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

What is the objective of hydrostatic sensor paver machine, What is the obje...

What is the objective of hydrostatic sensor paver machine To eliminate the problem in screw conveyer extension of hydrostatic sensor paver machine as per screed width" The p

Corrosion - erosion allowance, Q. Corrosion - Erosion Allowance? The re...

Q. Corrosion - Erosion Allowance? The required design life shall be based on written agreement between the user and the Engineering Contractor. Allowance specified shall be ba

Principal planes and principal stresses, Principal Planes and Principal Str...

Principal Planes and Principal Stresses: Define the Principal Planes and Principal Stresses. Sol.: When an element in strained body is under action of plane stresses, it i

Explosive welding i cladding, EXPLOSIVE WELDING I CLADDING In this pr...

EXPLOSIVE WELDING I CLADDING In this process, two pieces of metal are impacted together at an extremely high velocity of impact achieved by the detonation of an explosive cha

Explain straight line mechanism, a) Illustrate with the help of neat sketch...

a) Illustrate with the help of neat sketch any three straight line mechanism. b) Describe Degree of Freedom and prove the relation for Grumbler's equation.

Statements of second law of thermodynamics, (a) Show that two statements of...

(a) Show that two statements of Second Law of thermodynamics are equivalent to each other. (b) A house that was heated by electric resistance heater consumed 1200 KWh of electri

Calculate the stress at the outer edges, A column is made from a universal ...

A column is made from a universal I-section 203x 203 x 60. A load of 96kN is applied on the y-axis offset 50mm from the centroid. Calculate the stress at the outer edges of the y-a

Show environmental conditions for plant, Q. Show Environmental Conditions f...

Q. Show Environmental Conditions for plant? Data on the following environmental factors are required to support the design layout and choice of the most appropriate orientatio

Show the support locations for truckable skid, Q. Show the support location...

Q. Show the support locations for truckable skid? Unless instructed otherwise by Engineer, support locations for truckable skid shall be determined by skid Vendor. Support loca

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