High Damping Passive Launch Vibration Isolation System Using Superelastic SMA with Multilayered Viscous Lamina

Viscous damping identification in linear vibration

Parametric identification of viscous damping models in the context of linear vibration theory is studied. Frequency domain identification methods based on measured frequency response functions (FRFs) are considered. Existing methods are classified into two main groups: matrix methods which use directly the measured FRF matrix, and modal methods which use modal parameters deduced from the FRFs. ...

Passive vibration isolation using a Roberts linkage

November2002 The article presents a new ultra-low frequency passive vibration isolation device as part of the pre-isolation stage for AIGO (Australian

Retrofitting A Passive Vibration Isolation System with Zero-Compliance Modules

A vibration isolation module with zero-power magnetic suspension is developed to retrofit a passive vibration isolation system to improve the performance against direct disturbance. In the module, the zero-power magnetic suspension mechanism is connected in series with a normal spring through a middle mass. This structure can generate zero compliance to direct disturbance while the transmitted ...

Vibration Damping of High-Chromium Ferromagnetic Steel

The aim of the present work is to study the effect of annealing on the vibration damping capacity of high-chromium (16%) ferromagnetic steel. The alloys were prepared from raw materials of 99.9% purity melted in a high frequency induction furnace under high vacuum. The samples were heat-treated in vacuum at various temperatures (800 to 1200oC) for 1 hour followed by slow cooling (120oC/h). The ...

Large-Amplitude Vibration of Imperfect Rectangular, Circular and Laminated Plate with Viscous Damping