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Aspect Ratio Mesh Metric In ANSYS® Meshing(Illustrated Expression)

Mesh metrics in ANSYS® Meshing is a very useful tool to assess the different features of created mesh structures. All these mesh metrics are explained in Mechanicalland and we strongly recommend you to learn these mesh metrics individually. One of these mesh metrics is ‘Aspect Ratio’ in ANSYS® Meshing. In this article we will explain the;

  • How to see the ‘Aspect Ratio’ mesh metric in ANSYS® Meshing?
  • What is ‘Aspect Ratio’ in ANSYS® Meshing?
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Explanation Of Aspect Ratio Mesh Metric In ANSYS® Meshing

Select ‘Aspect Ratio’ mesh metric in ANSYS® Meshing.

To see the individual aspect ratios of mesh elements in ANSYS® Meshing, click on the ‘Mesh’ tab as shown in the red box above then select the ‘Aspect Ratio’ as shown by the green box above in Statistics, Mesh Metric shown in the red arrow.

Aspect ratio information in ANSYS® Meshing.

After selecting the ‘Aspect Ratio’, you can see the minimum, maximum, average, and the standard deviation of the aspect ratio of mesh structure from in the green box above. Also, there is a chart that shows the aspect ratio and the number of elements for each type of mesh element that is used in mesh structure in ANSYS®.

The ‘Aspect Ratio’ for quadrilaterals and triangles is calculated differently as shown below.

Aspect ratio examples of triangle structures in ANSYS® Meshing.

As you can see above, the best possible aspect ratio for triangular shapes is 1, an aspect ratio of 1 means an equilateral triangle. There is another aspect ratio example is given above that is 20. You can see it has a very warped geometry compared with the other one.

The aspect ratio for quadrilateral structures.

As you see above, the most possible aspect ratio is 1 again for quadrilateral mesh structures in ANSYS®. If it is 1 for quadrilaterals, it means this mesh element is square as above. Also if the aspect ratio of a quadrilateral element is 20, the mesh element is very warped as you see above.

Conclusion

In general, a lower aspect ratio means more high-quality mesh structures in ANSYS®.

Leave your comments and questions about the ‘Aspect Ratio mesh metric in ANSYS®’ below.

NOTE: All the screenshots and images are used for educational and informative purposes. Images used courtesy of ANSYS, Inc.

Source Of Images: ANSYS® Meshing User’s Guide

Comments

2 responses to “Aspect Ratio Mesh Metric In ANSYS® Meshing(Illustrated Expression)”

  1. Adriana Camera Avatar
    Adriana Camera

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