Determine strain energy stored in coiled helical spring, Mechanical Engineering

Assignment Help:

Determine Strain energy stored in coiled helical spring:

For a close coiled helical spring subjected to an axial load of 200 N with 10 coils of wire of diameter 18 mm and built with coil diameter of 200 cm, determine

1.      strain energy stored,

2.      axial deflection, and

3.      maximum shear stress in the wire.

Take G = 80 GN/m2.

Solution

 W = 200 N, n = 10, d = 8 mm, D = 20 cm = 200 mm, R = D/2 = 100 mm

Neglecting effect of direct shear since (d /2 D)  < < 1.

Axial deflection,  Δ=  64 W R3 n / Gd 4

=64 (200) (100)3 (10) /(80 × 103 ) (18)4

= 15.24 mm

Strain energy, =( ½) W Δ

= (½) × 200 × (15.24 /1000) = 1.524 N-m

Maximum shear stress,  τmax  = 16 W R  /π d3

= 16 (200) (100) / π (18)3

= 17.5 N/mm2


Related Discussions:- Determine strain energy stored in coiled helical spring

Process selection in making a simple part, Process Selection in Making a Si...

Process Selection in Making a Simple Part You should first determine the part's function, the types of load and environment to which it would be subjected, the dimensional to

Spot welding of different metals-copper, Spot welding of different metals-C...

Spot welding of different metals-Copper Resistance welding copper is perhaps the most difficult case owing to the high electrical and thermal conductivities of copper. If is no

FEM, assignment help needed

assignment help needed

Static friction, Static Friction: When applied force is less than limiting...

Static Friction: When applied force is less than limiting friction, body remains at rest and this type of frictional force is called as static friction and this law is called as l

Alloy materials control, Q. Alloy materials control? All low alloy and ...

Q. Alloy materials control? All low alloy and high alloy equipment components including fittings, flanges and sections of pipe and all welds shall be individually tested by Ven

Safety considerations in multi-unit plants, Q. Safety considerations in mul...

Q. Safety considerations in multi-unit plants? Segregation of process units within large or multi-unit plants is necessary in order to reduce the risk of a fire spreading. This

Theory of machine, write short note on''coefficient of insensitiveness''of ...

write short note on''coefficient of insensitiveness''of governors.

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