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

Answer me, Produce as individuals a single tab Excel spreadsheet which show...

Produce as individuals a single tab Excel spreadsheet which shows a rough initial design for a water treatment plant taking 15MLD of water with 100 mg/l SS from a lake at 750mAOD,

Determine thermal contact resistance, Derive the mathematical Heat Conducti...

Derive the mathematical Heat Conduction equation through a composite wall. Determine Thermal contact Resistance ?

Explain the Wire-frame models, WIRE-FRAME MODELS  The wire-frame model ...

WIRE-FRAME MODELS  The wire-frame model is perhaps the oldest way of representing solids. According to this model, any solid is represented by its edges and vertices. A wire-fr

Group technology, comparing the different coding systems ?

comparing the different coding systems ?

Find cutting speed for prolonging tool life , Find Cutting Speed for Prolon...

Find Cutting Speed for Prolonging Tool Life A form tool machining at 24 m/minute requires re-sharpening after 30 minutes. What should be the cutting speed for prolonging tool

Drainage of the railway track - construction of railway line, Drainage of t...

Drainage of the Railway Track: It is necessary to keep the embankment free from water. This is done by providing side ditches, all along the edge of the embankment, and leadi

Gears, What is the working depth of a gear

What is the working depth of a gear

Advantages-disadvantages of transparent polymeric, (a) List several advanta...

(a) List several advantages and disadvantages of using transparent polymeric materials for eyeglass lenses. (b) Cite four properties (in addition to being transparent) that are

Determine the loading on the beam, Determine the loading on the beam: ...

Determine the loading on the beam: Shear force diagram for a loaded beam is illustrated in Figure. Determine the loading on the beam & therefore, draw the bending moment diagr

Explain the working of die casting, Q. Explain the working of Die Casting? ...

Q. Explain the working of Die Casting? In the die casting process the, mould used for a casting is permanent called a die casting. it is shown in figure. It is thus quite diffe

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