Simcenter 3D Solutions How does "MODAL_DAMPING" calculated in .rmd file during flexible body

2021-10-06T23:26:41Z
Simcenter 3D

Summary

Details

--------------- 

How does "MODAL_DAMPING" calculated in .rmd file during flexible body motion 

analysis.

Solution

 MODEL_DAMPING = CRITICAL_DAMPING * (VISCOUS_DAMPING_RATIO + 0.5 * 

HYSTERETIC_DAMPING_RATIO)

CRITICAL_DAMPING=2 * SQRT(MASS * STIFFNESS) = 2 * MASS * FRQUENCY

The ‘frequency’ in the formula is the ‘angular frequency’, it is 2*PI times of 

the frequency which is displayed in the UI.

Notes

KB Article ID# PL7009571

Contents

SummaryDetails

Associated Components

Acoustics Additive Manufacturing Assembly FEM Correlation and Updating Durability Electromagnetics (High Frequency) Electromagnetics (Low Frequency) Flexible Pipe Laminate Composites Margin of Safety Motion Multiphysics NX Open Nonlinear Optimization Pre/Post Response Dynamics Rotor Dynamics Samcef Environment Simulation Process Management Thermal / Flow