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汽车驻车拉索支架设计的合理性直接影响着零部件的正常功能使用,而其支架的模态及强度性能是否满足要求又起到了关键性作用。文章通过数值模拟分析方法,对驻车拉索支架进行模态及强度仿真分析,结合应力最大的薄弱区域进行了结构优化设计。对优化方案重新进行仿真分析,分析结果满足零件设计性能要求,有效地指导了工程方案的改进设计,为相关车型支架设计及仿真分析提供了宝贵经验。 相似文献
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本文以HyperWorks10.0软件为工具,对某电动重卡的电机控制器支架进行了有限元分析,确定了支架的应力分布情况;同时对支架结构进行了拓扑优化,并将优化前后支架的应力、位移和质量做了比较。结果表明,优化后的支架既满足刚度和强度的要求,又有效地减轻了质量,达到轻量化设计的目的。 相似文献
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本文以HyperWorks10.0软件为工具,对江淮中重卡变速箱选换挡软轴固定支架进行了有限元分析,确定了支架的应力、形变分布情况;同时对支架结构进行了拓扑优化,并将优化前后支架的应力、位移和质量做了比较。结果表明,优化后的支架既满足刚度和强度的要求,又有效地减轻了质量,达到轻量化、降成本的设计目的。 相似文献
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介绍了混凝土搅拌运输车前后支架的重要作用,通过对前后支架五种工况下的有限元分析校核该结构的刚强度是否满足要求.根据分析的结果,对前后支架进行轻量化优化设计,再次通过有限元分析进行校核,验证了该设计更加合理,且自重降低,满足市场需求. 相似文献
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本文通过对某双前轴车辆的Ⅱ簧前支架进行强度有限元分析,结果显示该支架的强度完全满足设计要求。应轻量化要求,对原支架进行拓扑优化,优化后的支架在满足结构强度的同时,成功减重2kg,达到轻量化目标。 相似文献
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SL6400A轻型客车驻车制动器采用后桥车轮鼓式制动器,该车原驻车制动机构存在传动环节多、支座刚性差及拉索走向不合理等因素,致使左、右后轮制动力不平衡或不足,通过分析与对比,自行设计了一种新型驻车制动传动机构,该结构可通过平衡器的转动保证左、右后轮制动力不平衡或不足,通过分析与对比,自行设计了一种新型驻车制动传动机构,该结构可通过平衡器的转动保证左、右后拉索拉力相等。试验证明,驻车制动效果良好。 相似文献
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自动增力鼓式制动器因其结构简单、制动性能优良、维修方便,被广泛应用于轻型汽车的中央驻车制动系统。该制动系统常见的3种故障为制动不良、制动拖滞及制动手柄不易定位。结合实例介绍了该系统的故障现象、原因分析及故障排除。 相似文献
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对某越野车的双向鼓式制动器进行受力分析,通过计算得出制动销轴和制动支架受到的力,同时对材料进行硬度测试和金相组织分析,通过CATIA进行建模和有限元分析,并对其强度进行分析和计算,求解它的应力状态和位移变化。结果表明,该制动器的销轴和支架不能满足在强度上的设计要求,需要进行结构的优化和材料强度的加强,为该制动器的改进设计提供了有力的理论依据。 相似文献
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在分析论述DTQ6400轻型客车驻车制动传机构所在的问题及其影响因素的基础上,提出了改进方案,并自行设计,研制了一种新型结构。经试验证明,这种新的制动传动机构的结构简单,易维修,易调整,是切实可行的。 相似文献
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At conceptual design stage, automotive body is usually simplified as a frame structure, which consists of thinwalled beams (TWBs). Therefore, the most important issue is to determine the cross-sectional shape of TWBs under the requirement of mechanical properties. However, design engineers mostly depend on their experience or repeated modification to design the cross-sectional shape of TWBs. So this paper presents a rapidly cross-sectional shape design and optimization method to satisfy the demand of mechanical properties and meanwhile minimize the weight of TWB. Firstly, cross-sectional mechanics property formulations are summarized. Especially, the torsional rigidity formulation of three-cell cross section is derived for the first time in this paper. Secondly, the shape optimization model is created to minimize the weight of TWB and improve the mechanical properties, which is solved by genetic algorithm. Moreover, three stamping constraints, draft angle, chamfer radius and assembly, are introduced to promote the cross-sectional shape more practice. Lastly, numerical examples verify the effectiveness of the optimization model and show the application in structural modification of automotive frame. 相似文献
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Design and use of an eddy current retarder in an automobile 总被引:1,自引:0,他引:1
In this study, the structure and working principles of an eddy current retarder acting as an auxiliary brake set is introduced
in detail. Based on the principle of energy conservation, a mathematical model was developed to design a retarder whose nominal
brake torque is 1, 900 N·m. According to the characteristics of the eddy current retarder, an exclusive test bed was developed
and used for brake performance measurements. The main technical parameters, such as the brake characteristics, temperature
characteristics and power consumption, were measured with the test bed. The test data show that the brake torque of the eddy
current retarder obviously decreased in the continuous braking stage and that there is a certain amount of brake torque in
the normal driving state because of the remnant magnetism of the rotor plate. The mathematical model could be used to design
an eddy current retarder. The exclusive test bed could be used for optimization of an eddy current retarder as well as for
R&D of a series of products. 相似文献