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Advantages Of Helical Spring

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CHAPTER - 1
INTRODUCTION
GENERAL INTRODUCTION
1.1 Helical Spring
Helical spring is defined as an elastic body, whose function is to distort when loaded and to recover its original shape when the load is removed. The helical springs are made up of a wire coiled in the form of a helix and are primarily intended for compressive or tensile loads. The cross-section of the wire from which the spring is made may be circular, square or rectangular. Helical compression springs have applications to resist applied compression forces or in the push mode, store energy to provide the "push". Different forms of compression springs are produced. The helical springs are said to be closely coiled when the spring wire is coiled so close that the plane containing each …show more content…

• Measuring forces, as in the case of spring balances. Ex weighing machine.
• Storing energy, as in the case of clock spring & spring used in the toys.
• Reduce the effect of shock loading .as in the case of vehicle suspension spring.
• Changing the vibration characteristics of machine mounted on founded beds.
1.5 Design of Helical Spring A helical compression spring made of circular wire and subjected to an axial load W as shown in fig. D = Mean diameter of the spring coil d = Diameter of the spring wire n = Number of active coils G= Modulus of rigidity for spring material F =Axial Force on the spring.
 Maximum shear stress induced in the wire. C=Spring index =D/d P=pitch of the coils
 Deflection of the

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