Footfall analysis chart

The Chart view for Footfall induced vibration analysis shows the plots of: response factors vs. walking frequency, velocity vs. time, and participation factor vs. modes etc for the selected response node and excitation node. The settings include:

Items to be plotted (tree control)

The selected items will be plotted in the opened chart views. Multiple selection can be made and it will result in multiple chart views being opened.

Footfall analysis task

If more than one set of footfall analysis results (tasks) exist it needs to know which set of results are to be used. If only one footfall analysis task is available, it will be used in generating the chart views.

Response node

The response node number used for the plot. It can be typed in or selected from the list. It must be a single node number.

Excitation node

The excitation node number used for the plot. It can be typed in or selected from the list. It must be a single node number.

Criteria of response factor

This is used for comparison with the calculated responses of acceleration vs. harmonic forcing frequency and velocity response vs. walking frequency in the chart views. Two criteria can be selected which can be response factors or selected from standard criteria. The selected criteria will be represented by two curves on the chart views. The two criteria curves can be used to tell how far/close of the calculated responses from the criteria. It will not be used for other plots, so it is disabled if these two plots are not selected on the tree control.

Walking frequency

The walking frequency to be used in velocity vs. time plot. It will not be used for other plots, so it is disabled if velocity vs. time plot is not selected on the tree control.