This forum uses cookies
This forum makes use of cookies to store your login information if you are registered, and your last visit if you are not. Cookies are small text documents stored on your computer; the cookies set by this forum can only be used on this website and pose no security risk. Cookies on this forum also track the specific topics you have read and when you last read them. Please confirm whether you accept or reject these cookies being set.

A cookie will be stored in your browser regardless of choice to prevent you being asked this question again. You will be able to change your cookie settings at any time using the link in the footer.

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Combined bends #2
31-01-2017, 01:14 PM, (This post was last modified: 31-01-2017, 01:15 PM by Bas.)
Combined bends #2
If you have an HDD like attached image.
How would you model something like this in PLE4Win?
[Image: combined_bends.jpg]

Attached Files
.pdf   combined_bends_in_HDD.pdf (Size: 89.23 KB / Downloads: 6)
03-02-2017, 11:43 AM,
RE: Combined bends #2
If you want to define a complex bend like this you need to define it through three separate bends: Two part that only bend horizontally and the center part that bends in a different bend plane.
Defining the polygon points for these bend parts is not trivial. Furthermore, we are not sure whether this complex bend is actually possible (without kinks between parts of the bend).

Our approach would be to approximate this situation by using a single bend with the combined bend radius of Rc.
04-02-2017, 07:32 PM, (This post was last modified: 04-02-2017, 07:45 PM by shaswin.)
RE: Combined bends #2
Hello Bas,

You can use the combined bend radius at the tangent point where the overlap exists, see formulae NEN 3650-1:2012 E.


Create also new tangent points as Jens also explains for the horizontal and vertical bends before and after the combined bend. You can do an exact calculation in Excel where the extra tangent points (X,Y,Z) should be. So you have multiple bend radius connecting with each other without any kinks.
05-06-2018, 06:07 PM, (This post was last modified: 06-06-2018, 03:11 PM by shaswin.)
RE: Combined bends #2
It would be nice if overlap of two elastic bends are allowed in the POLYDIF input table. It can be mathematically calculated. Some output tables where the elastic bend radius is given/used should change then with a (partly initial elastic bend radius) + (partly) combined elastic bend radius + (partly initial elastic bend radius) . No cold or hot or mitre bends identifiers should be then allowed between the two elastic bend identifiiers.
19-06-2018, 11:18 AM,
RE: Combined bends #2
Allowing overlapping elastic bends might indeed be a useful addition to the program. I assigned ticket no. J-2203 to this improvement request.
19-06-2018, 11:33 AM,
RE: Combined bends #2
Thank you.

Forum Jump:

Users browsing this thread: 1 Guest(s)