Page 409 - Analysis and Design of Machine Elements

14 387

Springs

Nomenclature g gravity acceleration, m s −2
H f free height/length of spring, mm
b slenderness ratio H length of hook, mm
h
C spring index H installed height/length, mm
i
D mean diameter, mm H o operating height/length, mm
D i inside diameter, mm H s solid height/length, mm
D o outside diameter, mm h working distance of a spring, mm
d spring wire diameter, mm I moment of inertia of spring wire,
E modulus of elasticity, MPa mm 4
F external axial force, N J polar moment of inertia, mm 4
f fundamental natural frequency, Hz K Wahl factor
n w
G shear modulus, MPa K wT Wahl factor for torsion spring
Analysis and Design of Machine Elements, First Edition. Wei Jiang.
© 2019 John Wiley & Sons Singapore Pte. Ltd. Published 2019 by John Wiley & Sons Singapore Pte. Ltd.
Companion website: www.wiley.com/go/Jiang/analysis_of_machine_elements