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

If crankshaft oil seal seating area found ok, If crankshaft oil seal seatin...

If crankshaft oil seal seating area found ok : Replace with a new oil seal and ensure the seal seats in the stator plate properly and while fixing the stator plate ensure using sta

Remove clutch cover and check clutch- clutch complaint, Remove clutch cover...

Remove clutch cover and check clutch operating arm, spring and clutch lifter rod :Check for free movement of rod clutch lifter in the cover right crankcase. Check for lever comple

Find length of belt, Find length of belt: Find length of belt which i...

Find length of belt: Find length of belt which is required to drive a pulley of 500mm diameter running parallel at the distance of 12m from driving pulley of diameter 1600m.

Stress concentrations, Describe the test specimens that were used in the te...

Describe the test specimens that were used in the testing program, and what one hopes to learn by testing them. Show the "test matrix" (i.e. a listing of what specimens made of wh

Rankine Cycle, In a nuclear power plant saturated steam at 30 bar enters a ...

In a nuclear power plant saturated steam at 30 bar enters a h.p. turbine and expands isentrophically to a pressure at which its quality is 0.841. At this pressure the steam is pass

Calculate the time required to complete the job, Five jobs are performed fi...

Five jobs are performed first-on Machine-I and then on Machine-II. Time in hours taken by each job on each machine is given below :

Determine the stresses in the shell, Determine the stresses in the shell: ...

Determine the stresses in the shell: A cylindrical boiler is 2.5 m in diameter and 20 mm in thickness and it carries steam at a pressure of 1.0 N/mm2. Determine the stresses i

How to observe water level, Q. How to observe water level? Site for ins...

Q. How to observe water level? Site for installing gauges should be properly selected. The reach should be reasonably straight and of uniform cross· section and slope. The leng

Resistant body-mechanism-curvilinear motion-machine, Resistant Body: A bo...

Resistant Body: A body is called resistant body if this is capable of transmitting the needed forces with negligible deformation. Machine: A machine is a mechanism or a se

Sewage treatment, Q. Sewage Treatment? Unless located in a metropolitan...

Q. Sewage Treatment? Unless located in a metropolitan area, it is common for plants to have sewage treatment facilities for disposal of sewage and grey water generated in the p

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