Discussion on the forces acting on fixed supports
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Generally, a fixed support is subjected to the combined force of three types of forces: 1) the elastic force of the compensator, 2) the thrust from internal pressure； 3. The reaction force due to the friction of the sliding bracket. So, 1. If there is no sliding bracket between the two fixed brackets, does the frictional reaction force mentioned above still exist? 2. Additionally, if there is only a sliding support on one side of the compensator, then only one of the two fixed supports will experience the reaction force due to friction, or will both be affected? 3. Finally, in what direction is the resultant force of the fixed supports applied to the structure?
It’s clearly a problem with the equipment – is sending process details meant to test their general knowledge? ;P I’ve forwarded it for you!
What I mean by fixed is that it’s welded in place
Your answer is based purely on mechanics; I need an answer that applies in practice. Thank you in advance
You’re completely right, but what I’m focusing on now is the reaction force of friction: lol
It is called the frictional reaction force, not friction force; the two have the same magnitude but opposite directions
Here, I understand that it is mainly the compensator that deforms, causing the pipeline to shift; this is true even for square compensators, as the pipeline still shifts. Where there is displacement, there is friction (provided there are sliding supports), and the so-called frictional reaction force should be the force that fixed supports must endure in order to overcome the friction of the sliding supports. These parts are my understanding; as for this reaction force, it is something that many textbooks will cover.