Abstract Aiming to attenuate the vibration that is induced by a Gifford-McMahon (G-M) cryocooler, a method attenuating the vibration with mechanical vibration isolators (MVIs) is proposed. A scheme supporting the G-M cryocooler with one kind of supporting system that mainly comprises the MVIs is presented. The vibration response of the supporting system caused by the vibration of the G-M cryocooler are studied, and the effects of the structural parameters of the MVIs are investigated. The results show that reciprocating moving modes of the MVIs induce the modal characteristics of the supporting system, which further formed the vibration response of the supporting system under the excitation of the G-M cryocooler vibration. Structural parameters of stiffness and installation sites of the MVIs affect the reciprocating moving mode of the MVIs, through which the modal characteristics and the vibration response of the supporting system are affected. Through optimizing the installation sites of the MVIs, the vibration response of the supporting system is attenuated. It demonstrates that the method proposed in this paper is available for attenuating the cryocooler-induced vibration in the field of cryogenics and refrigeration.

中文翻译：

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使用机械隔振器衰减 Gifford-McMahon 低温冷却器引起的振动

摘要 为了衰减吉福德-麦克马洪(GM) 低温冷却器引起的振动，提出了一种用机械隔振器(MVI) 衰减振动的方法。提出了一种以MVI为主的支撑系统支撑GM制冷机的方案。研究了由GM低温冷却器振动引起的支撑系统的振动响应，并研究了MVI结构参数的影响。结果表明，MVI的往复运动模态诱发了支撑系统的模态特性，进一步形成了支撑系统在GM低温冷却器振动激励下的振动响应。MVI 的刚度和安装位置的结构参数影响 MVI 的往复运动方式，从而影响支撑系统的模态特性和振动响应。通过优化MVI的安装位置，减弱了支撑系统的振动响应。这表明本文提出的方法可用于衰减低温和制冷领域的低温冷却器引起的振动。