainless steel bellows determines its pressure resistance

When the stainless steel bellows is subjected to a pressure in the axial direction that exceeds the pressure it can support, it will suddenly bend and lose the stability of the straight line shape, just like a compressed rod or a cylindrical helical spring. This is inevitable. If the internal pressure of the bellows exceeds a certain pressure value it can support, it will also become unstable. Experiments have shown that most of the damage to bellows in engineering is caused by this reason. Whether it is elastic seals, axial expansion compensators, or metal hoses, this problem exists.

When the stainless steel bellows is subjected to a pressure in the axial direction that exceeds the pressure it can support, it will suddenly bend and lose the stability of the straight line shape, just like a compressed rod or a cylindrical helical spring. This is inevitable. If the internal pressure of the bellows exceeds a certain pressure value it can support, it will also become unstable. Experiments have shown that most of the damage to bellows in engineering is caused by this reason. Whether it is elastic seals, axial expansion compensators, or metal hoses, this problem exists.
 
       That is to say, the ability of stainless steel bellows to withstand internal pressure generally depends on its stability. To study the stability of stainless steel bellows, the well-known Euler compression bar formula can be used to calculate its critical load.

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