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

Priority rules-conventional priority rules, Priority Rules A main conce...

Priority Rules A main concern rule is an algorithm that evaluates a priority number PN j for all operation j which enters the queue in front of a station (processing, cell, wo

Determine the efficiency of bell coleman cycle, (a) Derive a mathematical e...

(a) Derive a mathematical expression to determine the efficiency of Bell Coleman Cycle. (b) A dense air refrigeration cycle acts between pressures of 4 bar and 16 bar. The air t

Springs, write notes on close-coiled springs ,open-coiled springs semi ell...

write notes on close-coiled springs ,open-coiled springs semi elliptical leaf springs ,quarter elliptical leaf springs .how to determine shear stress deflection stress energy and

Measurement of hardenability, Measurement of Hardenability: Two testi...

Measurement of Hardenability: Two testing techniques have been enhancement to measure the harden-ability of steels. The first, termed as cylinder series test, offers a single

#boiler.., what is the essentials of a good boiler?

what is the essentials of a good boiler?

Gudgeon pin-basic components of engine , Gudgeon Pin: It forms the link b...

Gudgeon Pin: It forms the link between the small end of the connecting rod and the piston. It is a small pin as shown in Figure 2.13. Figure : Gudgeon Pin

Explain caustic stress corrosion cracking, Q. Explain caustic Stress Corros...

Q. Explain caustic Stress Corrosion Cracking? Dilution of the caustic prior to injection into a relatively hot stream will minimize the potential of caustic Stress Corrosion Cr

Determine a static feedforward controller, By operation of the distillation...

By operation of the distillation columns you are often interested to maintain output despite fluctuations in the composition, ex. feed composition and feed flow. One possible actua

Scissor Lift Table, For my senoir design project, I chose a scissor lift ta...

For my senoir design project, I chose a scissor lift table. My issue is finding a a roller to fit my design with .1 in od, press fit on >5 in shaft that can support 125-150 lb/sh

First law for closed system undergoing cycle, First Law for closed system u...

First Law for closed system undergoing cycle: In accordance to first law, when a closed system undergoes thermodynamic cycle, the net heat transfer is equal to network transfe

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