Lateral Rigidity of Helical Spring (1st Report)

Abstract

If a helical spring is fixed at one end, and subjeded to any force and moment at the other end, the deflection of the spring will be caused. The value of this deflection is necessary for the design of helical spring and calculation of any vibration problem, but its precise solutions have not been hitherto known. Now evaluating the precise expressions of lateral rigidity of helical spring by theory of elasticity, we found them quite appropriate by comparing them with experimental values, and also they are more precise than the values calculated by "Die Federn" published by V.D.I.