2) The extension spring shown in figurehas full-twisted loop ends. The materialInside dia. 50 mmis BS 5216 Grade 2. The spring has 84coils and is close-wound with a preloadof 80 N.a) Find the closed length of the spring.b) Find the torsional stress in the spring5 mmcorresponding to the preload.c) Estimate spring rate.5 mmd) What load would cause permanentdeformation?e) What is the spring deflectioncorresponding to the load found in partSunning length= 100 mmAssembled length= 180 mmFree length= 200 mm

(a) no. of coils in spring, n=84 Dia. of wire, d =5mm inside dia. of spring coil, Di =50mm…

2) The extension spring shown in figure has full-twisted loop ends. The material is BS 5216 Grade 2. The spring has 84 coils and is close-wound with a preload of 80 N. a) Find the closed length of the spring. b) Find the torsional stress in the spring corresponding to the preload. c) Estimate spring rate.

2) The extension spring shown in figure has full-twisted loop ends. The material is BS 5216 Grade 2. The spring has 84 coils and is close-wound with a preload of 80 N. a) Find the closed length of the spring. b) Find the torsional stress in the spring corresponding to the preload. c) Estimate spring rate.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

2) The extension spring shown in figure
has full-twisted loop ends. The material
Inside dia. 50 mm
is BS 5216 Grade 2. The spring has 84
coils and is close-wound with a preload
of 80 N.
a) Find the closed length of the spring.
b) Find the torsional stress in the spring
5 mm
corresponding to the preload.
c) Estimate spring rate.
5 mm
d) What load would cause permanent
deformation?
e) What is the spring deflection
corresponding to the load found in part
Sunning length= 100 mm
Assembled length= 180 mm
Free length= 200 mm

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