Calculate the blank size of the figure shown and locate bending lines: The thickness of the sheet t is 4 mm. R= 1.5t A = 60 mm A 90° R B= 200 mm R C= 60 mm 90° If bend radius is small relative to stock (Hint) thickness, metal tends to stretch during bending B A ВА - 2л -(R+K) 360 where BA = bend allowance; A = bend angle; R= bend radius; t= stock thickness; and K, is factor to estimate stretching If R< 24, K = 0.33 If R 224 K = 0.50

Calculate the blank size of the figure shown and locate bending lines: The thickness of the sheet t is 4 mm. R= 1.5t A = 60 mm A 90° R B= 200 mm R C= 60 mm 90° If bend radius is small relative to stock (Hint) thickness, metal tends to stretch during bending B A ВА - 2л -(R+K) 360 where BA = bend allowance; A = bend angle; R= bend radius; t= stock thickness; and K, is factor to estimate stretching If R< 24, K = 0.33 If R 224 K = 0.50

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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Concept explainers

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

Calculate the blank size of the figure shown and locate bending lines:
The thickness of the sheet t is 4 mm.
R= 1.5t
A = 60 mm
A
90°
R
B= 200 mm
R
C= 60 mm
90°
C
If bend radius is small relative to stock
(Hint)
thickness, metal tends to stretch during
bending
B
A
ВА - 2л
-(R+K)
360
where BA = bend allowance;
A = bend angle;
R= bend radius;
(= stock thickness;
and K, is factor to estimate stretching
If R< 24, K = 0.33
If R 224 Kp = 0.50

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