設(shè)計(jì)了二自由度兩彈簧振子系統(tǒng)，并進(jìn)行了系統(tǒng)理論模態(tài)分析與ANSYS仿真，通過(guò)激振實(shí)驗(yàn)對(duì)系統(tǒng)進(jìn)行了頻率響應(yīng)特性和模態(tài)分析，研究了系統(tǒng)振動(dòng)動(dòng)態(tài)特性測(cè)試。研究結(jié)果表明，實(shí)驗(yàn)觀測(cè)數(shù)據(jù)、ANSYS仿真結(jié)果與理論分析值較為一致。通過(guò)對(duì)彈簧振子的動(dòng)態(tài)性能測(cè)試和分析，為深入研究機(jī)械振動(dòng)特性提供了參考。
關(guān) 鍵 詞 二自由度兩彈簧振子系統(tǒng); 模態(tài)分析; 動(dòng)態(tài)特性測(cè)試; 頻率響應(yīng)

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