2. MODELING

CHAPTER 2 "MODELLING" 74 In SCADA Pro it is defined as an octagonal element with 6 seats with the numbering and axis convention shown in the figures above. The first face with nodes 1,2,3,4 is initially defined (always counterclockwise) and based on the thickness given by the designer, the face with nodes 5,6,7,8 is generated in correspondence with the first one (the "generator") and the solid element is created. This element has 6 faces with the numbering shown above. At point 21 is the centre of gravity of the element (centroid). The centres of faces are: Face 1: 22 (Face 1 is perpendicular to the back side of X) Face 2: 23 (Face 2 is perpendicular to the front side of X) Face 3: 24 (Face 3 is perpendicular to the back side of the Y) Face 4: 25 (Face 4 is perpendicular to the front side of the Y) Face 5: 26 (Face 5 is perpendicular to the front side of the Y) Face 6: 27 (Face 6 is perpendicular to the back side of the Y) In all the above points there are no nodes but these points are used to display the results as we will see below. At the centroid and at the above centres (7 points in total) the results are displayed both in Post Processor (in the form of isosceles curves) and in the out file. The nodes of the element have freedom of movement but their nodes do not develop turns. ATTENTION The surface 5,6,7,8 is always generated in the direction opposite to the local Z. This is important in order to knowwhich side to generate the thickness of the wall. Let's illustrate this with an example.