【作者】 赵存生； 朱石坚；

【Author】 Zhao Cunsheng;Zhu Shijian;

【机构】 海军工程大学；

【摘要】 通过动力学分析研究了基座阻抗对隔振系统力传递率和传递功率流的影响,考虑基座阻抗后对被隔振物体的自然频率影响不大,得出了最重要的影响是改变(通常减少)了隔振系统的有效阻尼的结论。在激励频率为2～4倍系统频率时,功率流传递率最小;隔振系统的阻尼比越小越好,但考虑到系统稳定性和柔性基础的折减效应,应具备一定阻尼,以0.2左右为宜。更多还原

【Abstract】 The force transmission rate and power flow transmission of vibration isolation system were studied through the dynamic analysis of base impedance in the paper.The conclusion that influence of base on the natural frequency of vibration isolation system is not very serious,the most important influence that changing(typically reducing) the effective damping of vibration isolation system is drawn.When the excitation frequency is 2～4 times the frequency of the system,the power flow transmission rate is minimum.While the damping ratio of isolation system is the smaller the better,it is taken 0.2 for suitable considering the stability of the system and the reduction effect of the base.更多还原