阻尼的

If the number of the second kind of damping element is comparatively less than the number of the whole structure element, its calculating efficiency will be higher.

据此，对这类结构作者编制了空间动力时程线弹性分析程序，验证分析程序的可靠性之后，对这类结构在地震波的作用下，按实际阻尼比、等效阻尼比、单一阻尼比等情况进行了三维弹性动力时程计算，分析在不同情况下的反应差别，比较三者的差异发现后两者计算结果用于设计或者造成浪费或者造成不安全，最后提出在设计中应该注意的问题及建议。

In order to optimize performances of shunt active power filter of harmonic compensation, attenuation ratio for switching ripple, stability and power losses, an improved LCL filter topology was presented based on the analysis of the frequency characteristics of the LCL filter, in which a switching-ripple shunt branch and a series-inductor were adopted to the damping resistor to reduce the power losses dramatically.

为了使并联有源滤波器谐波电流补偿性能、开关纹波衰减率、系统稳定性和功率损耗等方面性能得到系统的折中和优化，提出了一种改进型LCL滤波器拓扑，该结构充分利用了LCL滤波器的频率特性，在阻尼电阻两端引入开关纹波谐振分流支路，同时在阻尼电阻上串联一小电感，有效的减少了阻尼电阻的损耗而不改变系统的静态和动态性能。

A modified Sigmoid model, which has simple expression, clear meaning, and less parameters, is proposed.

提出了MR阻尼器的修正的sigmoid模型，该模型表达式简单、含义明确、参数较少，其参数可以根据阻尼器试验曲线做灵活的修改，能够准确描述MR阻尼器的动力特性。

The coming forth of virtual prototyping technology presents a new approach to study gun stability, and based on establishment of dynamic model of selections of structure parameters, the effects of stiffness and damper of elevating mechanism, stiffness and damper of trail, stiffness and damper of soil, parity of recoil mass and parity of trunnion position on firing stability are first studied with virtual prototype of gun in this paper. An improved equation of sensitivity analysis is provided, and the important degrees of factors with different dimensions can be compared.

虚拟样机技术的出现为火炮射击稳定性研究提供了新的方法，文中在建立火炮动力学模型的基础上，通过选取火炮结构参数对火炮射击稳定性进行研究，利用虚拟样机分析高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐品质偏心和耳轴位置偏心对火炮射击稳定性的影响。

A new type of shape memory alloy damper was proposed by utilizing both the high damping and recentring features of superelastic SMA wire.

利用奥氏体SMA丝的超弹性和阻尼特性，设计了一种新型的SMA阻尼器，试验研究了该阻尼器在循环荷载作用下的力学性能，建立了基于塑性理论的一维理论模型，并对其力学性能进行了数值模拟。

A model of self-controlled synchronous motor (including double armature winding synchronous motor) is developed which takes account of damper winding according to its actual structure. The damper winding is represented by two sets of loop on each axis based on multi-loop method and bar currents may be calculated.

本文首先建立了包括参数计算在内的自控式同步电动机（包括双电枢绕组自控式同步电动机）的数学模型，该模型采用多回路法处理阻尼绕组，便于计算阻尼条的电流，可以比较准确地分析阻尼绕组对电机运行性能的影响。

In chapter 5, a kind of viscoelastic damping material is compounded which meets requirements of the structure and the function of high damping machine tool spindles.

第五章介绍了一种根据高阻尼机床主轴的结构和性能要求配制的高分子粘弹性阻尼材料，并对材料的阻尼特性与预载荷的关系进行了试验研究。

In this paper,using mild steel plate have stable hysteresis under loading and unloading repeated cycles,designed a U shape mild steel plate damper,an hysteresis loop and analytical model was carried out by experimental test At last,this damper is .

振动控制是结构抗震防灾的一种积极有效手段，目前对于大跨空间结构的振动控制技术不是很成熟，利用软钢板在反复循环荷载作用下具有稳定的滞回特性，设计了U形软钢板阻尼器，通过试验得出该阻尼器的滞回曲线，建立了该阻尼器分析模型。

Secondly,some influence factors of damping adjustable multiple are analyzed to provide some ways for augmenting the damping adjustable multiple under the condition of keeping initial damping moment invariable.

Secondly ，一些影响因素的多重阻尼可调的分析提供一些途径增加阻尼可调多的条件下，维持最初的阻尼时刻invariable。

According to partial frequency and relative damping ratio,a new design method for calculating the rigidity parameters of the torsion bar and damping parameters of the shock absorber is presented.

在机构运动分析的基础上，导出了精确分析悬架受力、刚度和阻尼特性的基本公式，给出了按选定的偏频和相对阻尼比确定扭杆刚度和减震器阻尼参数的设计步骤。

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。