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    • 8. 发明授权
    • Acoustic/shock wave attenuating assembly
    • 声/冲击波衰减装置
    • US5394786A
    • 1995-03-07
    • US81998
    • 1993-06-30
    • Guy L. GettleVincent H. Homer, Jr.
    • Guy L. GettleVincent H. Homer, Jr.
    • E04B1/82E04B1/84E04B1/98F42D5/045F42B33/00
    • F42D5/045E04B1/82E04B1/8209E04B1/8218E04B1/98E04B2001/8428E04B2001/8457E04B2001/8461
    • An acoustic/shock wave attenuating assembly comprised of porous screens forms an enclosure filled with a suitable pressure wave attenuating medium or material having fluid characteristics. This basic configuration can be suspended or held in place by a rigid structure. When the pressure attenuating medium is a liquid, the attenuating assembly is provided with a lining for containment. Multiple attenuating assemblies can be employed, with adjacent attenuating assemblies separated by a small gap. The pressure attenuating medium may be a liquid, a gas emulsion, an aqueous foam, or a gel (with or without entrained gas). Alternatively, solid particulates having bulk mechanical properties of a fluid may be employed as the pressure wave attenuating medium and may have an adhesive or the like resisting relative movement between particulates to simulate viscous effects. Elements of the assembly may incorporate materials which absorb thermal energy through endothermic chemical reactions, such as intumescent materials, to enhance the pressure attenuating effect.
    • 由多孔筛组成的声/冲击波衰减组件形成一个充满适当压力波衰减介质或具有流体特性的材料的外壳。 这种基本配置可以通过刚性结构暂停或保持在适当位置。 当压力衰减介质是液体时,衰减组件设置有用于容纳的衬里。 可以使用多个衰减组件,其中相邻的衰减组件以小间隙分开。 压力衰减介质可以是液体,气体乳液,含水泡沫或凝胶(具有或不具有夹带气体)。 或者,可以使用具有流体的体积机械性质的固体颗粒作为压力波衰减介质,并且可以具有抵抗颗粒之间的相对运动的粘合剂等以模拟粘性效应。 组件的元件可以包括通过吸热化学反应吸收热能的材料,例如膨胀材料,以增强压力衰减效果。