Comprehensive Testing Environment to Evaluate Approaches in Uncertainty Quantification for Passive and Active Vibration Isolation

This contribution introduces a one-mass oscillator subject to passive and active vibration isolation. In this context, passive means that the vibration isolation behavior only depends on preset inertia, damping, and stiffness properties. Active means that additional controlled forces change and adapt the damping properties to enhance the vibration isolation behavior. The purpose of the system is, eventually, to assess diverse measures in quantifying model form uncertainty of various mathematical models of the passive and active vibration isolation configuration in a consistent and comparable way. On the one hand, the one-mass oscillator is simple enough to be modeled analytically to establish a reference model. With its realization as an experimental test environment, it also allows more complex models such as a two-mass oscillator, which is still modeled analytically, and numerical finite and multi-body modeling. The test environment guarantees a consistent and comparable discussion about different approaches to quantify model form uncertainty in an uppermost comprehensive and extended way. First, the author derives the mathematical model for numerical simulation and explains the real test environment. An impulse excites the mass, and the mass responds with vibrations, given by velocity and acceleration responses. Second, preliminary studies for different passive and active damping cases identify the differences between numerical and experimental outcomes from simulation and test. The contribution closes with an invitation to continue and extend the work by a round robin within IMAC's Model Validation and Uncertainty Quantification MVUQ community.