HELICAL TORSION AND MULTI LEAF SPRINGS: STUDY

HELICAL TORSION AND MULTILEAF SPRINGS

Helical Compression and Extension springs had been discussed in the previous blog.

Now, let’s come to the study of the HELICAL TORSION SPRINGS , its structure, function and applications.

HELICAL TORSION SPRINGS:

Helical torsion springs seems quite similar to Helical Compression OR Extension springs but has some changes.

Here, torsion springs shows the property that its ends made in such a way ,so that the spring undergoes loading by a torque, acting along the axis of the coil.

Basically , it’s a modification of the Helical Compression/Extension Springs.

These torsion springs main function is to used to transmit torque to a particular component in a mechanism.

STRESS CHARACTERISTICS IN TORSION SPRINGS:

A Torsion spring shown as below has this particular design:

This springs transmits a torque of (P*r) . Due to this ,this spring resists this Bending moment (P*r) which tries to wind up the spring. This bending moment induces bending stresses in the spring wire.

CONCLUSION:

According to the observation , we conclude that the term “torsion spring” seems somewhat meaningless. Because, here the wire induces bending stresses in it due to bending moment, unlike torsional shear stresses as came in Helical Compression/Extension springs. Here, although Effort was torsional moment, but output came out as bending stresses and not torsional shear stresses.

TO KNOW MORE
https://mechomotive.com/helical-springs/