[1]任志英,邱 涛,刘扭扭,等.推进轴系纵向高承载准零刚度隔振器的研究[J].郑州大学学报(工学版),2023,44(01):52-57.[doi:10.13705/j.issn.1671-6833.2022.04.019]
 REN Zhiying,QIU Tao,LIU Niuniu,et al.Research on Longitudinal High Load-bearing Quasi-zero Stiffness Isolator for Propulsion Shafting[J].Journal of Zhengzhou University (Engineering Science),2023,44(01):52-57.[doi:10.13705/j.issn.1671-6833.2022.04.019]
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推进轴系纵向高承载准零刚度隔振器的研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
44
期数:
2023年01期
页码:
52-57
栏目:
出版日期:
2022-12-06

文章信息/Info

Title:
Research on Longitudinal High Load-bearing Quasi-zero Stiffness Isolator for Propulsion Shafting
作者:
任志英12 邱 涛12 刘扭扭12 白鸿柏12 尧杰程12 梁 翼12
1.福州大学金属橡胶与振动噪声研究所,福建福州 350116, 2.福州大学机械工程及自动化学院,福州 350116

Author(s):
REN Zhiying12 QIU Tao12 LIU Niuniu12 BAI Hongbai12 YAO Jiecheng12 LIANG Yi12
1.School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China; 2.Institute of Metal Rubber, Vibration and Noise, Fuzhou University, Fuzhou 350116, China
关键词:
Keywords:
propulsion shafting low frequency vibration isolation disc spring quasi-zero stiffness stability
分类号:
TH113. 1
DOI:
10.13705/j.issn.1671-6833.2022.04.019
文献标志码:
A
摘要:
针对船舶推进轴系纵向低频隔振难的问题,本论文将碟簧与螺旋弹簧并联设计了一种准零刚度隔振器。通过谐波平衡法,求解了轴系-准零刚度隔振器的动力学方程,采用数值计算验证了求解的有效性;综合分析系统响应的稳定性、轴系纵向静变形与并联机构零刚度区间范围,确定了隔振器的非线性刚度与阻尼比;最后通过碟簧静力学和准零刚度隔振器的静力学获得了碟簧与螺旋弹簧相应的结构与力学参数。结果表明,当隔振器非线性刚度取1×1012N/mm3、阻尼比取0.05时,系统稳态响应的解在200Hz内都是稳定的;并且在承受10 000 N载荷时,可以有效隔离10Hz~200Hz范围内的振动。
Abstract:
Aiming at the problem of longitudinal low-frequency vibration isolation of ship propulsion shafting, a high-load quasi-zero stiffness isolator was designed based on disc spring with negative stiffness characteristics and positive-stiffness coil spring in parallel. The dynamic equation of the shafting-quasi-zero stiffness vibration isolation system was established. Through the harmonic balance method, the steady-state response of the system was solved, and the validity of the solution was verified by numerical calculation. For the problem of system response stability, firstly, the influence of nonlinear stiffness of quasi-zero stiffness isolator and external excitation force amplitude on response stability were studied,and combined with the longitudinal static deformation of the shafting, the nonlinear stiffness was determined. Then the specific structural and mechanical parameters of the disc spring and the coil spring were obtained through static analysis. Finally, the influence of damping ratio of quasi-zero stiffness isolator and external excitation force amplitude on the response stability of the system were analyzed, the damping ratio was determined. The results showed that when the nonlinear stiffness and damping ratio were taken as 1×1012 N/m3 and 0.05, respectively, the main resonance of the system no longer jumps, and the solution of the steady-state response of the system was stable within 200 Hz. In the meantime, even with a load of 10 000 N, the quasi-zero stiffness isolator could still effectively isolate the vibration in the range of 10 Hz to 200 Hz.

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更新日期/Last Update: 2022-12-07