sens.10 - Dynamic eigenmodes analysis

Eigen frequencies can be required to verify comfort criteria for buildings, to analyse wind-induced resonance for bridges, to check requirements for sensitive equipment....

• Input of dynamic masses
• Selection of desired number of characteristic values
• Review of numerical and graphical results: frequency values, mass participation factors and modal shapes

Input of masses

• User input of nodal masses or linear distributed masses
• Automatic generation of masses from the self-weight
• Generation of masses from selected static load cases (converts downward vertical loads into masses)
• Regeneration of masses after modification of selected load cases

Output of results

• Table output of eigen frequencies for each calculated natural mode
• Table output of mass participation factors according to each global direction (X, Y and Z).
• Graphical display of animated eigenmode shapes

Eigen frequencies can be required to verify comfort criteria for buildings, to analyse wind-induced resonance for bridges, to check requirements for sensitive equipment.... You can apply this analysis type to structures containing surface elements (plates and shells) by performing a few steps:

• Input of dynamic masses
• Selection of desired number of characteristic values
• Review of numerical and graphical results: frequency values, mass participation factors and modal shapes

Required modules:

• sen.00