查询词典 subharmonic

The problem gives a practicable methods to solve the existence and multiplicity of periodic and subharmonic solutions of second order forward and backward functional difference equations.

论文研究的问题和所得的结论具有比较重要的理论价值和应用价值。论文思路清晰，逻辑性强，推理严密，结论具有创新性。

Thirdly, a new type base isolation system, i. e., slide-limited friction base isolation system is presented in this paper. Based on this system, harmonic and subharmonic periodic response of S-LF subjected to harmonic motion is investigated by using Floquet theory. Dynamic response of sliding structure subjected to earthquake ground motion is calculated with a precise high order direct integration method, and the numerical results are presented in terms of maximum acceleration response spectra of supcrstructure and maximum sliding displacement response spectrum. By comparison with isolating effects of pure-friction base isolation system and resilient-friction base isolation system , it shows that the isolating characteristic of S-LF is superior to P-F and R-FBI. Through analyzing an engineering example, it is observed that the maximum inter-storey shear force and absolute acceleration of sliding structure to earthquake ground motion are very different from those of traditional structures.

提出了一种新型基础隔震模型，即带限位装置的摩擦隔震体系；基于此隔震模型，利用Floquet理论研究地面谐运动下S-LF结构的运动特性；并利用高精度的精细时程积分法，通过对地震作用下S-LF动力响应的计算，绘制了上部结构最大加速度反应谱和基底最大滑移量反应谱，并研究了各种结构参数对隔震的影响；通过与恢复力摩擦隔震系统和纯摩擦力滑移隔震系统的比较表明，S-LF的隔震性能优于P-F和R-FBI；对计算实例的分析发现，地震作用下S-LF结构的层间最大剪力和最大绝对加速度反应分布较一般传统结构有很大区别。

By applying the method of multiple scales to the reduced system,the first approximation solution for 1/3 subharmonic resonance of the system is obtained.

应用非线性振动的多尺度法求得系统满足1/3次亚谐共振情况时的一次近似解，并进行数值计算。

By applying the method of multiple scales to the reduced system,the first approximation solution for 1/3 subharmonic resonanc...

应用非线性振动的多尺度法求得系统满足1/3次亚谐共振情况时的一次近似解，并进行数值计算。

Based on this system, harmonic and subharmonic periodic response of S-LF subjected to harmonic motion is investigated by using Floquet theory.

并给出了这种结构的最大滑动位移响应随滑移面摩擦系数的变化曲线，可供设计时参考。

Harmonic function generalizes the harmonic function, the following respects are discussed: the least energy, Liouville theorem with respect to harmonic function and the relation of harmonic function and subharmonic function.

如对次调和函数的平均值不等式的推导[3- 4 ] ，调和函数的存在性的证明等[5] 。2 0 0 0年，PeterLi提出了另外一种函数，即调和函数，这一类函数比调和函数的应用广泛得多，同时又具有和调和函数类似的性质。

By combining with Poincare mapping and phase plane plot, the simple harmonic, non-harmonic monocycle, subharmonic, quasi-periodic and chaotic response arised in the system under different backlas...

通过分析各齿轮副的动载荷系数变化规律，讨论了各齿轮副啮合状态在非冲击、单边冲击以及双边冲击状态之间的转化过程和齿侧间隙的关系。

In the study of the nonlinear dynamics, Melnikov function is widely used as a criterion to check whether subharmonic or ultra-subharmonic bifurcation even chaos will occur in a perturbed Hamilton system.

在非线性动力系统的研究中， Melnikov函数被广泛地用来作为微扰哈密顿系统是否发生次谐或超次谐分岔乃至混沌的判据。

First we give the definition of semicontinuous and subharmonic functions and the propertities of the semicontinuous and subharmonic functions and then introduce the notion of plurisubharmonic functions and the propertities of psh functions, then we give the definition of closed positive currents and the relation between psh functi.

首先总结了半连续函数和次调和函数的定义及其性质，然后在此基础上介绍了多次调和函数的定义及其性质，引入了正闭流的定义，说明了正闭流与多次调和函数之间的联系。

What's more, this solution technique is available to obtain the potential subharmonic resonance and it overcame difficulties of traditional analytic Harmonic Balance Method based on the describing functions in resolving superharmonic and subharmonic response.

克服了传统的解析谐波平衡法基于描述函数进行而难以求解一般周期响应和次谐波响应的缺点。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。