Six-node shell element (S6)

This is a general purpose triangular shell element. The node numbering and the direction of the normal to the surface is shown in Figure 66.

Figure 66: 6-node triangular element

In CalculiX, six-node shell elements are expanded into three-dimensional wedge elements. The way in which this is done is illustrated in Figure 67. For more information on shell elements the reader is referred to the eight-node shell element in the next section.

Figure 67: Expansion of a 2D 6-node element into a 3D wedge element