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1)  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。
2)  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。
3)  vehicle-bridge interaction
车桥耦合振动
1.
In the paper,based on the theory and method of vehicle-bridge interaction proposed in Ref,the dynamic responses of a schemed Yangtze-River cable-stayed bridge with various vertical girder curve in Nanjing on Jing-Hu high-speed railway,which is of 84+160+488+488+160+84m span,under moving ICE hith-speed trains,are calculated.
本文运用文献[1]提出的车桥耦合振动分析理论与方法 ,针对京沪高速铁路南京长江大桥主跨 84+160 +4 88+4 88+160 +84m三塔斜拉桥方案 ,采用空间杆系单元建立桥梁有限元模型 ,分析了 4种不同主梁竖曲线下ICE高速列车通过桥梁时的车桥耦合振动响应 ,讨论了不同主梁竖曲线对车桥动力响应的影响 ,得到一些有益的结论。
4)  train-bridge coupling vibration
车桥耦合振动
1.
With the finite element method,the train-bridge coupling vibration analysis model of a Yangtze R.
用通用软件ANSYS及车桥耦合振动分析程序VBC计算了该桥的空间自振特性。
2.
A program for spatial analysis of train-bridge coupling vibration is developed on the basis of wheel-rail contact creep theory.
运用基于蠕滑理论的车桥耦合振动空间分析程序,分析了混编货车通过铁路上标准32 m跨径预应力混凝土简支梁时的车桥振动特征。
5)  vehicle-bridge coupling vibration
车桥耦合振动
1.
Comparison shows that when the factor of TICVV is involved into consideration or not,the responses of vehicle-bridge coupling vibration are quite different.
轨道不平顺的速度项对车桥动力响应的影响,在以往车桥耦合振动分析中往往被忽略。
2.
Based on the principle of vehicle-bridge coupling vibration, the vehicle-bridge vibration system is divided into two sub-system of vehicle vibration system and bridge vibration system.
基于车桥耦合振动原理,将车桥振动系统分为车辆和桥梁两个振动子系统,分别采用达朗贝尔原理和直接刚度法建立了模拟汽车的单轴模型、双轴平面模型和双轴空间模型的振动方程,基于梁格理论建立了桥梁结构有限元动力计算模型,通过车轮与桥梁接触点处的几何相容条件和静力平衡条件建立起车辆振动方程和桥梁振动方程之间的联系,采用Newmark-β法实现了对方程组的分组迭代求解,并采用Matlab语言编制了车桥耦合振动专用程序,对程序正确性进行了验证。
3.
By using a numerical analysis method for the highway vehicle-bridge coupling vibration based on the general finite element analysis software ANSYS,the factors having influence on the coupling vibration of the curved bridge are analyzed and the coupling vibration of both the straight bridge and curved bridge is respectively calculated after the unevenness of the deck is taken into account.
采用一种基于有限元通用分析软件ANSYS来实现公路桥车桥耦合振动数值分析方法,对弯桥车桥耦合振动影响因素进行分析,然后分别对直线和曲线连续梁桥考虑了桥面不平整度后车桥耦合振动进行计算。
6)  vehicle-bridge coupled vibration
车桥耦合振动
1.
Influence of bridge surface roughness on vehicle-bridge coupled vibration of long-span suspension bridge
桥面平整度对大跨度悬索桥车桥耦合振动的影响
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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