Stability analysis for vibration structure

[AlexWong122]

Hi all,

I am designing a housing structure that will hold a energy dissipation valve. When this valve is open, significant vibration will occur. For the stability analysis, this structure will hold the water pressure (around 350m water head) under normal condition (valve closed). I am just wondering when the valve opens, is there any reduction factor for friction or weight that I can use to count for the vibration? Or is there any reference paper about that?

Thanks for your input in advance.

Alex

 

[WARose]

I am designing a housing structure that will hold a energy dissipation valve. When this valve is open, significant vibration will occur. For the stability analysis, this structure will hold the water pressure (around 350m water head) under normal condition (valve closed). I am just wondering when the valve opens, is there any reduction factor for friction or weight that I can use to count for the vibration? Or is there any reference paper about that?

Maybe it's just me....but I don't get your question. "Reduction factor" for what? Overall stability of the structure (in terms of overturning, sliding, etc)? Vibration control? What do you seek to apply the "reduction factor" [red]to[/red]? The weight? The force "F"?

The problem/question needs to be much clearer.

 

[TLHS]

When the valve's closed, the structure won't hold any pressure force, unless this is a non-mechanically continuous pipe (i.e. bell and spigot, some types of ductile iron pipe, expansion joints, non-mechanically coupled pipes, etc). The valve would be restrained by tension forces in the pipe.

 

[TLHS]

When it's open, though, you'll get a thrust force due to pressure on the last elbow/momentum of the water jet