Open coiled helical spring, Mechanical Engineering

Assignment Help:

Open coiled helical spring:

In an open coiled helical spring along with α = 38^o, 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 ⁴cos α)( (cos² α/G)+(2 sin ² α /E))

= K/ cos α[cos² α/G +2 sin ² α/E]

α= 38^o , 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

Flange assembly with bolt tensioning, Q. Flange Assembly with Bolt Tensioni...

Q. Flange Assembly with Bolt Tensioning? Measure the free length of the bolts ultrasonically. This must be done prior to applying any load to the bolt. Install bolts on the

Aircraft characteristics - military and civil aircraft, Aircraft Characteri...

Aircraft Characteristics For planning and designing airport facilities, it is necessary to be conversant with the following important characteristics: (a) speed (b) size

CENTRE OF GRAVITY OF WIRE, WHATIS CG OF A WIRE BENT IN THE FORM OF A QUARTE...

WHATIS CG OF A WIRE BENT IN THE FORM OF A QUARTER ELLIPSE

Steam hot service insluation thicknesses, Q. Steam Hot Service Insluation T...

Q. Steam Hot Service Insluation Thicknesses? Steam Hot Service Insluation Thicknesses are specified based on the following design criteria: Average Annual Climatic Condi

Computer aided process planning, advantages of generative process planning

advantages of generative process planning

Manufacturing prossess, describe advantages of limitation and effect of col...

describe advantages of limitation and effect of cold working?

Finite element method, need help with mu assignment . urgent have to submit...

need help with mu assignment . urgent have to submitted it by tomoroww morning

Non-ferrous materials, NON-FERROUS MATERIALS: Latest technology has be...

NON-FERROUS MATERIALS: Latest technology has been highly dependent on non-ferrous and alloys for in specific cases they represent the compensation of high strength and low wei

Circulation pumps, Are the types of pumps selected (base mounted, in-line)?...

Are the types of pumps selected (base mounted, in-line)? Locate pump on discharge side of boiler. Flexible connector used. Valving indicated, isolation valve on suction and dis

Ancillary railway structures, Ancillary Railway Structures: Overhe...

Ancillary Railway Structures: Overhead Transmission Lines When the line is electrified, the electric loco has to pick up the electric current from a cable that runs

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages