Question:
When calculating a buckling panel, I get a message saying that some elements are connected to the panel, but they are not defined as stiffeners. What should I do?
Answer:
If the stiffeners resting in the panel are not defined explicitly as stiffeners, the message shown in Image 01 appears.
The stiffeners are defined in Table "1.8 Stiffeners" or in the "New Stiffener" dialog box (Image 02). Specify the elements belonging to the stiffener. In the case of angles, trapezoidal stiffeners, and so on, the stiffener is represented by several elements. If the stiffener represents a cross-section from the cross-section library, it must be divided into the elements first.
The panel shown in Image 03 includes Elements 1 through 3. Elements 8, 9 and Elements 10, 11 are connected to the panel. However, they are not defined as stiffeners, so the message shown in Image 01 is displayed. It is necessary to define Elements 8, 9 and Elements 10, 11 as stiffeners in Table "1.8 Stiffeners" or in the "New Stiffener" dialog box (Image 04).