3D Design

ANSYS APDL: Convert 2D-axisymmetric model to a 3D model

• Shwanne Sánchez Damas
Subscriber

Good afternoon,

I briefly describe what I do. Initially I have a wire that goes through a drawing process which has been generated in a 2D-Axisymmetric model (Figure 1). The element type for the wire is PLANE82, with the axisymmetric property active. So when the wire goes through the drawing I get a wire with residual stresses and on that wire I need to perform a torsion test (Figure 2). In other words, I need to generate a 3D model of the wire from the 2D-Axisymmetric wire to be able to run the torsion test on this 3D wire. I've searched a lot but honestly I can't find any ideas on how to achieve it. Any suggestion is welcome, I will be very grateful. Thank you very much in advance.

• Vigneswaran Sridharan
Ansys Employee

Hi,

Try performing a general axisymmetric analysis of the model. This analysis behaves like a 2D-axisymmetric analysis with additional DOF for bending and torsion.

I recommend watching this AIC video to understand how to convert 2D to 3D models.

" target="_blank" rel="noopener">Efficiently Analyzing Structures with a Constant 2D Profile Using Ansys Mechanical

In MAPDL, use Plt Ctrls>>Style>>Symmetry Expansion>>2D-axisymmetry as an equivalent command to symmetry option in WorkBench.

Performing a 2D to 3D Analysis

Thanks!

• Shwanne Sánchez Damas
Subscriber

• Vigneswaran Sridharan
Ansys Employee

Hi,

(to understand how to convert 2D to 3D models.)

Geometry Representation - ANSYS Innovation Courses

Performing a 2D to 3D Analysis

Thanks!

• Shwanne Sánchez Damas
Subscriber

I thank you very much for your answer. I have an additional question, in reference to this post, my goal now is to perform a nonlinear torsion test on this 2D-Axisymmetric result. So I would like to know if any of these possibilities exist in ANSYS APDL:

1. Directly apply the torsion moment in the obtained 2D-Axisymmetric model, since in the manual where it describes the elements, it indicates that this element has the following:

PLANE 182:

KEYOPT(3)

Element behavior:

6 -- Axisymmetric with torsion (KEYOPT(1) = 0 only)

So, can torsion be applied directly to this result in 2D-Axisymmetric?

2. Convert this 2D-Axisymmetric model into a 3D model to apply the torsion moment, since I not only want to visualize the model in 3D, but to be able to apply the torque/torsion moment there to perform the non-linear torsion analysis.