摘要
浮筏隔振技术已在船舶的减振降噪中取得显著的进展,对于大型船用设备的浮筏隔振装置,需要使用较多的隔振器来承担设备重量,且隔振效果也欠佳。为改善大型船用设备浮筏隔振系统的隔振性能,节约隔振器成本,以船用柴油发电机组为隔振对象,比较气囊型隔振器和橡胶型隔振器的特点,提出四种浮筏隔振系统方案,并利用ANSYS有限元软件对四种方案进行仿真分析,采用振级落差法对各方案隔振性能进行评估。结果表明:双层气囊浮筏隔振系统方案的隔振性能更为优越,方案优化后可以有效减少隔振器的使用数量,能够充分解决大型设备的隔振问题,为以后大型装置浮筏系统的设计提供参考。
Floating raft vibration isolation technology has been significantly developed in ship vibration and noise reduction.For the floating raft vibration isolation system of large-scale marine equipment,quite a few vibration isolators are needed to bear the weight of the equipment,but their vibration isolation effect is not good.In order to improve the vibration isolation performance of the floating raft vibration isolation system for large-scale marine equipment and save the cost of vibration isolators,the characteristics of the airbag type vibration isolator and the rubber type vibration isolator of the marine diesel generator sets are compared,and four schemes of floating raft system solutions are proposed.The four schemes are simulated and analyzed by ANSYS finite element software,and the vibration isolation performance of each scheme is evaluated by the vibration level drop method.The results show that the vibration isolation performance of the double-layer airbag floating raft vibration isolation system is the best.After the optimization of the scheme,the number of vibration isolators required can be greatly reduced,and the vibration isolation problem of large-scale equipment can be fully solved.This work provides a reference for the design of floating raft systems for large equipment.
作者
肖程诗
吴绍维
王俊
韩国文
XIAO Chengshi;WU Shaowei;WANG Jun;HAN Guowen(School of Shipping and Naval Architecture,Chongqing Jiaotong University,Chongqing 400074,China;Yunnan Special Equipment Safety Testing Research Institute,Kunming 650228,China)
出处
《噪声与振动控制》
CSCD
北大核心
2022年第3期25-29,35,共6页
Noise and Vibration Control
基金
国家自然科学基金资助项目(51909016)
重庆市教委科学技术研究资助项目(KJQN-201900705,KJZD-K202100702)
重庆市自然科学基金面上资助项目(cstc2020jcyj-msxmX0070)
船舶动力工程技术交通运输行业重点实验室开放基金资助项目(KLMPET2019-04)。
关键词
振动与波
大型设备
浮筏
气囊隔振器
有限元分析
振级落差
vibration and wave
large equipment
floating raft
airbag vibration isolator
finite element analysis
vibration level drop
