阻尼器

In order to analyze the influence of filled metal particles on impact force for hydraulic pile hammer, analytical solution of mathematic model for pile hammer filled with metal particles considering effects of metal particles was presented. In the solution, lumped mass were used as metal particles, a spring was used as contact stiffness between metal particles and hammer body, different variable lumped masses were used as pile hammer, the ram and anvil, a spring and a dashpot were used as the anvil cushion and pile respectively.

为分析填充金属颗粒对打桩锤锤击力的影响，考虑填充金属颗粒的作用，用集中质量块表示填充的金属颗粒，用弹簧模拟金属颗粒与锤体相碰处的接触刚度，用不同的集中质量块表示桩锤、砧座和桩帽，用并联的弹簧、阻尼器表示锤垫，用弹簧表示桩垫，用阻尼器表示桩，建立了平衡方程。

The principle and design method of vibration energy dissipation and structural control are introduced.

介绍了结构控制和消能减振技术的减振机理和减振设计方法，对不同结构构造的粘滞流体阻尼器的耗能原理进行了研究，研制出了一种性能稳定的双出杆型工程结构减振粘滞流体阻尼器。

In order to make full use of the economical and practic al properties of storage water equipment inside structure and show div erse designs for tuned-type damper systems,a new tuned-type damper-tune d hybrid-tanks/mass damperwas presented.

为充分利用结构物内部储水装置的经济性及实用性，调谐类阻尼器有更多样的设计。提出了调谐混合水箱/质量阻尼器的概念。

Based on the current development of VED in structural control and its fractional derivative model, the finite element formula of VED is erected by using three different assumptions of the shear strain.

针对粘弹性材料的分数导数模型，采用不同的剪应变的假设，推导了粘弹性阻尼器的有限元计算公式，通过粘弹性阻尼器在一单自由度系统的控制上的应用，确定了其计算模型。

Based on a sinusoidal input, force and displacement expressions of a damper are formulated by using the fractional derivative Maxwell model. The mechanical property of the damper is analyzed using these expressions.

在正弦输入的假设下，推导了用分数微分Maxwell模型建模粘弹性阻尼器时力和位移的表达式，并用该表达式分析了阻尼器的力学特性。

The results show that the dynamic behavior of the novel damper is easily controlled by adjusting the magnetic flux density in the radial clearance.

结果表明，通过调整阻尼器间隙中的磁场强度就能够对阻尼器的动力特性进行控制。

The results show that the rolling type lead shear damper realizes the preconcerted aim of better energy dissipation capability on the condition of small displacement.

在充分分析已有阻尼器相关技术性能及适用范围的基础上，发明了耗能效率高、性能稳定、耐久性好、占用空间小、有放大位移及转角功能的新型转动式铅剪切阻尼器。

For the use in vibration control of cable-stayed bridges, a SMA damper with outstanding properties is proposed and its model of restoring force is built through model tests.

针对斜拉桥的振动控制，研制了一种性能卓越的SMA阻尼器，通过模型试验建立了该SMA阻尼器的恢复力模型。

According to structural characteristics of floating slab tracks, a track segment element was taken between two adjacent fasteners. For each element, rails were regarded as Euler beams supported by discrete viscoelastic supports. The fasteners and rubber supports were replaced by a linear spring and damp. So the vibration model of the floating slab track was established. In constructing vibration model of a metro train, each car of the metro train with two suspensions was modeled as a multi-rigid body system, in which rigid bodies were connected with each other by a linear spring and damp. Combining the potential energy of vertical vibration of the track with that of the metro train, the total potential energy of vertical vibration of the train and track was obtained. And then, the matrix equation of vertical vibration of the system was established using the principle of total potential energy with stationary value in elastic system dynamics and the "set-in-right-position" rule for formulating system matrices. The vibration responses of the system can be obtained by solving the matrix equation with the direct time integration such as Wilson-θ method.

摘 要：针对浮置板式轨道结构特点，取相邻2个扣件之间的轨道为1个轨段单元，钢轨视为连续弹性点支承Euler梁，浮置板视为弹性薄板，扣件系统及橡胶支座均模拟为线性弹簧及粘滞阻尼器，建立浮置板式轨道振动模型；将城轨列车中的车辆均离散为多刚体系统，各刚体之间通过线性弹簧及粘滞阻尼器相连，建立列车振动模型；将浮置板式轨道及列车振动势能叠加，得到系统竖向振动总势能；基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立此系统竖向振动矩阵方程；采用Wilson-θ逐步积分法求解此矩阵方程，得出此系统竖向振动响应。

By using of finite element analysis software ANSYS and taking the power transmission line crossing over the Pearl River as the background of research, under the condition that the viscous-damper energy dissipater and Tuned Mass Damper are arranged or not on the transmission tower, the displacement and the acceleration of the tower are compared and analyzed under the three-dimensional earthquake waves.

利用有限元分析软件ANSYS，以跨越珠江的输电线路工程为研究背景，在输电塔上布置粘滞消能阻尼器和调谐质量阻尼器(tuned mass damper，TMD)，对比分析了在三向El-Centro地震波作用下有、无减震控制措施的输电塔位移和加速度地震响应。

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。