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纵的分析

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In this paper the dynamics characteristics are analyzed theoretically at first. According to the unique configuration and mechanics characteristics, the mechanics model and kinetic differential equation of the half-tracked air-cushion vehicle are established. Algorithm of mechanics and lifting-state parameters are put forward and analyzed. And variation ranges of the driving state parameters are obtained and the corresponding influence factors are analyzed. The further qualitative studies on control model are carried out.

因此,本文首先从理论上分析了半履带式气垫车的动力学特性,根据半履带式气垫车的独特结构和力学特性,建立了半履带式气垫车的力学模型和相应的运动微分方程,提出并分析了在纵摇与升沉运动时,半履带式气垫车的力学参数和垫升状态参数的计算方法,得到了在行驶过程中各运行状态参数的变化规律,并分析了相应的影响因素,进而对控制对象模型进行了定性研究。

The improved electrode can produce stronger axil magnetic field and the axial magnetic flux density at contact edge was similar to maximum value.

对铁芯式两极纵磁真空灭弧室触头间隙的纵向磁场和铁芯中涡流进行了数值分析,根据分析结果,对触头结构进行了改进。

At last, with the elevated pile foundation model of a floating type cable-stayed bridge, pushover analysis with common patterns and new pattern on longitudinal direction is made, then compared with nonlinear time history analysis. The result shows the new pattern works well.

以一飘浮体系斜拉桥的高桩承台模型为例,进行常见模式以及新模式下纵桥向的推倒分析,并将推倒分析曲线与非线性时程分析的结果进行了比较,发现新模式的结果与时程分析的结果吻合得较好。

Then the relevant basic knowledge is introduced, which includes the classification of camera shutters, the meaning of some parameters, the design principles and work features of focal-plane shutter.

紧接着研究分析了照相机快门的分类和一些参数的含义以及焦平面快门设计原理和工作特性,具体分析了电磁控制式纵走单幕焦平面快门整体设计要求,并对整体和各功能组成部分进行了设计。

The cracked longitudinal beam of a coach was analysed by means of metallography and SEM .

用金相、扫描电镜等分析方法,对开裂的客车纵梁进行了分析。

To improve the simulation accuracy and to make the increment of computation amount the smallest, the quantitative comparison was used to compare the effect of incident direction and difference accuracy on numerical dispersion with the changing of the ratio of horizontal and vertical gird. The results show that the rectangular grid is better than square mesh in suppressing dispersion and can avoid the low computational efficiency caused by high-order difference.

为提高模拟精度,同时又尽可能减少计算量,采用定量分析的方法,对比分析了横纵网格比变化时入射方向和差分精度等因素对数值频散的影响,分析结果表明,矩形网格较之正方形网格能更好地压制频散,同时可以避免高阶差分导致的低计算效率。

The analyzing system is tested by experimental data from Shanghai Maglev train, including transverse, longitudinal and vertical acceleration under different uniform motions. The sperling value, integrated comfort value and comfort values in three directions are calculated and compared with the analyzing report of Shanghai Maglev train, which proves the reliability of the sytem.

本文利用此分析系统对上海磁浮列车在不同匀速度行驶时的横、纵、垂向加速度的实验数据进行分析处理,计算了磁浮列车的平稳性指标、综合舒适度指标及各向舒适度指标,并将本分析系统的计算结果与上海磁浮列车分析报告中的计算结果进行比较,从而证实了此分析系统的可靠性。

According to research on space between wheel and Cart rut traverse curve of single roadway, the width of strip slab was fixed. When there was horizontal loading on slab, contact state between strip slab and base course was studied, and finite element model was established. Comparing maximum principle stress among different load position on slab, it was found that the critical loading position of cement concrete strips pavement was the middle of longitudinal joint.

对车辆轮距和单车道轮迹横向分布曲线进行分析,确定轮迹板板宽;在有水平荷载作用时,对轮迹板与基层的层间接触状态进行分析,建立有限元计算模型,对比荷载作用在轮迹板不同位置时的最大主应力,最终确定水泥混凝土轮迹路面板的临界荷位为纵缝边缘中部。

The following work has been done in the dissertation: LFM technique with quasi-single longitudinal laser diode is proposed, and the submodes effect in the laser diode on the displacement measuring range and accuracy is analyzed in detail.

在理论分析的基础上进行了大量实验。理论分析和实验结果表明,对于准单纵模半导体激光器线性调频干涉仪,半导体激光器的光频漂移,位相噪声以及边模效应对精度起主要作用。

Minimum rock cover thickness is obtained according to the Norwegian rock cover curve with sea water depth and the Norwegian rock cover curve with bedrock depth.

根据舟山灌门水道海底隧道地质纵断面图,选择控制垂直线路走向的3个分析断面,应用挪威经验得到相应分析断面的最小岩石覆盖厚度。

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