【摘要】 针对海水泵工作过程中的旋转振动问题，结合实测振动特性，基于准零刚度隔振原理和超结构带隙特征设计了准零刚度环状超结构隔振器用于振动控制。首先，以典型海水泵为研究对象，以一体化准零刚度结构为基础，提出了环状超结构隔振器的结构方案。然后，分别采用有限元法和理论法建立了准零刚度单胞、一维准零刚度超结构、准零刚度环状超结构隔振器的模型，计算并分析了其静、动态力学特性，并评估了其对海水泵输出振动的隔振效果。计算分析及试验结果表明，准零刚度环状超结构隔振器可在低频构建多个带隙，对海水泵典型频率的振动控制效果显著。更多还原

【Abstract】 Addressing the rotational vibration issues encountered during the operation of seawater pumps, and integrating measured vibration characteristics, a quasi-zero stiffness ring meta-structure isolator was designed for vibration control based on the principles of quasi-zero stiffness isolation and the bandgap features of meta-structure. First of all, taking a typical seawater pump as the research object and based on an integrated quasi-zero stiffness structure, a structural design scheme of the ring meta-structure isolator was proposed. Then, models of quasi-zero stiffness unit cell, one-dimensional quasi-zero stiffness meta-structure and quasi-zero structure ring meta-structure isolator were established using finite element method and theoretical method, respectively. Their static and dynamic mechanical characteristics were calculated and analyzed, and their isolation effect on the output vibration of seawater pumps was evaluated. The calculation and test results show that the quasizero stiffness ring meta-structure isolator provides multiple bandgaps at low frequencies, and exhibits significant vibration suppression effects on typical frequencies of seawater pumps.更多还原