1. 实验目的.........................................................1
2. 实验装置.........................................................1
2.1 试件及传感器的布置 .......................................... 1
2.2 采集系统设置 ................................................ 2
3. 实验数据处理.....................................................2
3.1 1 号传感器与力锤的时域分析................................... 2
3.2 1 号传感器与力锤的频域分析................................... 3
4. 1 号传感器与力锤的频响函数估计 ................................... 5
4.1 H1 估计...................................................... 5
4.2 H2 估计...................................................... 6
4.3 H1、H2 与频响函数之间的比较.................................. 7
5. 估算模态参数.....................................................8
5.1 固有频率、阻尼比的估算 ...................................... 8
5.2 ANSYS 建模进行模态分析....................................... 8
5.3 振型图 ..................................................... 10
5.3.1 一阶振型..............................................10
5.3.2 二阶振型..............................................11
5.3.3 三阶振型..............................................11
