Nonlinear model reduction for control of an active constrained layer damper

One technique to reduce vibrations of low-damped structures is the application of constrained layer damping (CLD) treatments. A unique extension of the CLD is a compressible constrained layer damping (CCLD) where the usually stiff viscoelastic layer is replaced by a compressible one. Due to the adaptable deformation kinematics, as well as compressiondependent material properties, the dynamic behavior of the whole considered structure can be optimized during the operation. One challenge for this application is to determine the optimal compression levels in order to adapt the dynamic behaviour of the component with CCLD to the excitation characteristics. Through the application of finite element model such optimal control strategies can be extensively studied and the dynamics of actuation principle can be included. Herein, low computation times are highly desired, especially for applications where the CCLD undergoes large deformations. This contribution shows how nonlinear model reduction can be applied to accelerate the solution of such finite element models.      «

One technique to reduce vibrations of low-damped structures is the application of constrained layer damping (CLD) treatments. A unique extension of the CLD is a compressible constrained layer damping (CCLD) where the usually stiff viscoelastic layer is replaced by a compressible one. Due to the adaptable deformation kinematics, as well as compressiondependent material properties, the dynamic behavior of the whole considered structure can be optimized during the operation. One challenge for this...     »