您要查找的是不是:
- The flutter derivatives of the girder were identified by Weighting Ensemble Least-Square method (WELS). 分析表明:天兴州公铁两用大桥主梁断面具备气动稳定的必要条件;
- Environment excitation-based methods are effective ones to identify flutter derivatives of bridges in turbulent wind field. 基于环境激励的模态参数识别方法是解决紊流风场中桥梁结构气动导数识别问题的一种有效途径。
- The identification of flutter derivatives for bridge sectional model has long been a key issue in long-span bridge flutter and buffeting analysis. 桥梁断面颤振导数识别问题可转化为最小二乘优化问题,提出了梯度下降算法求解该优化问题,提取桥梁主梁断面18个颤振导数。
- Scanlan, R.H., and Tomko, J.J., (1971) “Airfoil and bridge deck flutter derivatives,” Journal of the Engineering Mechanics Division, ASCE, 97(EM6), 1717-1737. 姚忠达、杨永斌,(2000),高速铁路车-桥互制理论,图文技术服务有限公司。
- Three examples are used to examine the performance of TMDs, the first two are a simple-supported beam with different flutter derivatives and the third is a cable- stayed bridge. 本文中采用了简支梁例题一、例题二与斜张桥例题,当考虑振态耦合与无耦合两种情况时,在不同模型时设置TMD桥梁制振折减率的比较。在垂直向TMD制振效果并无明显差别;
- The aerodynamic parameters, which are static aerodynamic coefficients of the girder and of the train and the flutter derivatives of the girder of Tianxingzhou highway-railway bridge, were obtained. 分析上、下游不同方向来流,桥上有无列车,列车不同位置和不同队列数等对桁梁和列车三分力系数的影响。
- METHOD FOR IDENTIFICATION OF FLUTTER DERIVATIVES OF ABRIDGE SECTIONAL MODEL 桥梁颤振导数识别的一种方法
- Simulations for identification of flutter derivatives of bridge section using the coupled-forced-vibration method 桥梁颤振导数的耦合强迫振动仿真识别
- Mother is all of a flutter because of thunder and lightning. 由于电闪雷鸣,妈妈感到十分不安。
- Iterative Method for Identification of Flutter Derivatives of a Sectional Bridge Model 桥梁颤振气动导数识别的迭代法
- Identification of Flutter Derivatives of Sectional Model Based on Covariance Block Hankel Matrix Method 桥梁断面颤振导数识别的协方差块Hankel矩阵法
- The chemistry of petroleum and its derivatives. 石油化学石油及其复合物的化学
- Identification of flutter derivatives of bridge decks on the basis of stochastic search technique 桥梁断面颤振导数识别的随机搜索方法
- Forced vibration method for identifying flutter derivatives of bridges sectional model 桥梁主梁断面颤振导数的强迫振动识别法
- They unfurled the flag and let it flutter in the wind. 他们将旗展开让其迎风招展。
- That TV play caused a mild flutter among the viewers. 那出电视剧在观众中稍稍引起轰动。
- There was a flutter of wings among the trees. 树林里响起一阵飞鸟的拍翅声。
- Uniform Identification Theory of Bridge Flutter Derivatives under Smooth Flow and Turbulent Flow 桥梁颤振气动导数在均匀流与紊流作用下的统一辨识理论研究
- Testing study of determination of flutter derivatives by taut strip model in smooth flow 均匀流场拉条模型颤振导数识别试验研究
- Simulation for Identification of Flutter Derivatives for Aerofoil Using Forced Vibration Method and Its Application 机翼节段颤振导数的强迫振动仿真识别及其应用