Open coiled helical spring, Mechanical Engineering

Assignment Help:

Open coiled helical spring:

In an open coiled helical spring along with α = 38o, if the inclination of the coil is ignored, determine the percentage by which the axial extension is under estimated.

E = 200 GPa, G = 80 GPa.

Solution

Δ= (64 W R3 n / d 4 cos α)( (cos2 α/G)+(2 sin 2 α /E))

            = K/ cos α[cos2 α/G     +2 sin 2 α/E]

α= 38o , Δ = K × (0.115/0.866) × 10- 4  = K × 0.0147

If α is neglected,

α= 0, Δ2  = K × 0.0125

% Error = ((Δ1 - Δ2 ) / Δ1 )× 100

= (0.0147 - 0.0125/0.0147) × 100 = 14.96%


Related Discussions:- Open coiled helical spring

Metallurgy, what is mean by precipitation hardening?

what is mean by precipitation hardening?

Torsion equation for solid circular shaft, Prove the torsion equation T/J=τ...

Prove the torsion equation T/J=τ/R=C. θ/L for the solid circular shaft. State the various assumptions used on above said equation.

Convert the flow-rate of a compressor, Convert the flow-rate from Am3/h to ...

Convert the flow-rate from Am3/h to Sm3/h Consider a compressor (model ABC-Z4).  The compressor has a suction pressure of 3 barg, and a discharge pressure of 6 barg.  The inlet

Powder metallurgy, why pre sintering needed in powder metallurgy

why pre sintering needed in powder metallurgy

Copper-beryllium alloys, Copper-Beryllium Alloys Copper-beryllium allo...

Copper-Beryllium Alloys Copper-beryllium alloys comprise between 0.6 to 2% Be and 0.2 to 2.5% Cobalt. Such alloys can be precipitation hardened and cold worked to improve a te

Classify the various types of manometers, (a) What are fluids? How are they...

(a) What are fluids? How are they classified? (b) Classify the several kinds of manometers. (c) Define the following (d) Define metacenter (1) Steady flow (2) Unsteady

Third gear position - shifting of gear, Third Gear Position: When gea...

Third Gear Position: When gear M3 on the main shaft is in mesh with gear C3 on the counter shaft then this is known as third gear position. The fixed gear M3 rotates with mai

Harmonic motion equilibrium, (a) Split up the harmonic x = 8 sin(ωt + 45°),...

(a) Split up the harmonic x = 8 sin(ωt + 45°), into two harmonic motions, one of which has amplitude of 10 and phase difference zero. (a) A body is subjected to two harmonic mot

Explain screed unit, Explain the Screed unit The main screed is pivoted...

Explain the Screed unit The main screed is pivoted at the centre point of the machine to assure a constant flatness of work on uneven grounds. It consists of 2440 mm main scree

Mockup of tube to tubesheet, what are the tests to carried out after mockup...

what are the tests to carried out after mockup preparation

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd