共查询到20条相似文献,搜索用时 31 毫秒
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针对唐山市电动汽车重点实验室前期研制的微型聊光旅游电动汽车转弯行驶时产生较严重侧倾、较大幅度摆动等问题,以多体动力学理论为基础,在虚拟样机软件ADAMS中建立电动汽车整车模型。在Car模块中设置汽车稳态回转试验参数界面,进行定转向盘转角仿真。在ADAMS/Postprocessor中绘制汽车侧倾角、侧向加速度等参数变化曲线并进行分析和评价,得出此微型观光旅游电动汽车操纵稳定性能。基于以上仿真分析,为进一步对此电动汽车进行操纵稳定性优化提供一定理论依据和方向。 相似文献
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Application of Taguchi and response surface methodologies for surface roughness in machining glass fiber reinforced plastics by PCD tooling 总被引:1,自引:1,他引:0
This paper discusses the use of Taguchi and response surface methodologies for minimizing the surface roughness in machining
glass fiber reinforced (GFRP) plastics with a polycrystalline diamond (PCD) tool. The experiments have been conducted using
Taguchi’s experimental design technique. The cutting parameters used are cutting speed, feed and depth of cut. The effect
of cutting parameters on surface roughness is evaluated and the optimum cutting condition for minimizing the surface roughness
is determined. A second-order model has been established between the cutting parameters and surface roughness using response
surface methodology. The experimental results reveal that the most significant machining parameter for surface roughness is
feed followed by cutting speed. The predicted values and measured values are fairly close, which indicates that the developed
model can be effectively used to predict the surface roughness in the machining of GFRP composites. The predicted values are
confirmed by using validation experiments. 相似文献
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Currently, many research from domestic and foreign on improving anti-rollover performance of vehicle mainly focus on the electronic control of auxiliary equipment, do not make full use of suspension layout to optimize anti-rollover performance of vehicle. This investigation into anti-rollover propensity improvement concentrates on the vehicle parameters greatly influencing on anti-rollover propensity of vehicle. A simulation based on fishhook procedure is used to perform design trials and evaluations aimed at ensuring an optimal balance between vehicle's design parameters and various engineering capacities, the anti-rollover propensity is optimized at the detailed design stage of a new SUV model. Firstly a four-DOF theoretical kinematic model is established, then a complete multi-body dynamics model built in ADAMS/car based on the whole vehicle parameters is correlated to the objective handing and stability test results of a mule car. Secondly, in fishhook test simulations, the Design of Experiments method is used to quantify the effect of the vehicle parameters on the anti-rollover performance. By means of the simulation, the roll center height of front suspension should be more than 30 mm, that of rear suspension less than 150 mm, and the HCG less than 620 mm for the SUV. The ratio of front to rear suspension roll stiffness should be ranged from 1.4 to 1.6 for the SUV. As a result, at the detailed design stage of product, the anti-rollover performance of vehicle can be improved by optimizing chassis and integrated vehicle parameters. 相似文献
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面向SUV车型操纵稳定性的多体动力学建模与仿真 总被引:3,自引:0,他引:3
运用ADAMS软件,建立了某SUV车型的整车多体动力学模型,对该车型的前悬架及整车分别进行了前轮定位参数及动力学仿真研究和整车操纵稳定性仿真分析。在构建前悬架系统模型时,应用BEAM梁原理建立了准确反映弹性变形的后悬架模型。研究了前悬架的前轮定位参数随车轮跳动变化的规律,根据开环模型操纵稳定性的3种评价方法在ADAMS中进行了操纵稳定性仿真试验。仿真计算与分析说明,建立的SUV前悬架和整车多体系统模型与实际车型在主要性能参数及其变化趋势上相符。仿真计算与分析结果得到了该车型生产厂家的认可。 相似文献
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基于ADAMS的双横臂悬架性能多目标优化研究 总被引:4,自引:0,他引:4
针对某微型电动车操纵稳定性不佳的问题,基于ADAMS/Car建立了某双横臂前悬架运动学模型并对其进行了仿真分析,利用ADAMS/Insight选取了适当的硬点坐标作为优化变量,以各定位参数变化范围最小为优化目标,采用统一目标法将多目标函数转化为单目标函数,并在ADAMS/View中对前轮定位参数进行了优化.仿真结果表明:该双横臂悬架的运动学性能得到了有效改善. 相似文献
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Hasan Kurtaran Tuncay Erzurumlu 《The International Journal of Advanced Manufacturing Technology》2006,27(5-6):468-472
During the production of thin shell plastic parts by injection molding, warpage depending on the process conditions is often
encountered. In this study, efficient minimization of warpage on thin shell plastic parts by integrating finite element (FE)
analysis, statistical design of experiment method, response surface methodology (RSM), and genetic algorithm (GA) is investigated.
A bus ceiling lamp base is considered as a thin shell plastic part example. To achieve the minimum warpage, optimum process
condition parameters are determined. Mold temperature, melt temperature, packing pressure, packing time, and cooling time
are considered as process condition parameters. FE analyses are conducted for a combination of process parameters organized
using statistical three-level full factorial experimental design. The most important process parameters influencing warpage
are determined using FE analysis results based on analysis of variance (ANOVA) method. A predictive response surface model
for warpage data is created using RSM. The response surface (RS) model is interfaced with an effective GA to find the optimum
process parameter values. 相似文献
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利用ADAMS完成了汽车模型的构建。通过改变轮胎轮面谱相关参数实现车辆爬坡仿真工况,从而为同类车辆在虚拟环境下研究各种工况提供了新的手段,并为同类车辆进行深层次的设计和优化奠定基础。 相似文献
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基于ADAMS/VIEW的混凝土泵车臂架变幅机构的仿真及优化设计 总被引:2,自引:0,他引:2
通过Pro/E软件建立某混凝土泵车臂架变幅机构的三维实体模型,将其导入ADAMS中,分析多种工况下的臂架仿真运动,找出最危险工况时油缸的最大受力,并利用ADAMs的DOE(Degign Of Experiments)手段,很好地完成了臂架变幅机构的优化设计,明显地减小了油缸的最大受力,极大地提高了臂架系统的工作性能,为混凝土泵车臂架系统的动力学仿真提供了较为实用的分析方法. 相似文献
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基于逐步回归模型的汽车碰撞安全性多目标优化 总被引:11,自引:2,他引:9
汽车结构的耐撞性及碰撞吸能优化是现代汽车工业的重要研究内容。面对传统优化方法难以找到汽车结构耐撞性问题多目标参数最优解的难题,在汽车结构碰撞安全性问题的研究中,结合试验设计、响应表面模型和有限元仿真程序提出一种基于逐步回归模型的多目标优化设计方法。利用该方法对以汽车前端结构的加强件作为设计变量,以整车质量、脚踏板在碰撞过程中的侵入量和整车碰撞加速度积分值作为目标函数的汽车100%正面碰撞以及40%正面偏置碰撞的多目标优化问题进行仿真优化研究,结果表明该方法对于汽车结构碰撞安全性的优化具有明显的效果。 相似文献
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以多体动力学软件ADAMS为基础,针对车辆行驶平顺性的优化设计进行了二次开发,所设计的平台对整车模型主要减震部件的刚度和阻尼进行参数化设计,并利用二次开发后的ADAMS软件对某车型进行了分析与优化,根据优化结果对该车型进行了改进,实际验证了此次二次开发的正确性。 相似文献
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以多刚体系统动力学理论为基础,利用软件ADAMS建立某型车多体动力学参数化仿真模型。通过改变结构参数、载荷等参数数值,分析前轮定位参数在不同工作状态下的运动特性。最后,以车轮跳动过程中车轮摆角最小、汽车行驶过程中前轮外倾角值接近0°为优化目标对前轮定位参数进行了设计研究。设计结果表明:该设计方法优于传统的经验公式设计方法。 相似文献