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

determine the mass of air, An amount of air contained in a rigid container...

An amount of air contained in a rigid container is at  T1 = 300 K.  After adding 450 kJ of heat, the air temperature increases to  T2 = 430 K.  Determine the mass of air,  m [kg],

Explain the feature of screw conveyor, Explain the Feature of screw conveyo...

Explain the Feature of screw conveyor Screw conveyor has such feature as simple structure compact transverse dimension convenient maintenance enclosed delivery and small produc

Determine the point of intersection jets, A tank has two identical orifices...

A tank has two identical orifices in one of its vertical sides. The upper orifice is 3m below the water surface and lower one is 5m below the water surface. If the value of Cv for

Numerical problems based on the cantilever beam, Numerical Problems Based o...

Numerical Problems Based on the Cantilever Beam: Draw the SF and BM diagram for the beam as shown in the figure given below. Also indicate principal values on diagrams.

#title.strengh of materials., What is the Ultimate Tensile Strength for alu...

What is the Ultimate Tensile Strength for aluminum in the SI Units?

Flue gas excess oxygen control for steam generator, Q. Flue Gas Excess Oxyg...

Q. Flue Gas Excess Oxygen Control for steam generator? Air-gas ratio control provides approximate excess oxygen control. However, an in-situ oxygen probe measures the actual o

Explain streak line and stream function, Describe the following key terms: ...

Describe the following key terms: (i) Stream Line (ii) Path Line (iii) Streak Line (iv) Stream Function (v) Potential flow function (vi) Flow net

Define properties of system, Define Properties of System For defining a...

Define Properties of System For defining any type of system particular parameters are required. Properties are those observable characteristics of the system, which can be util

CAMS, COMPARISON WITH CAM MECHANISMS WITH LINKAGES

COMPARISON WITH CAM MECHANISMS WITH LINKAGES

Want settle down where sheet metal engeniers are requiered, #question.want ...

#question.want settle down where sheet metal engineers are required.

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