全柔性隔振系统的有限元功率流可视化研究  

Vibration visualization of finite element power flow for fully flexible vibration isolation system

作　　者：李旭[1] 杨斌 刘昌斌 牛军川[2] LI Xu;YANG Bin;LIU Changbin;NIU Junchuan(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,Shandong,China;School of Mechanical Engineering,Shandong University,Jinan 250061,Shandong,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013 [2]山东大学机械工程学院,山东济南250061

出　　处：《山东大学学报(工学版)》2024年第6期176-181,共6页Journal of Shandong University(Engineering Science)

基　　金：国家自然科学基金资助项目(52075294)。

摘　　要：为充分考虑船舰等大型复杂隔振系统的基础和机器柔性、隔振器质量、隔振器布置形式等对振动传递的影响,克服传统建模方法不适用于大型复杂结构的建模和分析问题。分别将柔性的机器和基础视为形状不规则的板结构,隔振器用空间梁模拟,建立考虑机器、基础和隔振器柔性的隔振系统模型。将有限元方法引入隔振系统的振动计算,避免计算机器和基础机械导纳的复杂过程,给出柔性隔振系统的传递功率流表达式。将系统的振动传递进行可视化处理,得到结构的能量分布及功率流传递路径。In order to fully consider the influence of the foundation and machine flexibility of large vibration isolation systems such as ships,the mass and layout of isolators on vibration transmission,and to overcome the issue that traditional methods were not suitable for modeling and analyzing large flexible structures.A new fully flexible isolation system was built,in which the machine and the foundation were regarded as flexible irregular shaped plates,and the space beam was used to model the vibration isolator,respectively.The finite element method was introduced into the vibration calculation of the vibration isolation system to avoid the complex process of calculating the mobilities of the machine and the foundation,and the expression of the transmitted power flow of the flexible vibration isolation system was given.Through visualizing the vibration transmission of the system,the energy distribution and power flow transmission of the structure were obtained.It could be used for reference in the prediction of vibration transmission and vibration isolation design of mechanical equipment.

关 键 词：全柔性隔振系统 有限元方法 功率流 可视化 隔振器布置 

分 类 号：TB535[理学—物理]