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material performance
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  材料性能
    With the design of the fundamental brake for 270 km·h-1 highspeed train, the load mechanism, material performance and limit of disc braking power are calculated and analyzed based on tremendous tests and simulation computations.
    结合270km·h-1高速列车基础制动系统的研制现状,在大量试验和仿真计算的基础上,计算和分折盘形制动的受载机理、材料性能及盘形制动功率极限。
短句来源
    In view of the structure features of the spiral springs with two-stage stiffness, with full consideration of the effect of such random factors as the material performance and spring load, the reliability optimization design method of the spiral spring group with the two-stage stiffness is put forward according to the principle that the maximum reliability shall be sought under the prerequisite of satisfying the spring features and installation space.
    针对两级刚度螺旋弹簧的结构特点 ,充分考虑到材料性能和弹簧载荷等随机因素的影响 ,按照在满足弹簧特性和安装空间要求的前提下追求可靠度最大的原则 ,提出了两级刚度螺旋弹簧组的可靠性优化设计方法
短句来源
    These researches have involved carbon-carbon composite, ceramic materials, aluminum-based ceramic-reinforced composite material and material surface reinforcing technology to improve the material performance for high-speed train braking discs.
    研究用C—C纤维复合材料、陶瓷材料、铝基陶瓷强化复合材料,以及材料表面强化技术等改善高速列车制动盘材料性能的问题。
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  material performance
Structural material performance has often limited the potential performance of space reactors.
      
The level and stability of the mechanical work generated by the material during low-cycle fatigue testing are considered criteria for the material performance and thus of the validity of the proposed optimization procedure.
      
As the demands for improved material performance and process economics increase, the aforementioned shortcomings become increasingly important.
      
Testing showed that the properties of welded 5182/5754 alloy pairs retained reasonably good formability compared to base material performance.
      
The thermoelectric power coefficient has been determined in this investigation to be a rapid and accurate measurement that can be used for microstructural assessment and correlated to achieve the maximum material performance of structural alloys.
      
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The fatigue test program for side frame of grade B steel is researched and discussed by means of comparing material performances of grade B steel and ZG25,analyzing original test standard of side frame and estimating service life of side frams of grade B steel.The result in this paper can be referred to by related departments.

通过对 B级钢与 ZG2 5材料性能的比较、侧架原试验标准的分析、B级钢侧架的寿命估算等研究 ,就侧架在B级钢下的疲劳试验方案进行了研讨 ,所得结果可供有关部门参考

With the design of the fundamental brake for 270 km·h-1 highspeed train, the load mechanism, material performance and limit of disc braking power are calculated and analyzed based on tremendous tests and simulation computations. The braking force distributions in different cases of compound brake and air brake have been compared, and the brake cylinder pressure for motor car and the trailer is calculated. When 270 km·h-1 highspeed train applies the dynamic brake and the disc brake, the calculated...

With the design of the fundamental brake for 270 km·h-1 highspeed train, the load mechanism, material performance and limit of disc braking power are calculated and analyzed based on tremendous tests and simulation computations. The braking force distributions in different cases of compound brake and air brake have been compared, and the brake cylinder pressure for motor car and the trailer is calculated. When 270 km·h-1 highspeed train applies the dynamic brake and the disc brake, the calculated stopping distance is 3 5147 m. It can satisfy the requirement of emergency stopping distance of less than 3 700 m at initial speed of 270 km·h-1. In addition, train running over 250 km·h-1 should adopt many other braking systems such as eddy current brake, electromagnetic rail brake at the same time, besides dynamic brake and disc brake. Through these measures, the load of disc brake can be reduced, the service life of the brake disc and brake pad prolonged, and the operational cost reduced.

结合270km·h-1高速列车基础制动系统的研制现状,在大量试验和仿真计算的基础上,计算和分折盘形制动的受载机理、材料性能及盘形制动功率极限。通过比选分配复合制动和纯空气制动等不同工况的制动力,计算动力车和拖车的制动缸压力。通过计算分析得出,270km·h-1高速列车采用动力制动和盘形制动时的制动距离为3514 7m,能够满足高速列车的制动初速为270km·h-1时紧急制动距离小于3700m的要求。但是,经分析认为当运行速度超过250km·h-1时,除采用动力制动和盘形制动外,还是应同时采用涡流制动、磁轨制动等多种制动方式,以减轻盘形制动的负荷,延长制动盘和闸片的使用寿命,降低运营成本。

The chemical principle, key technique and material performance of the technology of spray painting of polyurea resilient body are described. The application of the technology on locomotives and rolling stock is prospected.

介绍了喷涂聚脲弹性体技术的化学原理、关键技术和材料性能 ,展望了该项技术在机车车辆中的应用前景

 
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