CADS Footfall Analysis

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CADS Footfall Analysis is a post-processing software that can be used in conjunction with RFEM and RF-DYNAM Pro - Natural Vibrations providing footfall response analysis calculations. Footfall response is of interest to users concerned about the vibration induced in their structures due to walking related activities. As advances in structural design result in more efficient and lighter irregular structures, sensitivity to vibration of the structures is becoming increasingly significant.

Calculation methods:
  • Concrete Centre Method – CCIP-016 – A Design Guide for Footfall Induced Vibration of Structures
  • The Steel Construction Institute Method – SCI P354 – Design of Floors for Vibration: A New Approach

  1. Graphical output of response

    Solution

    There is a known complexity of calculating footfall response on irregular floors or staircases of any type.
  2. Analysis input

    Features

    Footfall Analysis links with RFEM, using its model geometry, so that the user is not required to create a second model specifically for footfall analysis
  3. Eigenmode mass participation graph

    Output

    • Overall maximum response factors and critical nodes
    • Resonant analysis (maximum response factor, RMS acceleration, critical node, critical frequency)
    • Impulsive (transient) analysis (maximum response factor, peak acceleration/velocity, RMS acceleration/velocity, critical node, critical frequency)
    • Vibration dose values for both resonant andimpulsive analyses

    Charts
    • Response factor vs walking frequency
    • Mass participation vs eigenmodes
    • Velocity time history

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