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1 前言 目前,声学材料中的粘弹性阻尼材料正在越来越广泛地用于军事装备、工业设备及民用领域的减震降噪。通常采用粘弹性阻尼材料对振动和噪声源进行阻尼处理的原理是利用粘弹性材料在玻璃态向高弹态过渡区域具有最大的内耗能量。当振动能量传递到阻尼材料的内部时,将振动能量转化为热能,从而减少共振响应的振幅和加快振动响应的衰
1 Introduction At present, viscoelastic damping materials used in acoustic materials are increasingly being used for damping and noise reduction in military equipment, industrial equipment and civil fields. The principle that viscoelastic damping materials are commonly used to damp vibration and noise sources is based on the use of viscoelastic materials that have the largest energy loss in the transition from the glassy state to the hyper-elastic state. When the vibration energy is transferred to the interior of the damping material, the vibration energy is converted into heat energy, thereby reducing the amplitude of the resonance response and accelerating the vibration response