FAQ 002389 EN

11 February 2019

Markus Baumgärtel Modeling | Structure SHAPE-THIN

I would like to create a cross‑section consisting of several elements in SHAPE‑THIN. However, I do not succeed to connect the elements in such a way that they act as a single entity.

Answer

Elements are connected together if you have a common node. Thus, Elements 1 and 2 shown in Figure 01 are connected by Node 2.

If there is no common node available, you can create a shear-rigid connection by using a null element. In the case of the null element, the normal thickness t is equal to zero. However, the shear thickness t* must be greater than zero. Determination of the shear thickness t* is required for the null elements that are not affected by 'normal' elements (t > 0) along their entire length. It is recommended to specify the thickness of the thinnest element adjacent to the null element.

A null element can be defined manually or created by using the 'Connect node and element' function. Please make sure that the connection is always created by using nodes of the elements and not help points (see Figure 02).

Keywords

Connect elements Null element Non-connected Shear rigidity

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Cross-Sections Thin-Walled
SHAPE-THIN 8.xx

Cross-Section Properties Software

Section properties, stress analysis, and plastic design of open and closed thin-walled cross-sections

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