1) vortex vibration
涡振
1.
5 three most adverse conditions in practical work situations,this paper gives the results that the vortex vibration and flutter have n t occurred in the static wind force factors,presents the changes of amplitude buffeting with the wind speed change.
5移动模架造桥机在实际工作中3种最不利状态进行的风洞试验研究,得出其在均匀流场中的涡振、颤振均未发生,给出其抖振振幅随风速改变的变化规律。
2.
In this paper,the wind resistant stability of the bridge is checked from aspect of the static wind stability,fluttering stability,vortex-excited resonance and stay cable rain excitation through a series of the modern testing methods of the sectional model test,large-scale vortex vibration test,aeroelastic model test and stay cable artificial rain test in wind tunnel.
通过节段模型试验、大尺度涡振试验、气弹模型试验和拉索人工降雨试验等各种现代风洞试验方法,从静风稳定性、颤振稳定性、涡激共振性能和拉索风雨激振性能等方面检验主通航孔桥斜拉桥结构的抗风稳定性能。
2) VIV
涡激振动
1.
SIMPLIFIED VIV COUPLING MODEL FOR SUBMARINE PIPE SPAN WITH SPOILER;
阻流板管跨结构涡激振动耦合简化模型
2.
Study on Coupling Simulation and Suppression Method of Deepwater Riser VIV;
深水立管涡激振动的耦合模拟及抑制方法研究
3.
Numerical simulation of VIV for an elastic cylinder mounted on the spring supports with low mass-ratio
弹性支撑低质量比圆柱涡激振动数值模拟(英文)
3) vortex induced vibration
涡激振动
1.
Fatigue reliability analysis of Vortex Induced Vibration of TLP tethers in waves and current;
张力腿系缆系统涡激振动疲劳可靠性分析
2.
The software Shear 7 is adopted to analyze the vortex induced vibration (VIV) performances of the risers with no buoyancy module,staggered buoyancy modules and fully arranged buoyancy modules respectively,and also a.
采用ABAQUS软件对带浮力块的深水钻井隔水管的静态性能进行了分析,定量分析了浮力块直径和长度对隔水管的弯曲应力、横向变形、底部柔性接头转角和等效应力的影响;采用Shear7软件对裸隔水管、浮力块交错分布隔水管和全浮力块隔水管的涡激振动性能进行了分析,定量分析了不同浮力块分布方案下隔水管的固有频率、均方根位移、均方根应力响应以及疲劳损伤。
3.
Due to the introduction of second-order square damp term in wave force, the nonlinear vortex induced vibration equations of pipeline span are set up.
海底管跨的涡激振动是引发管跨共振失效的主要因素。
4) vortex-induced vibration
涡激振动
1.
Study on dynamic characteristics and vortex-induced vibration of marine risers considering temperature stress;
考虑温度应力的海洋输液立管动力特性及涡激振动研究
2.
Two-dimensional FEM model of vortex-induced vibration of a circular cylinder;
近底管线绕流及涡激振动的二维有限元数值模拟
3.
Experimental study on vortex-induced vibrations of a pipeline near a plane boundary in steady flow;
单向水流作用下近壁管道横向涡激振动实验研究
5) vortex-induced resonance
涡激共振
1.
The Bridge tower calculation model is established with reasonable simplification; vibration equation is also established with the model;and the steady response of vortex-induced resonance of the cylindrical-typed bridge tower is obtained with mode superposition principle.
通过合理简化建立桥塔计算模型及其涡激振动方程,利用振型叠加原理求解振动微分方程,确定桥塔风致涡激共振时的稳态振动响应;由风致涡激振动理论及有关空气动力学原理确定漩涡发放频率以及升力幅值;考虑桥塔的形状结构特点以及发生共振时的频率锁定现象确定锁定区域,理论分析和数值计算结果表明:幅频响应曲线的共振峰所占频域极窄,在百年一遇的风载荷作用下桥塔在发生风致涡激共振的情况下其响应幅值不大,结构处于安全的状态。
2.
In order to study the vortex-induced resonance characteristics of the cylindrical-typed bridge towers of large cable-stayed bridge and effectively control the occurrence of the vortex-induced resonance,calculation model was established based on analysis of the boundary conditions of the bridge towers and the inherent characteristics of the bridge towers was analyzed.
为了研究大形斜拉桥圆柱形桥塔的涡激共振特性,并且对其进行有效的控制,通过分析大形斜拉桥圆柱型桥塔的边界条件特点,建立桥塔计算模型,基于此模型分析了桥塔的固有特性;由风致涡激振动理论及有关空气动力学原理确定漩涡发放频率以及升力幅值;考虑桥塔的形状结构特点以及发生共振时的频率锁定现象确定锁定区域;提出了5个控制桥塔涡激共振的方案,理论分析和数值计算结果表明:方案5——改变锁定区域结构形式,不仅能够使桥塔避免或减弱涡激共振,与其他4个方案相比,该方案在造价和施工方面具有明显的优势,同时增加附属结构不会影响桥梁其他的相关结构,因此确定方案5——改变锁定区域结构形式为最佳控制方案。
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。
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。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条