Dynamic Train Crossing

Vibration check for a train crossing
Vibration check for a train crossing

Using the 'dynamic train crossing' function, the dynamic stress can be analyzed with ease for any beam and shell structure with predefined trains, such as the ICE, Thalys, etc. or user-defined trains.

Tracks

Tracks of a train meeting
Tracks of a train meeting

The description of the tracks is carried out by entering any continuous line on the structure. Multiple track can be considered simultaneously, so that, for example, the effect trains traveling in opposite directions have on each other can be investigated.

Train Definition

Train definition with speed specification and departure time
Train definition with speed specification and departure time

The load model of the typical trains for high-speed lines are stored in the program. Additionally, user-defined train loads can be added. Further default parameters are the speed and the departure time for each train. Every train is assigned to one track. By varying the departure times, the intervals between the different trains can be defined.

Calculation

The dynamic train crossing can be analyzed as part of a direct or modal time-step integration. The amount and duration of the time steps can be entered by the user. The vibration behavior and the desired route of the train are taken into consideration.

Results

Time curve of displacement uz at a selected node
Time curve of displacement uz at a selected node

Results are calculated for the deformations, speeds, and accelerations, as well as the internal forces for every time step. These can be represented individually or as time-step diagrams. Additionally, the deformation can be dynamically animated in the System Viewer. Exclusive combinations of the results are available for further analysis.