2. MODELING

CHAPTER 2 "MODELLING" 24 FINITE ELEMENTS The types of finite elements you can use in SCADA Pro are generally grouped into 1D elements, 2D elements and 3D elements and are identified by their shapes. For example, elements can take the form of a straight line or curve, triangle or quadrilateral, tetrahedron, and many others. The simplest element is a line consisting of two nodes. All line, straight line or curve elements are called 1D elements and are capable of displacements and rotations. Examples of 1D elements are the truss element (truss) and the beam element (beam3d) SCADA Pro includes : • Ribbed (linear) Network elements with function in space • Ribbed (linear) beam-supporting elements with spatial function • Ribbed (linear) elements of a pedestal on elastic ground with operation in space • Boundary utilities for the simulation of elastic supports at the nodes of linear elements . 2D elements are usually surface elements triangular or quadrilateral. Examples of 2D elements are 3-node triangular element, 6-node triangular element and many others. These surface elements can have regular or irregular shapes as shown in the figure 2D elements are flat elements. Therefore, the linear approximation of the displacements considered are u (x, y) and v (x, y) while the rotations are θ (x, y). Since they correspond to plane stress and simple strain, they are often used to solve 2D elasticity problems. SCADA Pro includes : • Finite surface shell elements (quadrilateral or triangular) • Finite surface shell elements on elastic ground (quadrilateral or triangular) • Finite surface flat deformation elements • Finite plane intensity surface elements for simulating surfaces generated by rotation. • Finite surface elements of flat intensity. • Boundary ancillary elements for the simulation of elastic supports at the nodes of surface elements