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1)  point excitation
点源激振
2)  exciting source in soil region
内源激振
3)  exciting source out of soil region
外源激振
4)  excitation source
激振源
1.
Taking the conditional probable level s artificial curves of the train wheelsetsas the excitation source, this paper calculates the Iateral vibration response,the results of which are found to be in satisfactory agreement with the test.
用具有要求概率水平的轮对人工蛇行波作为激振源,计算铁路钢桁梁桥的横向振动响应,理论计算结果与现场实测良好接近。
2.
In accordance with random vibration energy theory1, and by taking artificial hunting curves of the train frame as excitation source, vibrating responses with 99% probability of the train and bridge system are calculated when a quasi-high-speed train runs through the reinforced concrete multi-span box girder bridge respectively at a speed of 160 km/h and 200 km/h.
本文将准高速列车──桥梁系统视为一个整体,根据随机振动能量理论1以列车构架人工蛇行波为激振源计算了列车分别以160km/h、200km/h速度通过钢筋混凝土连续梁桥时具有99%概率水平的车桥系统振动响应。
5)  single point excitation
单点激振
6)  multiple point excitation approach
多点激振
1.
In the paper the dynamic responses of a multi support structure to an arbitrary excitation waveform is carried out by use of the multiple point excitation approach.
运用多点激振方法,求解多支承结构在任意波形下的动响应。
补充资料:点振子振动和点电极振子振动
分子式:
CAS号:

性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。

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