The program can calculate modal shapes and critical speeds, analyze the stability of the rotor system.
开发的程序可以计算转子各阶模态振型与临界转速，进行稳定性的分析。
This experiment method has some reference value on testing the 3-dimension modal shapes of a structure by using a single scanning laser vibrometer.
该实验方法对于采用单头激光测振仪测试结构的三维整体模态具有一定的参考价值。
The modal parameters of the printed circuit board (PCB) were calculated using finite element method, and the weaknesses of PCB were found using effective modal masses and mode shapes.
采用有限元方法对印制电路板进行了模态分析，依据有效模态质量和模态振型分析了振动环境下配制电路板的薄弱环节。
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