二自由度两弹簧系统振动实验设计与分析

设计了二自由度两弹簧振子系统，并进行了系统理论模态分析与ANSYS仿真，通过激振实验对系统进行了频率响应特性和模态分析，研究了系统振动动态特性测试。研究结果表明，实验观测数据、ANSYS仿真结果与理论分析值较为一致。通过对弹簧振子的动态性能测试和分析，为深入研究机械振动特性提供了参考。
关 键 词 二自由度两弹簧振子系统; 模态分析; 动态特性测试; 频率响应

Design and Analysis of a Two-Spring-Two-Freedom Vibration System
DONG Zheng，CAI Shuang，XU Lim-ei，HUANG Dag-ui
(School of Mechatronic Engineering, Univ. of Electron. Sci. & Tech. of China Chengdu 610054)
Abstract this paper presents a two-spring-two-freedom vibration system. The theoretic modal analysis and computer simulation of this system are given. Through vibration experiment, both the frequency response characteristic and modal characteristic are analyzed. The experimental method of how to test the dynamic characteristic of vibration system is also researched. The results demonstrate that the vibration experiment, computer simulation and theoretic analysis are commendably consistent.
Key words two-spring-two-freedom vibration system; modal analysis; dynamic characteristic test; frequency response