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1)  Induced vibration
诱发振动
1.
It is found that the vibration induced by the excavation of tunnel under high in-situ stress is the result of superposition of blasting-induced vibration(BIV) and the transient unloading of in-situ stress induced vibration(DUIV).
发现高地应力条件下深埋隧洞钻爆开挖诱发的围岩振动由爆破振动和岩体初始地应力(开挖荷载)动态卸载诱发振动两部分叠加而成。
2.
In the derivation both the induced vibration and couple vibration were considerd.
在方程的推导过程中,既考虑了流体速度对管道的诱发振动,又考虑了振动的管道对流体的反馈作用。
2)  thermally induced vibration
热诱发振动
1.
To make clear the mechanism of thermally induced vibrations is the base of understanding thermally induced vibrations failure.
空间结构在辐射换热条件下的热诱发振动是导致空间结构失效的一种典型模式。
2.
A method was developed to analyze thermally induced vibrations of large space structures based on the finite element method and modal analysis.
提出了基于有限元和模态分析的方法来研究大型空间结构热诱发振动
3)  vibration induced by wind
风诱发振动
4)  flow induced vibration
流动诱发振动
1.
For design condition, this paper established the theoretical model to study flow induced vibration, that is a single span cylinder contained flowing gas and surrounded by reverse direction flow, simply supported at each end; showed the mathematical equations and the simple method to solute it; and obtained the frequen.
根据10MW高温气冷堆热气导管处于内外两股方向相反气流同时作用的具体结构特点,针对实际设计工况,建立了其流动诱发振动的理论模型,即两端简支,受内外两股方向相反气流同时作用的单管振动模型;给出了相应的数学描述和简捷求解方法;通过计算获得了其振动频率随流速的变化关系,和不同流动工况下,失稳时的临界流速,及相应的稳定性图。
5)  flow induced vibration
流体诱发振动
1.
A theoretical and numerical model for three-dimensional flow induced vibration was proposed.
建立了三维流体诱发振动的理论及数值模型,采用任意拉格朗日-欧拉框架下的三维非定常Navier-Stokes方程组及波动方程组,分别描述了流体的流动及结构振动。
6)  flow-induced vibration
流体诱发振动
1.
The presented results show that(a) in the tandem arrangement,flow-induced vibration of the circular cylinder is greatly suppressed when th.
采用任意拉格朗日-欧拉(ALE)方法数值模拟圆柱在尾流中的流体诱发振动特性。
2.
In this paper, the state of the art of flow-induced vibration at home and abroad is described.
流体诱发振动是关系到核反应堆结构设计的安全性和可靠性的重要问题。
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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