Modal test and analysis of dump truck frame 自卸汽车车架模态试验与分析
It is the first time applying modal test to large composite - material antenna 首次将模态试验的方法用于星载大型复合材料天线。
4 . a cantilever beam is used as a testing example and the results show that the whole newly developed system is effective 4 .对一个小型悬臂梁进行纯模态试验,检验试验系统的实用性和可靠性。
But it takes much time to tune the exciting force , and the testing precision is decided much by the operator ' s experience 但纯模态试验周期较长,且识别精度在很大程度上取决于操作人员的水平和经验。
Model test analyses and natural frequency measurement methods of large turbo - generators on stator end windings and evaluation criteria 大型汽轮发电机定子端部绕组模态试验分析和固有频率测量方法及评定