19.2.8. Line Body Results

This section examines specific characteristics for results applied to line bodies. Go to a section topic:

Beam Section Results

Using the Beam Section Results property of the Solution object, you can choose whether to display beam results using expanded data when you specify your line body as a beam/pipe that includes cross sections (SECDATA). The choice of whether or not to use expanded data significantly impacts the evaluation, display, and storage requirements for a given line body result. Property options include:

  • No (default): This setting enables you to reduce the amount of result data created by the result. However, the application displays the beam contour results using only the nodal results (one value per node).

  • Yes: For this setting, the application displays beam results with realistic contours that can vary along all coordinates, show stresses and strains as well as deformations, such as torsional rotation.


Recommendation:  Ansys recommends that you set the Beam Section Results property to Yes working with beam and pipe elements. This makes sure that the actual contour values, the deformed shape, and result animations are all using the "true" expanded beam results.



Note:
  • The application always uses expanded results when displaying animations.

  • Probe annotation labels always display expanded results.


Stress and Strain Results for Line Coating (Axisymmetric Shell)

If you scope a Line Coating to stress and strain results, the result displays as a colored line only. Unlike beams, there is no visible element expansion (no visible cross section).

In addition, the Position property displays for stress and strain results scoped to a Line Coating. For the option Top/Bottom, the application only displays Bottom results and generates an associated Message.

Limitations

Note that line body result capabilities have certain limitations, including:

  • Beam strains/stresses always use the solution coordinate system, even if you specify the global coordinate system.

    Because your model may contain solid/shell elements (which support the Global Coordinate System) as well as beams, the stress display of the entire model can contain results in different coordinate systems. Therefore, you will experience under-defined beam stress/strain results, that is, results that will not solve or evaluate, if you perform the following:

    1. Scope a component stress/strain to any line body and;

    2. Choose any coordinate system other than the global coordinate system or the solution coordinate system.


    Note:  If you have shell or solid bodies in your model, you can choose a local coordinate system as long as you do not scope it to any line body.


  • Pipes idealized using elbow elements are not supported.

  • User Defined and User Integrated cross-sections are not supported.

  • Do not currently perform Path interpolation on expanded beams or pipes for element-node-based data, like stress and strain.

  • Linearized stress and stress error (SERR) and equivalent strain are not supported.