Creation of a Path between Nodes in ANSYS® Mechanical (Workbench) v14.5
Figure 1: ANSYS Mechanical (Workbench) Model with a Path for Stress Linearization
ANSYS Mechanical (Workbench) has a Construction Geometry object to let a user insert a Path or a Surface. A means of creating a Path between nodes of a meshed model is reviewed in this article.
Create a Path for Results Review in ANSYS Mechanical (Workbench)
A user can place a Path along an Edge in WB Mechanical, or between two points. The Two Points approach can use vertices, or model face locations. To start with creation of a Path, a model needs a Construction Geometry branch:
Figure 2: Addition of a Construction Geometry Branch at the Model Level
One or more Paths or Surfaces can be inserted into the Construction Geometry branch:
Figure 3: Insertion of a Path
The user must enter Details for a new Path to complete its definition. The path should be named appropriately.
Before proceeding, if the use of two nodes to define a Path is wanted, it helps to make the mesh visible:
Figure 4: Show Mesh to Aid in Selecting Path Points
After clicking on the Path entry in Construction Geometry, a Path Type based on “Two Points” can be selected. That requires definition of the Start and the End points for the path:
Figure 5: The Two Points Method of Path Definition
“Two Points” typically selects two vertices. A toolbar icon can be used to select locations on faces in the model:
Figure 6: Hit Point Coordinate for the Two Points Method for Path Definition
Each of the two points can be defined in turn. First the Location of the Start is chosen:
Figure 7: Click on the "Click to Change" Line for Location
The “Click to Change” box changes to provide an Apply button:
Figure 8: Click to see the Apply Button
Then, go to the graphics window to click on a location for the first point on the path. Rotate and zoom the model so that the element faces where the first node is to be chosen are visible, as illustrated below.
Click very close to the first node to be chosen, zooming as required:
Figure 9: Clicking Close to the First Node
After clicking on the location on the surface, right-click the mouse, and select “Snap to mesh nodes”...
Figure 10: Snap to Mesh Nodes
Then, click the Apply button for the Start point:
Figure 11: Apply to Define Start Point at Node
Now repeat for the node at the other end of the path. Rotate the model as needed. Click on the Location box for the End point so that Apply appears:
Figure 12: Defining the End Point for the Path
Now click close to the location of interest for the End point, right-click and choose “Snap to Mesh Nodes”, and go back to the Location box and click the Apply button. The path should appear as desired, travelling between two nodes on exterior faces of the model:
Figure 13: The Resulting Path between Nodes
Once the path exists, results of interest can be mapped onto the path for postprocessing purposes, including linearized results that may be of interest when satisfying design codes.
A linearized stress can be inserted below the Solution branch for an environment of interest.
Figure 14: Insert a Linearized Stress Results Object
The Path of interest can be chosen by name from a drop-down list in the Details for the linearized result:
Figure 15: Choose the Path of Interest by Name from the Drop-Down List
With a path for data mapping chosen, right-click at the Solution branch, and choose “Evaluate All Results” to see the linearized stress plot and data.
The results of the path linearization can be observed, and optionally promoted to parameters, as needed:
Figure 16: Path Linearized Stress Result
Many paths can be created, and for any given path, many linearized results can be defined and observed.
There are tools in ANSYS Workbench Mechanical that permit Paths for stress linearization to be created between node pairs, not just between pairs of vertices, or along edges in a model. Turning on a mesh view with “Show Mesh”, and using “Snap to Mesh Nodes” makes it possible to position the desired path Start and End point so that the path terminates at existing nodes in the model.
Objects for reviewing linearized results on paths can be inserted for postprocessing at the Solution branch in the Workbench Mechanical Outline. Various solution results can be mapped onto each of the paths created in a model. The stress linearization output should help in the satisfaction of various design codes of interest to a user.