分析试验

Based on a bounding surface model of the concrete and elastic-plasticity constitutive relationship of steel, this paper establishes the finite element model of the self-stressing concrete filled steel tube short column under axial load and eccentric load. the mechanical performances are analyzed.

对本课题组共进行的37根轴压短柱的试验结果分析，采用分解分析的方法，回归出钢管自应力免振混凝土轴压结构核心混凝土的等效单轴本构关系，与传统的弹性、塑性、断裂、损伤等力学模型相比具有简单实用的特点，便于进行工程计算。

Based on the plasto-elastic bounding surface model, the dynamic characters of typical clay and silt were studied through several types of laboratory dynamic tests. The parameters of dynamic bounding surface model were given upon the tests. By using a nonlinear procedure for response analysis of horizontally layered sites subjected to multi-directional earthquake loading, the response of acceleration, pore pressure and dynamic stress in Shanghai area under different earthquakes were studied.

在弹塑性边界面模型的基础上，通过试验，研究了上海地区典型粘土和砂性土的动力特性，取得了针对边界面模型的计算参数，并采用多向地震作用下的水平地层弹塑性动力反应分析程序对以深厚软土覆盖地层为特点的上海地区典型的土层断面，以苏南核电站为主的地震输入进行了场地反应分析，在加速度特性、孔压特性和动应力特性等方面取得了相应的结果。

In order to quantitatively analyze the aseismatic performance of this kind of beam-column assemblies through whole loading history, the non-linear FE analyses of the cross beam-column specimens were carried out by ANSYS. Compared to the experimental results, the finite element analyses cast a further light upon the characteristics of this beam-column assembly while being subject to cyclic reverse loading.

为了能对这种细晶钢筋增强混凝土结构的抗震性能有较为准确的定量分析，采用ANSYS有限元软件对十字形梁柱组合件进行了受力全过程的非线性有限元分析，并将分析结果与试验结果进行对比，从而进一步了解细晶高强钢筋混凝土梁柱组合件在反复荷载下的受力性能特点。

First, we compute the characteristic polynomial of the system. Secondly, we can use the stability criterion to decide the region of parameter to enable the system stable. Finally, we can search the

最后对两种控制器设计方法进行了Matlab仿真试验，证明了它们的有效性和理论分析的正确性，找出了参数变化对系统性能影响的规律，并且通过仿真分析比较了各自的特点和使用范围。

The researchers analyzed chondroitin studies dating to 1970. The 20 clinical trials they studied included 3,846 patients.

研究人员对1970年以来有关软骨素的研究进行了分析，所分析的20项临床试验中共计3846名患者。

Later, it makes some comparison with four kinds of modulation technique, and finally, it implements the three-level PWM switching power amplifier with the PWM technique. The power of the amplifier is 2kVA, and the frequency bandwidth is 10～3kHz. In the thesis, the author designs and makes the hardwares of the switching power amplifier. The hardwares contain power inverter rank circuit, control system circuit based on DSP, drive and isolation circuit, and protective circuit. The thesis also analyses the potential safety problems and put forward some solutions for the problems. Furthermore, the thesis accomplishes the software design of the control system, and successfully debugs it. The methods of designing higher power ampilfier are also discussed in the thesis. It analyses the feasibility of the methods, outlines the way of how to design higher power switching power amplifier, and does some experiments with the method of switches-parallelling.

根据电动振动试验系统对开关功放的要求，提出了以电感电流瞬时值控制技术为基础的三电平脉宽调制开关功放的设计方案，并通过系统仿真进行了原理性论证；然后设计并制作了开关功放的硬件，包括功率转换电路，基于DSP的控制电路，驱动、隔离电路以及保护电路；针对开关功放数学模型不易得出的特点，细致分析了模糊自适应PID控制方法，在此基础上编写了控制程序；研制出一台功率为2kVA，通频带为10～3kHz的三电平脉宽调制开关功放；论文中还探讨了实现大功率开关功放的方法，分析了各种方法的可行性，给出了实现大功率开关功放的思路，并进行了并联开关管实现大功率开关功放的实验。

The initial model of the clasper binding machine was established based on conception design,and its optimization was made.The dynamics character of the clasper binding machine was analyzed base on the ADAMS,the virtual design was performed based on the SOLIDWORKS,and the stress and deformation under load was analyzed based on ANSYS.The result of the simulated analysis of virtual prototyping was verified by the experiment.

它是计算仿真技术与产品设计有机的结合，通过CAD/CAM/CAE等技术把产品的信息集成到一个可视的环境中，以实现在产品制造前就可以对整个产品进行完整的分析与方案的优化，观察并试验各组成部件的相互运动过程、受力分析、装配关系、性能特性等，使用系统仿真软件在各种虚拟环境中真实地模拟系统的运动，以便修改设计缺陷，不断改进设计方案，直至获得最优设计方案，再制造物理样机。

In this paper, the physical and mechanical properties of FRW fire-retardant medium density fiberboard by the cloy process with FRW fire retardant were researched.

通过正交试验，对其各项性能进行了测试和分析，以确定最佳制板工艺条件，同时讨论和分析了FRW 阻燃剂对FRW阻燃中密度纤维板的物理力学和阻燃性能的影响。

The dynamic properties of the tower of Runyang Yangtze River Nancha Suspension Bridge were studied before and after installing coble by finite element method and the modal experiment analysis based on environmental stimulation.

通过有限元分析和基于环境激励的模态试验分析，研究了润扬长江公路大桥南汉悬索桥挂缆前后桥塔的动态特性。

And these 6 influential factors were analyzed with the experiment by means of range, variance and regression analysis. During the analysis, the evaluation criteria were the acceleration of rolling rock movement and the restitution coefficient of collision velocity between rolling rock and slope surface.

在试验基础上，采用极差、方差和回归分析等手段，以滚石运动的加速度和滚石与坡面碰撞速度恢复系数作为评价指标，对影响滚石在斜坡上运动特征的6个因素进行分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。