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The module generates influence lines / areas for the load moving along a given track. You can alter the direction and intensity of the moving unit load. The result of the calculation are influence lines and load-systems can be positioned on them. Critical positions are then found for these systems. This is known as utilisation of influence lines. It is possible to automatically calculate the envelope of the most unfavourable effects. Various types of load-systems allow for wider calculation possibilities.
Currently, the evaluation of utilisation is not sufficiently accurate for 2D members and 2D load. The calculation is always simplified into a track and the effect of the width of the 2D load-system is not taken into account. The calculation is always performed along the track.
The whole process necessary for the calculation of influence lines and evaluation of their utilisation is divided into several steps.
Definition of the model of the analysed structure and input of at least one load case.
Definition of the track and unit load.
Calculation that automatically analyses the track and unit load moving along it.
Definition of load-systems, specification of rules for the generation of load cases and evaluation of utilisation.
The subsequent linear calculation generates the envelope load cases and processes the load cases created from the movement of load-systems.