• 对数周期振作为背射天线源。

    The log-period dipole array is applied as a feed element for a back-fire antenna.

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  • 给出一类强非线性对称周期一种解法。

    The influence of translational kinetic energy on the period of vibration is analyzed.

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  • 临界混沌状态周期噪声具有免疫力微弱正弦信号相位编码信号比较敏感

    The periodic oscillators at critical state are immune to noise and have sensitive dependence on weak sine signals or phase-coded signals at the same time.

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  • 分析了不同开度情况下非线性约束周期影响

    The effect of nonlinear binding force on period and amplitude are also analyzed.

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  • 质点体系原子耦合周期晶格

    Many Particle Systems: Atoms, Coupled Oscillators, Periodic Lattice.

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  • 结果表明罐内液体晃动周期运动,并且是多阶型的组合

    The result shows that the liquid sloshing appears as long period and combination of multi-modes.

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  • 本文基于外加周期信号作用首次对双杆摆机构混沌运动进行了有效的控制。

    In this paper, the chaotic motion of a double-pendulum is suppressed efficiently based on the method of periodic force.

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  • 为了在脉注射成型过程中提高制品质量缩短成型周期降低能耗提出混合集成智能多目标优化思想

    To improve part quality, shrink molding period and decrease energy consumption, the work provided a set of theory according to hybrid integrated intelligent optimal ideal.

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  • 抗震性能包括对结构阶自周期顶点位移最大间位移角、框架承担承担水平地震剪力、框架承担地震倾覆力矩比几个方面。

    The main seismic performance is introduced, including low level period, top displacement, maximum layer displacement Angle, frame bearing horizontal shear, frame bearing earthquake overthrow moment.

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  • 本文介绍了一种计算塔设备周期方法

    This paper presents a new method for calculating the natural vibration period of towers.

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  • 设计地震区的高层建筑时,选择结构适宜自周期十分重要的。

    It is important to select reasonable natural period of high-rise building in seismic design.

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  • 提出一种精确有效数值算法用以确定谐波激励下的分段线性子的周期运动

    This paper presents an efficient numerical scheme for calculating the periodic motion of a harmonically forced piecewise linear oscillator very accurately.

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  • 静力优化设计优化目标截面截面应力平方均值最小动力优化设计的优化目标是结构自周期平方和最小。

    The target of static optimization is to minimize the average of the squared sum of stresses while the target of dynamic optimization is to minimize the squared sum of natural vibration periods.

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  • 轴系对数衰减正比每个周期耗散的能量与峰值应能比值。

    This logarithmic decay ratio of the shaft set is in direct proportion to the ratio of the energy dissipated per cycle to the peak strain energy.

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  • 不仅冲击波作用情况有关而且通风构筑物形状大小、自周期等因素有关。

    It is a very complicated problem that is not only related to the shock wave interaction, but also to the shape, size and natural frequency of the ventilation structure.

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  • 利用周期法,对拉动弯曲问题中的混沌行为进行了有效控制。

    The chaotic behaviors in Eulers dynamically buckling system were controlled by means of the periodic force excitation.

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  • 我们文章里主要对阻尼碰撞周期研究

    In this paper, we study the periodic solutions of the impact oscillator with damping.

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  • 研究砖石古塔结构特性提出了古塔自周期计算公式。

    The paper studied the characteristic of structure of ancient brick and rock pagoda, proposed the formula of self vibration period for ancient pagoda.

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  • 研究了利用耦合反馈控制法周期法来控制拉动弯曲问题

    In this paper, the problem of controlling the Euler's dynamically buckling problems by means of the coupled feedback controlling and periodic force excitation were studied.

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  • 理论计算实测数据表明,所述方法可以用来确定大型框架周期

    The theoretical values and the measured data on the installed unit show that this method can be applied to determination of the natural vibration period for a large-scale framed tower.

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  • 最后以船舶机械非线性系统例,分别分析了该改进方法在系统呈现周期运动混沌运动时应用。

    Finally, the periodic and chaotic motions of a nonlinear vibration-isolation system for on-board machinery are investigated.

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  • 现行规范存在许多经验公式描述非抗震设计钢筋混凝土结构的自周期建筑高度关系

    Some empirical relationships for non-seismic design RC structures are now used in several design codes to relate the fundamental period to the height of a building.

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  • 通过计算一个运动周期内作用平板分析了理论平板的机理

    After evaluating the total work acting on the ITP by the airflow during an oscillating cycle, the flutter mechanism of the ITP was discussed.

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  • 本文研究了修改桥梁结构设计参数使其自周期型满足预先给定设计要求的动力特性修改过问题,提出了一种求解方法

    This paper presents a method for modifying the designing structural parameters of a bridge structure so that the bridge structure will freely vibrates at prescribed frequencies and modes.

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  • 动力特性测试结果表明随着节点转动刚度减小框架周期延长

    Dynamic characteristics tests show that the natural vibration period of steel frame can be prolonged with the reducing of connection rotation stiffness.

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  • 且各级衍射随着方向改变而发生周期变化

    At the same time, degrees of polarization (DOP) of every diffraction order periodically alter with change of polarization orientation.

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  • 提出了在弹簧子作简谐,利用集成开关霍尔传感器测量周期进一步测量物体惯性质量方法

    The method to measure body's inertial mass is proposed by measuring period of vibration with the integrated hall switch sensor, when spring oscillator is in situation of simple harmonic vibration.

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  • 因此本文提出通过检测混沌子阵列间歇混沌周期检测微弱信号的新方法。

    Therefore, the detected signal can be gained by detecting the intermittent chaotic periodicity of chaotic oscillator.

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  • 通过对方程组的求解,得到这种类型设备周期

    By solving equation group, the basic nature vibration period and vibration modes of this type equipment are obtained.

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  • 通过对方程组的求解,得到这种类型设备周期

    By solving equation group, the basic nature vibration period and vibration modes of this type equipment are obtained.

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