Modal Sensitivity

The modal sensitivity study can be performed on complete E-Lines or a selected Node pair belonging to an E-Line. Once the RMC is done and determine the modes that exhibit maximum contribution to the relative displacements that lead to squeak and rattle, you can study the effect of particular mode(s) on the total response. SnRD computes the total response (relative displacement) based on the equation of motion without need to simulate again. This enables to understand the potential of a design change that leads to damping or eliminating a certain mode shape.

Chosen modes can be Included or Excluded from the results and displacements recalculated to observe their effect on the squeak and rattle performance.

To do a modal sensitivity study, you have to select the Modal Sensistivity button in Modal Sensitivity studies tab.

Below is the Modal Sensitivity studies panel.
Below are the operations that a you can perform in Modal Sensitivity panel -