Sh/Coupling/Brg/Mis = Thin,Soft,Soft,angle. Fmax~219

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Presentation transcript:

Sh/Coupling/Brg/Mis = Thin,Soft,Soft,angle. Fmax~219

Sh/Coupling/Brg/Mis = Thin,Soft,Soft,offset. Fmax~246

Sh/Coupling/Brg/Mis = Thin,Soft,Hard,angle. Fmax~224

Sh/Coupling/Brg/Mis = Thin,Soft,Hard,offset. Fmax~324

Sh/Coupling/Brg/Mis = Thin,hard,soft,angle. Fmax~256

Sh/Coupling/Brg/Mis = Thin,hard,soft,offset. Fmax~248

Sh/Coupling/Brg/Mis = Thin,hard,hard,angle. Fmax~263

Sh/Coupling/Brg/Mis = Thin,hard,hard,offset. Fmax~329

Sh/Coupling/Brg/Mis = Thick,soft,soft,angle. Fmax~1024

Sh/Coupling/Brg/Mis = Thick,soft,soft,offset. Fmax~863

Sh/Coupling/Brg/Mis = Thick,soft,hard,angle. Fmax~1137

Sh/Coupling/Brg/Mis = Thick,soft,hard,offset. Fmax~5960

Sh/Coupling/Brg/Mis = Thick,hard,soft,angle. Fmax~3157

Sh/Coupling/Brg/Mis = Thick,hard,soft,offset. Fmax~889

Sh/Coupling/Brg/Mis = Thick,hard,hard,angle. Fmax~4546

Sh/Coupling/Brg/Mis = Thick,hard,hard,offset. Fmax~7476

Assumptions Used Each flex plane of coupling acts like an angular spring: Moment = Ka*Angle Euler-Bernoullie Beam model neglecting shear Neglect all dynamic effects

Comments Dynamic effects not considered Motor and pump assumed symmetric. If not, then zero-shear at coupling does not hold. Angle seems more sensitive to deviation from symmetric. For the combination hard coupling, soft bearing, offset created less force than angle (both thin and thick shaft) Angle creates more bearing angle deviation than offset in most cases Offset tends to hit the inboard bearing. Angle tends to hit both bearings. (force magnitude) * Soft or hard coupling makes much less difference when both shaft is thin and beairngs soft.