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

Determine the root of equation, Calculate the value of ∫ Π/2 sinx dx by Si...

Calculate the value of ∫ Π/2 sinx dx by Simpson's 1/3 rule using 11 ordinates. Determine the root of equation xe x = cosx using secant method correct to four decimal places.

Benefits of a good layout and design of plant, Q. Benefits of a good layout...

Q. Benefits of a good layout and design? The benefits of a good layout and design cannot be overemphasized. They provide an irreplaceable safety factor throughout the life of t

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

Equivalent force f - mechanics, If Equivalent force F and F acting on rigid...

If Equivalent force F and F acting on rigid body are not in line Sol.: If equivalent force of same magnitude 'F' acting on the rigid body are not in line, then there is no c

Illustrate about the term bearing capacity, Illustrate about the term beari...

Illustrate about the term bearing capacity? The bearing capacity of a soil mass frequently termed as the ability of the soil to carry the loads without any failure. The foun

Explain machining allowance, Q. Explain Machining allowance? Machining...

Q. Explain Machining allowance? Machining allowance or finish allowance indicates how much larger the rough casting should be over the finished casting to allow sufficient mat

Rubber, Rubber Rubber is a plastic that is largely derived from natura...

Rubber Rubber is a plastic that is largely derived from natural sources and utilized in a modified form. For automobile tyres, Rubber is well identified as material. Rubber re

Define cases in which automation is done, Define Cases in which Automation ...

Define Cases in which Automation is Done Automation is done in following cases:- a) Loading and unloading of parts. b) Automatic production lines. c) Automatic tool ch

Determine the forces in members in roof truss, Determine the Forces in Memb...

Determine the Forces in Members in Roof Truss Determine the forces in members EF, EL, FL, and LK in the roof truss shown below and state whether the members are in tension or

Slip-on flanges, Slip-On Flanges Slip-on flanges are limited to use und...

Slip-On Flanges Slip-on flanges are limited to use under the following conditions: ASME/ANSI B16.5 standard forged flanges for design pressures and coincident temperatures n

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