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Modelling principles

Following terminology is used in the software:

  • Sector - The fundamental part of the cross-section. It is straight centre line of one part of the cross-section between two nodes. The sector is given by the beginning and end nodes and by the thickness.
  • Node - The points on the beginning and end of the sector. The position is given by the coordinates [X,Y].
  • Branch - The group of connected sectors, the program uses two types: closed branches (cells) and open branches.
  • Cell - Closed branch, that have beginning and end node with identical coordinates
  • Open branch - Branch, that does not have identical beginning and end nodes

Modelling principles

Following rules have to be respected when modelling a cross-section:

  • The section cannot contain any separated parts
  • The cells have to be entered before open branches. The cell cannot be inserted into the cross-section, where any open branch already exists.
  • The cells have to be connected by at least one sector (two neighbouring nodes). The input of new cell has to start in some node of already existing cell.
  • The existing nodes of closed cells are considered only at the beginning of the input of new cell. If some node in existing cell is selected after the input of new node, no connection between existing and new cell is considered in this point.
  • If there is some existing cell, first open branch has to begin in some node placed on this cell. Position of first node of open branch is not limited for empty project.
  • Nodes that follow the first node in the open branch are not considered as connected to other branches or cells, even if they have identical coordinates with another nodes. This rule avoids input of closed cells using the input of open branches.

If there are two nodes with identical coordinates, the calculation does not consider any connection in this point.

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