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

Generic cell control class architecture, Generic Cell Control Class Archite...

Generic Cell Control Class Architecture The initial step in designing the system is the development of classes. All classes are assigned responsibilities for specific tasks nee

Explain the welding process, All shell and head joints shall be double-weld...

All shell and head joints shall be double-welded butt joints with full penetration. In cases where double welding is impractical, the root pass shall be made by the GTAW process.

How cad system communicate with control system, How CAD system communicate ...

How CAD system communicate with control system The concept of a universal data exchange system is depicted in figure. In this figure, it is shown how various CAD systems commun

Calculate all the mass-normalised modal vectors, The body, suspension and e...

The body, suspension and engine mounting system of a vehicle may be idealised as a three degree of freedom system consisting of a bar of mass 1400 kg and the centre of mass at G, 1

Define the effect of feed, Define the Effect of Feed Increase in feed r...

Define the Effect of Feed Increase in feed rate deteriorates surface finish. It is observed that a rate of feed in the range from0.12 to 0.15 mm per revolution has a negligible

Painting of structural components of skid, Q. Painting of structural compon...

Q. Painting of structural components of skid? Sandblasting and priming shall be carried out prior to assembly, and shall include all bolt holes, flange faces, etc. Flange gaske

Calculate for spring amount of load carried, Calculate for spring amount of...

Calculate for spring amount of load carried: The table below gives specific of a compound spring consisting of two co-axial close-coiled springs. If the spring is subjected to

Gating system design, Explain the several types of pattern allowances with ...

Explain the several types of pattern allowances with neat sketch. Show the six important - aspects of gating system design. Illustrate briefly their functions.

Metallurgy, what is mean by precipitation hardening?

what is mean by precipitation hardening?

Tungsten inclusions, Tungsten Inclusions Tungsten inclusion is a disconti...

Tungsten Inclusions Tungsten inclusion is a discontinuity found only in TIG welding. Particles of tungsten from the electrode can be embedded in a weld when improper welding proc

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