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TitleTube Bending
File Size1.2 MB
Total Pages104
Table of Contents
                            chapter1-11f.pdf
		1.1 Tube Bending Process
			1.1.2 Compression Tube Bending
Appendix A.pdf
	Creating collectors
	Creating geometry
	Applying boundary condition
                        
Document Text Contents
Page 52

37

-20

-10

0

10

20

0 30 60 90 120 150 180

Angular position (degrees)

C
ha

ng
e

of
r

el
at

iv
e

th
ic

kn
es

s
(%

)

FEA Simulation

Experiment Khodayari [26]



Fig. 4-1 Comparison of change in relative thickness obtained from FEA simulations
with experimental values of Khodayari [26]



0

2

4

6

8

10

12

0 30 60

Bend angle (Degrees)

O
va

lit
y

(%
)

90

Coef. of friction = 0.1

Coef. of friction = 0.2

Coef. of friction = 0.3

Experiment Khodayari[26]



Fig. 4-2 Comparison of ovality obtained from FEA simulations with experimental
values of Khodayari[26]

Page 53

38

4.2 Validation with Mandrel



Stainless Steel SS304 was the material used for the tube. Table 4-2 shows the

mechanical property of Stainless Steel SS304 used for the simulation. Table 4-3 lists the

Simulation parameters used in the analysis. Geometry of the tube is shown in table 4-4.



Table 4-2 Material property of Stainless Steel SS304 (Roll formed and laser
welded)



Material Property Value

Young’s Modulus E (GPa) 210

Poisson’s Ratio 0.3

Strain Hardening coefficient K (MPa) 1451

Strain hardening exponent n 0.6

Initial strain 0 0.06

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