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

Illustrate types of pipe racks, Q. Illustrate types of pipe racks? The ...

Q. Illustrate types of pipe racks? The following types of pipe racks may be required: • Interconnecting pipe rack (elevated). • Unit pipe rack (elevated). • Pipe ra

Subcontractor submittals, The Supplier/Subcontractor shall submit, for acce...

The Supplier/Subcontractor shall submit, for acceptance, their Material Traceability and PMI program and procedures, which shall comply with this specification, prior to the sourci

Diffusion bonding, DIFFUSION BONDING In this process, union between sp...

DIFFUSION BONDING In this process, union between specially prepared mating surfaces takes place as a result of diffusion, which occurs due to high temperature & pressure, exer

Portable gas cylinders - handling of hazardous, Q. Portable Gas Cylinders -...

Q. Portable Gas Cylinders - Handling of Hazardous? Portable Gas Cylinders Portable gas cylinders are vulnerable to fire exposure when located in process areas. Depending on l

Cad - requirements for standard interface, Requirements for Standard Interf...

Requirements for Standard Interface  The interface must be capable of handling all kinds of manufacturing data. There should be no information loss when data is transf

Benefits of registration in entrepreneurship development, Benefits of Regis...

Benefits of Registration: Units would normally get registered to avail some benefits, incentives or support given either by the Central or State Govt. The regime of incentives off

Show the procedure of welding of vessels, Q. Show the procedure of Welding ...

Q. Show the procedure of Welding of vessels? Welding of vessels, including pressure retaining parts and attachments thereto, shall be performed utilizing Welding Procedures, We

Calculate the torque, (a) Illustrate self-locking and self-energizing brake...

(a) Illustrate self-locking and self-energizing brakes. (b) The diameter of the drum is 250mm and the angle of contact is 90 o , If the operating force of 700 N is applied at th

Spot welding of different metals-stainless steel, Spot welding of different...

Spot welding of different metals-Stainless steel Stainless steel is having lower thermal conductivity compared to mild steel. Therefore, it requires less heat input. But, stain

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