Pipe unbending

This command allows to unbend elbows of a shape.

We can then find the geometry of the initial pipe used for the manufacture of bent pipes.

Creation stages / Use:

Click the icon or select the Shape > Other Operations > Pipe Unbending... command from the drop-down menu.

Select the unbending mode (simple or complex).

Select the fixed edge.
Select faces to unbend.

Available options:

Simple elbow:

Allow to manage simple elbow with circular section (toric shape, hollow or full, without hole in faces).

Selection of only one bent face is enough, the complementary face will be selected automatically.

The All option allows to select all elbow of the shape.

Example of Pipe unbending with simple mode

Complex elbow:

Allow to manage complex elbow bend per bend (non circular section, with deformation).

With this mode, you have to select all faces of the elbow. These faces must be connected with the fixed part on one side and on the mobile part on the other side. Border edges on each side must be on a plane (see first image below). Fixed plane and mobile plane must not be parallel. The area inside these two planes is managed unrolling selected faces.

Surface result is authorized on complex deformations.


A : fixed part with fixed plane. B : mobile part with mobile plane.	unbending with deformation of complex pipe	unbending of non circular complex pipe with surface result

Modifications / Additional information:

With simple mode, length of unroll area is calculated from median radius of torus.	With complex mode, length of unroll area is calculated on median radius of fixed section.