| 1. | The equivalent stiffness of the shaft is deduced by fem while only considering transverse vibrations of the rotors
研究了轴系不平衡量、联轴节刚度及轴承标高变化对轴系失稳特性的影响。 |
| 2. | That is , after crack , to simulate the crack - behavior of concrete , the previous stiffness matrix is substituted for by equivalent stiffness matrix
接下来，通过在同等超载条件下与结构模型试验的观测结果的比较，证实了理论模型的可靠性。 |
| 3. | Taking the ceramic ball bearing used in micro turbine engines as an example , an experiment method for measuring the equivalent stiffness and the damping of the ball bearings is introduced
以某微型发动机采用的陶瓷滚动轴承为例,测量了它的等效刚度和阻尼。 |
| 4. | It is found that when the ratio of frequency is less than 1 , the equivalent stiffness will be increased with the rising of the rotational speed in the certain conditions
研究表明:在一定安装、润滑和预紧条件下,当频率比< 1时,轴承等效刚度随着转速的升高而升高。 |
| 5. | The synthetical stiffness of ball bearings is obtained by combination the contact stiffness with the oil film stiffness . the concept and the calculation menthod of the equivalent stiffness are presented in this paper
将油膜刚度和接触刚度组合,推导了滚动轴承的综合刚度,提出了滚动轴承等效刚度的概念和计算方法。 |
| 6. | The existing methods of structure design of concrete pavement with lean concrete base are analyzed , proving that the equivalent stiffness method is proper for calculating load stress but not for thermal stress
对贫混凝土基层混凝土路面现有结构设计方法的应力计算进行了分析，发现等刚度法用于双层板路面的荷载应力计算是可行的，但用于温度应力计算会引起较大的误差。 |
| 7. | This dissertation also presents the equivalent stiffness and damping models and the nonlinear hysteresis and saturation model of a kind of the mr damper developed by the experimental testing and modeling in order to describe accurately characteristics of the mr damper
建立了磁流变阻尼器的等效刚度和等效粘性阻尼系数与施加电压、激振频率和振幅的关系以及能精确表示磁流变阻尼器的力学特性的非线性滞回模型。 |
| 8. | According to the characteristics of the series - base - isolation structure , the calculation formulas for the equivalent damp and equivalent stiffness of the structure were given , and the desirable equivalent damp could be obtained by rational design of multi - level yield shear stress of composite bearings
根据串联基础隔震结构的特点，给出了该种隔震体系的等效阻尼、等效刚度的计算公式；将串联隔震支座设定为多个屈服剪力水平，得到了较好的等效阻尼。 |
| 9. | Some aseismic design concepts of tube structure with transfer storey , including the level of transfer storey , the change rate of equivalent stiffness , the change rate of lateral stiffness , are presented . transfer brackets are used in shenzhen fujian xingye bank for extention and setback along the height of the building
文中给出了带转换层简体结构抗震设计的几个概念，包括：限制转换层设置高度，控制转换层上、下层结构的等效刚度比，控制转换层与其上一层侧向刚度比等。 |
| 10. | Through the data obtained from the experiments , hollow shear - walls " equivalent stiffness degeneration and remove stiffness degeneration formulas are advanced . at the same time , formulas to calculate character stiffness and method to confirm restoring force model also be proposed . these are important references to the whole process analysis of r . c
在试验得到的数据和以前所做试验的基础上，对空心剪力墙的等效刚度、卸载刚度的退化进行分析，得到刚度退化公式，同时也确定了特征点刚度的计算公式和恢复力模型的确定方法，对空心剪力墙结构进行全过程分析具有重要的参考价值。 |
