Aluminium bar cold forming calculation

  • Thread starter glasvegas
  • Start date
  • #1
3
0
I'm working on a problem that involves calculating force required to form a component. The problem is as follows (diagram attached):

A round aluminium bar, with the initial diameter d0 = 36 mm, has to be cold formed into the component shown in using a combined forward/backward extrusion process. Calculate the force required to form this component. Assume that friction accounts for 55% of the total force and that equation of the work hardening curve for aluminium is σ = 519(0.001 + ε)0.27 MPa.

d1=40 mm
h1 = 90
d2 = 26
h2 = 40
d3 = 31
h3 = 40
α = 45°


I know how to work out ε and then realize that I should integrate σ to get unit plastic work but can't perform this integral. Am a missing some trick or easy way of doing this?

Any help appreciated.
 

Attachments

Answers and Replies

Related Threads on Aluminium bar cold forming calculation

  • Last Post
Replies
1
Views
1K
Replies
21
Views
68K
Replies
1
Views
5K
  • Last Post
Replies
5
Views
7K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
6
Views
18K
  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
5
Views
19K
Top