Question:
When selecting the elements for a stiffener of a stiffened panel, I get a message saying that at least one of the selected elements is a null element. What should I do?
Answer:
Stiffeners may only contain elements with a thickness t > 0 mm. If you select null elements (thickness t = 0 mm), the message shown in Image 01 appears. It is necessary to replace the null elements with elements with a thickness t > 0 mm.
The stiffener shown in Image 02 includes Element 8 and Element 3. However, Element 3 has thickness t = 0 mm, so the message in Image 01 is displayed. For Element 3, define a thickness t > 0 mm. As an alternative, you can delete Element 3 and connect Element 8 directly to the panel. This is also shown in the video.
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