Determine the mean radius of an open coiled spring, Mechanical Engineering

Assignment Help:

Determine the mean radius of an open coiled spring:

Determine the mean radius of an open coiled spring of helix angle of 38o, to give a vertical displacement of 20 mm and an angular rotation of 0.02 radian at free end under an axial load of 30 N. The material available is equal to 6 mm diameter steel bar. Take E = 200 GPa, G = 80 GPa.

Solution

α = 30o, Δ = 20 mm, φ = 0.02 radian, W = 30 N, E = 200 GPa, G = 80 GPa

Δ=        (64 W R3 sec α /d4 )   + (cos2 α /G  + 2 sin 2 α /E)             -------- (1)

φ= (64 W R3 sin α/d4   )((1/G -2/E)   ------------- (2)

Eq. (2) divided by Eq. (1), we obtain

272_Determine the mean radius of an open coiled spring.png

2258_Determine the mean radius of an open coiled spring1.png

1000 =  R (0.115)/( 0.433 × 0.025)

∴          R = 94 mm


Related Discussions:- Determine the mean radius of an open coiled spring

Literature review on co2 positive displacement pump, How can I get the lit...

How can I get the literature review on fabrication and construction of a modified Co2 single stroke positive displacement pump driven with electric motor

Welding, Why is the quality of welds produced by submerged arc welding very...

Why is the quality of welds produced by submerged arc welding very good#Minimum 100 words accepted#

Classify the two wheeler engines, (a) Classify the two wheeler engines. ...

(a) Classify the two wheeler engines. (b) Define the following components and their uses in engine with the help of engine diagram. (i) Crankcase (ii) Piston and Piston pi

Compute the angular velocity of bar, Compute the angular velocity of bar: ...

Compute the angular velocity of bar: A bar AB as shown in slides so that its bottom point A has a velocity of 4 m/sec to the left along the horizontal plane. Compute the veloc

Define myocardial oxygen uptake, Q. What do you understand by Myocardial Ox...

Q. What do you understand by Myocardial Oxygen Uptake? VO 2 max = Maximum C.O x Maximum A-V Oxygen difference. It is the maximum amount of oxygen that the person can use du

Calculate critical speed of shaft, The rotor of a turbo charged having mass...

The rotor of a turbo charged having mass of 10 Kg is keyed to the centre of 25 mm diameter of steel shaft of 400 mm between bearings. Calculate : (i) Critical speed of shaft.

Calculate size of blank required for drawing, Calculate Size of Blank Requi...

Calculate Size of Blank Required for Drawing A flanged cup shown in Figure is to be produced by deep drawing. Calculate the size of the blank required for drawing.

Perform a beam analysis, You need to sketch shear force and bending moment ...

You need to sketch shear force and bending moment diagrams and estimate maximum bending and shear stresses acting on the beam using your knowledge in beam analysis.  Please note

V-block and clamp - angle projection drawing, A V-block clamp consists of 3...

A V-block clamp consists of 3 components, a V-block, yoke and clamping screw.  Using a rule, measure the sketches below and produce a 3rd angle projection drawing for each componen

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