共查询到20条相似文献,搜索用时 125 毫秒
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文章通过Hyperworks软件对散热器支架进行了仿真分析,判断了散热器支架高强耐久试验时的破坏原因。对散热器支架方案进行了设计改善,通过改进方案的仿真设计,找出了满足强度要求的方案,为今后的汽车散热器支架设计开发提供了可借鉴的方法。 相似文献
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汽车电子元器件长期处于恶劣的运行条件下,会对其生命周期产生较大影响,降低汽车部件的耐用性。针对汽车空调电器盒引脚断裂问题,采用 X 射线确定其引脚断裂是由环境振动造成的。对该电器盒内印制电路板进行动力学分析、模态仿真及振动应力仿真分析,确定电器盒引脚断裂问题的最优改进方案是增加电器盒螺栓固定数量。对改进后方案进行仿真分析与试验验证,试验结果均满足使用要求,证明该方案可行。 相似文献
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介绍了2010年上海世博会燃料电池汽车项目散热器模块的设计方案,通过理论计算得到了各散热器的散热量,基本满足设计要求.为进一步了解汽车前舱内各部件的传热及流场特性,对汽车发动机前舱进行了CFD仿真研究.最后通过散热器性能试验验证了方案设计的可行性,并对散热器的结构进行了改进. 相似文献
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基于对车辆悬架动力学性能的主观评估和试验数据的分析,统计了舒适型轿车在典型路况下的车轮跳动速度范围,考虑到阻尼对车辆平顺性、操控性和耐久性能的综合影响,给出了舒适型轿车减振器特性曲线的设计范围和趋势。 相似文献
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橡胶元件在汽车悬架中的应用分析 总被引:3,自引:0,他引:3
介绍了橡胶元件在汽车悬架中的应用现状,分析了橡胶衬套力学特性的理论研究方法和试验技术,并对某汽车悬架橡胶衬套进行了有限元分析和试验验证。阐述了橡胶衬套对汽车平顺性、操纵稳定性及高频NVH特性的影响,并通过实例讨论了橡胶衬套对悬架运动学性能的作用和衬套刚度优化方法。指出,需进一步研究橡胶元件对汽车高频动态性能的影响。 相似文献
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A. Horn P. Voelsen 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1981,10(1):1-19
Vehicle Handling Characteristics and Their Relationship to Vehicle Design Parameters
This paper reviews currently used test procedures for the determination of vehicle handling characteristics in the time and frequency domain. Driver subjective opinions lead to preferred tendencies or ranges of these quantities. The results of closed-loop tests show the adaptability of drivers to the dynamic characteristics of vehicles. The relationship between handling characteristics and design parameters is obtained from the analysis of a simple vehicle model. Comparison of these results with the prefered ranges found in closed-loop tests yields aids for the design of vehicles. 相似文献
This paper reviews currently used test procedures for the determination of vehicle handling characteristics in the time and frequency domain. Driver subjective opinions lead to preferred tendencies or ranges of these quantities. The results of closed-loop tests show the adaptability of drivers to the dynamic characteristics of vehicles. The relationship between handling characteristics and design parameters is obtained from the analysis of a simple vehicle model. Comparison of these results with the prefered ranges found in closed-loop tests yields aids for the design of vehicles. 相似文献
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江铃轻型货车行驶平顺性的改善 总被引:3,自引:0,他引:3
本文针对江铃轻型货车行驶平顺性不佳问题。进行了系统的道路试验,电液伺服模拟激振试验,模态试验和理论分析;查明了该车平顺性不佳的主要原因是前后悬架刚度过大,特别是后悬架在空载时;在不改变钢板弹簧安装尺寸的条件下对前后板簧进行了改进设计。试制后装车试验表明,行驶平顺性显著提高,操纵稳定性有一定改善。改进型板簧、台架的疲劳寿命达到了标准要求,在行驶可靠性试验中未出现板簧损坏。改进型板簧比原车板簧质量减轻 相似文献
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根据半挂牵引车的特点,引入并修改了国外广泛应用的中间位置转向操纵稳定性试验方法,介绍了对试验结果的评价方法,并结合某国产牵引车和Scania360型牵引车进行了试验验证。通过试验发现,国产牵引车在路感、转向响应等方面都需进行改进;该试验方法在半挂牵引车操纵稳定性试验中应用是可行的。 相似文献
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Michele Beato Vincenzo Ciaravola Michele Russo Agostino Volpe 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2000,34(2):117-129
The lateral tyre force versus slip angle and vertical load is obtained through specific tests on the single tyre or with a theoretical-empirical analysis with physical models. This study is about the possibility to use a third way: Executing a particular handling test, known as Force-Moment test, using a Flat Track Roadway Simulator (the Fiat-Elasis MTS FTRS). The understanding and the project of vehicle handling is strongly based on the knowledge of lateral tyre force response [1, 2, 3, 7]. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(2):117-129
The lateral tyre force versus slip angle and vertical load is obtained through specific tests on the single tyre or with a theoretical-empirical analysis with physical models. This study is about the possibility to use a third way: Executing a particular handling test, known as Force-Moment test, using a Flat Track Roadway Simulator (the Fiat-Elasis MTS FTRS). The understanding and the project of vehicle handling is strongly based on the knowledge of lateral tyre force response [1, 2, 3, 7]. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(12):1837-1854
There have been several investigations to find out how drivers experience a change in vehicle-handling behaviour. However, the hypothesis that there is a correlation between what the driver perceives and vehicle- handling properties remains to be verified. To define what people feel, the human feeling of steering systems was divided into dimensions of perception. Then 28 test drivers rated different steering system characteristics of a semi-trailer tractor combination in a moving base-driving simulator. Characteristics of the steering system differed in friction, damping, inertia and stiffness. The same steering system characteristics were also tested in accordance with international standards of vehicle-handling tests resulting in characteristic quantities. The instrumental measurements and the non-instrumental ratings were analysed with respect to correlation between each other with the help of regression analysis and neural networks. Results show that there are correlations between measurements and ratings. Moreover, it is shown that which one of the handling variables influence the different dimensions of the steering feel. 相似文献