共查询到20条相似文献,搜索用时 171 毫秒
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为快速获得准确的扭力梁悬架有限元模型而提出基于试验的模型修正法,即在扭力梁悬架扭转刚度测试试验基础上,通过调整悬架减振器处的质点质量及模拟弹簧的梁密度,以修正扭力梁悬架有限元模型。将修正前、后扭力梁悬架有限元模型计算的刚度特性与通过试验获取的刚度特性进行对比表明,该方法能有效提高模型计算速度和精度。 相似文献
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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
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扭转梁后桥开发过程中,须按照从整车技术要求分解出的零部件技术规范进行设计,并借助CAE优化技术对零部件各性能进行优化。本文主要针对某型扭转梁后桥侧向力耐久疲劳和减振器力耐久疲劳工况进行优化分析,结构优化后耐久疲劳寿命提高。实物样件台架验证结果与优化仿真分析结果基本一致。 相似文献
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存后扭力梁开发过程中,扭力梁本体和扭力梁加强件之间焊缝的收弧引出段在扭转疲劳试验中发生早期开裂,对早期开裂原因进行了分析,制定了解决措施,满足了产品质量要求。 相似文献
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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
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根据后扭力梁产品结构特点及设计质量要求,对后扭力梁的焊接进行工艺分析,通过制定完整的焊接工艺方案来满足产品设计质量要求。 相似文献
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RAP中细集料的老化沥青含量大,再生利用价值高,将RAP应用于应力吸收层混合料,可最大资源化提升RAP再生利用价值,降低应力吸收层混合料建设成本。采用车辙试验、小梁弯曲试验、预切缝半圆弯拉试验、复合梁试件扭剪试验、拉拔试验、扭剪疲劳试验、Over Test评价热再生应力吸收层混合料的高低温性能、层间抗剪切性能、抗剪切疲劳性能和抗反射裂缝性能。结果表明:随着RAP掺配比例增大,热再生应力吸收层混合料的油石比降低、高温性能增强,但增大RAP掺量导致热再生应力吸收层混合料低温弯曲应变、断裂能、扭剪强度、拉拔强度、扭剪疲劳寿命和抗反射裂缝性能均降低。在50%RAP掺量下,热再生应力吸收层混合料的动稳定度3 604次/mm,低温弯曲应变4 890με,且Over Test(OT)加载达到了1 200周期,聚合物胶粉复合改性沥青热再生料应力吸收层混合料具有优异的高温韧性和低温延展性与抗反射裂缝性能。 相似文献
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