FINITE-ELEMENT ANALYSIS OF DAMPING THE VIBRATIONS OF LAMINATED COMPOSITES

There are several ways of decreasing the vibration energy of structure s, such as diminishing the source energy, designing structures with de sired eigen-frequencies and excitation frequencies, using materials th at have damping properties, etc. Special damping layers made of variou s viscoelastic materials are widely applied in structures subjected to dynamic loading, especially those used in ship building and aerospace technology. A typical structure is that whose basic layer is covered with a damping layer and a thin constraining layer. Such classical san dwich structures have been widely investigated, especially with refere nce to the analysis of elastic vibrations.