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1)  vibration of deck
桥面振动
1.
A study is made of the effects of vibration of deck on the non-uniform cross-sectional stress distribution on short suspenders of arch bridges with vertical suspenders.
研究了桥面振动对拱桥短吊杆截面应力不均匀分布规律的影响。
2)  bridge vibration
桥梁振动
1.
Theoretical analysis of low-frequency noise radiated from bridge vibrations;
桥梁振动辐射低频噪声评估方法研究
2.
Based on the 1/4 models of motorcar,the model of simple supported beam was used with constant moving load to simulate bridge vibration and the half sine curve was used to simulate the bridge floor longitudinal curve when bridge upwards formed.
基于1/4汽车模型,采用常量力移动荷载模型模拟桥梁振动,以及半正弦曲线模拟桥梁上拱后所形成的桥面纵坡曲线,分别建立了由桥梁振动和桥梁上拱引起的车辆振动响应方程,分析比较了以上2种情况对车辆振动的影响。
3.
The train-bridge vibration characteristic is analyzed by this program when mix-marshalling freight trains traverse a 32-meter-span prestressed concrete simple beam bridge.
从列车在不同加载位置对桥梁的作用以及桥梁对车辆的反作用的角度出发,结合车桥的动力特性,揭示了混编货车过桥时,一般桥梁振动响应较大、轻车容易发生脱轨事故的机理——混编货车由于轴重差别显著,对桥梁产生周期性的大幅值的强迫荷载,导致桥梁振动剧烈,而桥梁的振动加剧又对轻车产生强烈的反作用。
3)  vibration of vehicle-bridge
车桥振动
1.
A simplified computing method considered initial stress effect and geometrical non-linearity of cable-stayed bridge for analyzing vibration of vehicle-bridges is applied.
将随机桥面平整度描述为零均值的平稳高斯随机过程,建立了大跨度斜拉桥空间有限元模型,考虑结构的初始应力效应和几何非线性因素,提出了一种斜拉桥车桥振动分析的简化方法。
2.
A simplified computing method considering initial stress effect and geometrical non-linearity of cable-stayed bridge for analyzing vibration of vehicle-bridges is presented based on the second development of ANSYS.
基于ANSYS的二次开发功能,考虑结构的初始应力效应和几何非线性因素,提出了一种大跨斜拉桥车桥振动分析的简化方法,给出了运用APDL(ANSYSParametricDesignLanguage)语言编制分析程序的步骤和过程。
4)  vehicle-bridge vibration
车桥振动
1.
The author computes the vehicle-bridge vibrations of the common simply supported-continuous box beam bridges and analyses the dynamic capability resulted from bridge deck pavement and the change of cross-sections size and vehicle velocity.
同时详细分析桥面铺装、截面尺寸和行驶车速的变化等对该类桥型的车桥振动动力特性的影响,得到影响该类桥车桥耦合振动性能的关键因素,并提出设计建议。
5)  girder bridge vibration
梁桥振动
6)  Vibration of bridge
桥梁振动
补充资料:点振子振动和点电极振子振动
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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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