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

Tap switches, Tap switches There are elements for connecting the variou...

Tap switches There are elements for connecting the various taps on the primary winding of the transformer to the power supply line. The switches are usually of the rotary dead

Neutral layer and neutral axis, Neutra l Layer and Neutral Axis In the...

Neutra l Layer and Neutral Axis In the beam or cantilever, there is one layer which retains the original length of it even after bending. So in this layer tensile stress and c

Flow work and flow energy - thermodynamics, Flow Work and Flow Energy - the...

Flow Work and Flow Energy - thermodynamics: Flo w Work:  The flow work is energy needed to move the working substance against its pressure It is called as flow or displac

Select a flat belt drive, It is essential to select a flat belt drive for a...

It is essential to select a flat belt drive for a compressor running at 720 r.p.m which is driven by a 25kW, 1440 r.p.m. motor. Space is available for a distance of 3m. The belt is

Determine the stresses acting on the plan, Using Mohr's Circle Method deter...

Using Mohr's Circle Method determine the stresses acting on the plan as shown in figure. Also write the procedure.

Fuel feed system, Fuel Feed System: Fuel feed system is provided to serve ...

Fuel Feed System: Fuel feed system is provided to serve the air fuel mixture to the engine in an appropriate ratio so that it can burn efficiently and transmit power to crank shaf

Necessity of suspension system , Necessity of Suspension System No...

Necessity of Suspension System Not to transmit road shocks to the motorcycle components. To guard the driver from road shocks and to make sure the stability of the ve

Urine preservatives - specimen collection, Urine preservatives - Specimen c...

Urine preservatives - Specimen collection: Urine preservatives : preservatives have different roles but are usually added to reduce bacterial action or chemical decompo

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