Hello
I need to extrude a cladding sheet from its neutral fiber, how would you do it?
Thank you for your help
Fred
Hello
If it's just to have the volume:
Extrusion with thin function in the middle plane.
Good luck...
4 Likes
And then otherwise, from the Sheet Metal module, you check " symmetrical " under Sheet Metal settings 
4 Likes
What do you call neutral fiber? The neutral fiber depends on the thickness.
Otherwise, sketch the profile, make an extrusion and then convert to sheet metal.
That said, I don't really see the point since the positioning of the neutral fiber depends on the thickness (K factor)
3 Likes
This is my neutral fiber, and the thickness of my sheet metal is 1mm.
1 Like
Hello
If the bend radii are known, then it is possible to use the table below:
Inner radius x factor thickness = neutral position of the fibers
0.2 ——————————— 0.347 x thickness
0.5 ——————————— 0.387 x thickness
1 ———————————— 0.421 x thickness
2 ———————————— 0.451 x thickness
3 ———————————— 0.465 x thickness
4 ———————————— 0.470 x thickness
5 ———————————— 0.478 x thickness
10 ———————————- 0.487 x thickness
Where to use the K-Factor:
| 0.65>r/t<=1 | k=0.3 |
|---|---|
| 1 | k=0.35 |
| 1.5 | k=0.4 |
| 2.4 | k=0.45 |
| 3.8 | k=0.5 |
If the sketch of the screenshot is indeed the " Neutral Fiber " uses the proposal of @a_eriaud and @Le_Bidule with two dimensioned extrusions (Thin Function + two directions), then transformation of the body obtained into sheet metal... Like what:
4 Likes
Thank you all for your answers. 
Cdt
Fred
1 Like