考虑单模态振形，得到了相应于最低阶特征频率的幅频关系和受谐和激励的幅频响应。
The amplitude-frequency relation with respect to the natural frequency of the lowest order and amplitude-frequency response under harv monic force were obtained by considering single mode vibration.
针对工程实践中常见的桥梁问题，建立了其在自由振动下的模型，分析了其前几阶振动模态下的振形和动态应变分布。
Aimed at popular bridge in the engineering, we build a piezoelectric bridge vibration model and analyze the vibration shape and distribution of the dynamic strain.
本文运用三维有限元方法离散水体，研究了箱形术体的自振频率及动水压力振型。
In this paper, the natural frequencies and modes of box water body researched by using three-dimensional finite element method.
应用脉动法测到的信号分析结构的固有频率和振型，利用作者提出的改进的单纯形法来识别结构刚度。
The frequencies and vibration modes of structures are analyzed with pulsating method and structural stiffness is identified with modified simplex method, which is presented by authors.
对一种柱面电磁带隙结构应用于圆柱共形偶极子振基站天线进行了研究。
In this paper, a kind of cylindrical EBG structures applied to base station cylindrical conformal dipole array antennas is studied.
三角形钢管塔架是小型塔架的优选结构型式，但存在易产生风载扭振的缺点。
Triangular steel pipe tower is fine type of small scale tower structure. Yet it tends to cause a torsional vibration by wind.
静态计算结果表明，直齿锥齿轮齿廓长修形具有较好的减振效果。
The result of static calculation showed that the tooth profile long modification of spur bevel gear possesses better effects of vibration reduction.
以三角形振子天线为基础对天线结构进行改进，提出了一种新型三角形组合振子天线。
A novel triangle combined monopole antenna was proposed based on the improvement of triangle monopole antenna.
研究发现：扁平箱形断面桥梁的颤振临界风速与风偏角的关系明显地受到风攻角的影响。
The studying of the different sections deck shows: the variation pattern of flutter critical wind speed of bridge with flat box deck and wind yaw Angle is significantly affected by wind attack Angle.
本文利用直接时域法计算了由三单元V形振子组成的直线阵的时域辐射特性，得到了一些有用的结果，为时域天线的进一步研究提供参考。
The time-domain radiation characteristic of a three V-dipole array has been studied by direct time-domain method. Some valuable results are obtained.
散体颗粒受振运动是一种不规则、复杂和随机的运动，具有分形特征，对其进行了分形分析和模拟。
The motions of granules by vibration are irregular, complicated and stochastic, so it has fractal characteristics, which is analyzed and simulated.
散体颗粒受振运动是一种不规则、复杂和随机的运动，具有分形特征，对其进行了分形分析和模拟。
The motions of granules by vibration are irregular, complicated and stochastic, so it has fractal characteristics, which is analyzed and simulated.
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