针对低频振动对舰船筏架及设备造成的危害，基于准零刚度原理，提出一种船用新型弹簧-凸轮-滚轮式非线性隔振器。基于平均法进行求解，计算出隔振器的幅频特性和振动传递特性；从理论计算和试验验证两方面对其动力学特性进行研究。结果表明，设计的隔振器的起始隔振频率显著低于线性隔振器，表现出更好的低频隔振性能；该含零刚度区间的非线性隔振器在2～16 Hz范围内均有明显的隔振效果。因此，该非线性隔振器可作为一种超低频隔振储备技术应用于舰船筏架及设备低频减振。
Aiming at the harm caused by low-frequency vibration to ship rafts and equipment, based on the principle of quasi zero stiffness, a new type of spring-cam-roller nonlinear vibration isolator with zero stiffness interval for marine was designed. Establish an average method for solving and calculate the amplitude frequency characteristics and vibration transmission characteristics of the isolator. The dynamic characteristics were studied from both theoretical calculations and experimental verification. The results show that the initial isolation frequency of the isolator with zero stiffness zone is significantly lower than that of the linear isolator, exhibiting better low-frequency isolation performance. The vibration isolator has significant isolation effects in the range of 2～16 Hz. Therefore, the nonlinear vibration isolator can be used as an ultra-low frequency vibration isolation reserve technology for low-frequency vibration reduction of ship rafts and equipment.
2025,47(3): 55-63 收稿日期：2024-4-15
DOI：10.3404/j.issn.1672-7649.2025.03.010
分类号：U667.2
作者简介：王雨桐(2000-),女,硕士研究生,研究方向为准零刚度隔振器
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