| 1. | By comparing two kinds of calculating model and studying the difference of the support stiffness to the influence of the shape finding and the analysis of the external loading of membrane structure
本文还对薄膜结构的两种计算模型(分离模型和整体模型)进行了比较，研究了支座刚度的变化对薄膜结构的找形和载荷分析的影响。 |
| 2. | The investigate characteristic of system vibration and effects of contact ratio , gear number on dynamic mesh force were discussed . rotational modes are independent of the transverse support stiffnesses of the carrier , ring gear , and sun gear
在此基础上分析了不同速度(频率)对系统振动的影响，并研究了重合度、齿数与系统动态啮合力之间的关系。 |
| 3. | Each parameter affecting to its natural frequency and vibration characteristic is analyzed ( such as the supporting stiffness coefficient , the supporting distance , the internal pressure and the velocity of fluid in the pipeline )
分析了各参数(支承刚度系数、支承跨距、管内压力、管内流体速度)对振动特性的影响；对速度波动、压力波动对固有频率的影响作了探讨。 |
| 4. | As we know , support at the both straight edge of acmr is a elastic support between the hinged support and fixed support , and its stiffness is variational . so the relation between support stiffness and load - carrying capability of acmr is worth to be studied
众所周知，实际工程中波纹拱两端的直边支座处于铰支和固支之间，属一弹性支座，其弹性刚度是变化的，支座刚度与波纹拱结构受力性能及稳定承载力之间的关系是一个非常值得研究的课题。 |
| 5. | In the dissertation , with building the analysis model of rollin g bearing , the supporting stiffness matrix is added into the whole stiffness matrix of shaft and the dynamics characteristic of shaft rotor and working parameters of each bearing is calculated with finite element theory
建立了滚动轴承的拟静力学分析模型，应用有限元法，将轴承的支承刚度带入整个轴系的刚度矩阵进行分析，计算出包括临界转速在内的轴系转子动力学性能和各个轴承的工作参数。 |
| 6. | The new concepts , such as the active supporting coefficient , the coefficient of strength utilization , the coefficient of pretensioned bolt length , the effective compressive zone , the coefficient of pretensioned stress diffusion , the framework and mesh structure of the effective compressive zone , and the critical supporting stiffness were put forward
提出锚杆主动支护系数、强度利用系数、预应力长度系数、有效压应力区、预应力扩散系数、有效压应力区骨架网状结构及临界支护刚度等概念。 |
| 7. | As to the high speed of electric spindle system , the angle - contact bearings are usually applied to supporting the shafts . because the supporting stiffness of rolling bearing is non - linear , especially under the circumstances of high speed and ultrahigh speed , the internal working status is so complicated that it is not regarded as routine linear support and ordinary non - linear support . centrifugal effect of the rolling bearing increase the factors of influencing the supporting stiffness
高速电主轴系统的转速很高，通常都采用角接触球轴承作为支承，由于滚动轴承的支承刚度呈非线性形式，特别在高速和超高速情况下，滚动轴承内部的动力学状态十分复杂，由于滚动体运动所产生的离心力作用，使得影响其支承刚度的因素增多，不能作为常规的线性支承和普通的非线性支承处理。 |
| 8. | Translation modes are similarly independent of the rotational support stiffnesses . large contact ratio do not mean lower mesh force . if either the number of sun or ring gear is not multiple of planet gear , system will run effectively , with lower impaction of tooth mesh in and out
研究表明：扭转支撑刚度的变化影响系统的转动模态，径向支撑刚度(行星架的除外)的变化影响系统的位移模态；齿轮间重合度大并不等于轮齿间的受力情况好；行星轮与内齿圈齿数不为行星轮个数的整数被时，轮齿的啮入、啮出对系统的冲击小，系统的效率高。 |
