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

Michelson interferomete, how it is use to determine the wavelenth of He-Ne ...

how it is use to determine the wavelenth of He-Ne laser?

Single direction pump, Can I have a quote for answers relating to this ques...

Can I have a quote for answers relating to this question (6 and 7) on my paper. Thanks

Evaluate natural frequency of damped vibrations, What are various types of ...

What are various types of damping ? Explain viscous damping. A vibrating system is defined by the following parameters : m = 4Kg, K = 10N/m, C =3N-Sec/m Evaluate (a) Na

Belt drive, how will u designate a v belt

how will u designate a v belt

Testing of resistance welds, TESTING OF RESISTANCE WELDS There are a nu...

TESTING OF RESISTANCE WELDS There are a number of destructive and non destructive tests available for testing the welds obtained by resistance welding. Radiographic or Ultrason

Determine in brief about the residual soils, Determine in brief about the R...

Determine in brief about the Residual soils Residual soils are generally very complex and varied. They are the products of in-situ disintegration of rocks and weathering. The g

Bending stresses, Determine: Reaction forces at the supports The shear an...

Determine: Reaction forces at the supports The shear and moment diagrams The location and value of the maximum shear and moment The cross section is an angle section as given in

Truss, how can we modified truss to make sure it can support 20% more force...

how can we modified truss to make sure it can support 20% more forces than usual?

Classification of power sources according to construction, CLASSIFICATION O...

CLASSIFICATION OF POWER SOURCES ACCORDING TO CONSTRUCTION & DESIGN To give the desired output a power source may be constructed with different components. Therefore, a classifi

Construct a retrograde vernier scale, Construct a retrograde Vernier scale:...

Construct a retrograde Vernier scale: During construct a retrograde Vernier to a scale of 1/5, signify inches and 10 th , and 30 inches and long sufficient to read to mark dis

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