End Condition Constants For Helical Compression Springs Stability Analysis




END CONDITION CONSTANTS FOR SPRING STABILTY ANALYSIS
End Condition  Constant (α)
Spring supported between flat parallel surfaces (fixed ends) 0.5
One end supported by flat surface perpendicular to spring axis (fixed); other end pivoted (hinged) 0.707
Both ends pivoted (hinged) 1
One end clamped; other end free 2
Note: Ends supported by flat surfaces must be squared and ground.
End-Condition Constants α for Helical Compression Springs
Source : From Shigley's Mechanical Engineering Design [Ref 2] page 504



Reference: