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

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

Axis of symmetry, Axi s of symmetry If in diagram half part of diagram...

Axi s of symmetry If in diagram half part of diagram is mirror image of next ½ part, then there is a symmetry in diagram. The axis at which symmetry is create, called as axis

Performance of heat engine - thermodynamics , Performance of Heat engine: ...

Performance of Heat engine: Performanc e of HP:   It is measured by thermal efficiency that is the degree of useful conversion of heat received into work.

Flux cored arc welding (fcaw), Flux Cored Arc Welding (FCAW) This is a ...

Flux Cored Arc Welding (FCAW) This is a variation of GMAW where solid wire is replaced by flux cored wire. The equipments and accessories are the same. Generally, flux cored wi

Distance between nozzles, Every loaded blade rod is consists of 400 pieces ...

Every loaded blade rod is consists of 400 pieces of blades which around 25cm tall. The blasting nozzle vertical height different is just about 10 cm. The nozzle will blast the blad

Piping, difference between pipe and tube

difference between pipe and tube

Car management system, Car Management System: You have been approached...

Car Management System: You have been approached by a Used Car Dealership who wishes to introduce an IT system to support their business. You are required to implement a protot

Dual cycle of heat engine.., how to calculate the mean effective pressure o...

how to calculate the mean effective pressure of a dual cycle

Parallelograular law of forces and triangular of forces, two forces are act...

two forces are acting at a point''o'',determine magnitude and direction by using parallelogram law of forces and triangular law of forces

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