共查询到19条相似文献,搜索用时 156 毫秒
1.
2.
3.
4.
5.
基于上海大众汽车后桥认证过程中采集的大量后桥测量轮6分力载荷数据,借助统计分析工具获得合适的后桥特征值,对历史数据进行归一化处理,推导出后桥的轴头6分力输入的SVP标准载荷谱。为后桥总成的前期开发、计算分析、结构优化以及疲劳寿命的早期判断提供输入载荷依据,为缩短底盘零部件分总成的开发周期服务。 相似文献
6.
T-car后桥台架疲劳试验研究 总被引:1,自引:1,他引:1
采用台架疲劳试验模拟了T-car后桥在道路试验中的受力状态。通过对T-car后桥进行的总成扭转试验、总成单侧侧向力试验和总成单侧纵向力试验,测得了各测点在疲劳循环中的应变幅、主应变幅度,并采用Coffin-M anson公式估算了寿命。试验表明,台架疲劳试验能反映路试时的疲劳损伤,根据T-car后桥用钢的应变疲劳性能估算得到的疲劳寿命与实际路试结果相符。 相似文献
7.
8.
9.
10.
11.
Taekyong Jeong Sang Beom Lee Hong Jae Yim 《International Journal of Automotive Technology》2017,18(5):813-822
In this study, shape optimization was conducted for a vehicle’s rear suspension torsion beam to improve its dynamic handling performance. To determine the design variables affecting the vehicle roll characteristics, a sensitivity analysis was conducted using the result of a Taguchi experiment with 6 factors in 8 runs. The upper and lower-flange lengths and web thickness of the torsion beam section, as well as the vertical height difference between the inner and outer of torsion beams, were determined as design variables through sensitivity analysis of the opposite wheel travel test for optimization of the torsion beam axle. The Box–Behnken experimental design with 4 factors and 27 runs was performed using the selected design variables and by performing opposite wheel travel analysis according to the experimental design, and the response surface functions of the roll stiffness, roll steer coefficient, roll center height, and mass of the torsion beam were generated. Using these response functions, shape optimization was conducted for the torsion beam of the rear suspension system. Dynamic performance analysis was performed by applying the optimized H-shaped torsion beam to the rear suspension of the vehicle dynamics model, and it was validated that the dynamic response performance of the optimized vehicle was improved. 相似文献
12.
B. -L. Choi D. -H. Choi J. Min K. Jeon J. Park S. Choi J. -M. Ko 《International Journal of Automotive Technology》2009,10(1):49-54
This research proposes an automatic torsion beam axle optimization process with a multidisciplinary approach and generates
the optimal torsion design parameters, such as thickness and shape. In order to construct an automatic analysis process, multidisciplinary
analysis models, such as modal analysis, roll mode dynamic analysis, and fatigue analysis, were applied in batch mode. To
understand the design space, a parametric study using the torsion beam thickness and shape was performed. Considering roll
durability and K&C characteristics, the torsion beam axle could be optimized. For the automated design process, a PIDO tool
called PIAnO was used. In conclusion, a reduction in the computer-aided simulation time was achieved, and the durability and
K&C characteristics of the torsion beam were enhanced by optimizing the thickness and shape. 相似文献
13.
14.
15.
在ADAMs/Engine模块中将GY6型发动机后传动系统中的齿轮等重要部件参数化,建立参数化动力学模型,并以此为基础对不同参数的传动系统进行仿真。通过后处理可输出啮合齿轮的啮合力及切向分力、法向分力、轴向分力,扭矩,齿轮对轴的作用力及各传动轴的速度,加速度动态曲线等,为齿轮和轴的强度校核、GY6型发动机后传动机构优化及噪声控制提供了依据。 相似文献
16.
根据对汽车制动过程的受力分析,建立理想制动力I曲线,初步确定前后轴制动力分配比,据ECE制动法规优化建模后,最终确定最佳制动力分配比,进而选定制动阀。 相似文献
17.
18.
本文在切诺基吉普车实车试验的基础上,结合其它轿车的试验结果,对制动标准中有关轿车轴间制动力分配的要求进行了研究。结果表明,为获得良好的制动稳定性,较高的制动效能,增加前轴制动力,减少后轴制动力是现代轿车轴间制动分配设计的发展趋势;要求过大的后轴制动力,在常遇路面上强力制动,将会导致后轮首先抱死,与ECER13要求不相符。 相似文献