共查询到20条相似文献,搜索用时 906 毫秒
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为实现结构优化和材料替换的混合结构设计,提出钢塑一体轻量化车身结构。以一简单试件验证了钢塑一体结构的可行性;根据灵敏度结果,在普通钣金结构车身的基础上构建了钢塑一体车身结构并对其进行尺寸优化。优化结果表明,钢塑一体车身结构在总质量降低51 kg的基础上,其静、动态特性均有不同程度的改善。最后,通过发动机罩总成试验验证了钢塑一体车身结构的轻量化优势。 相似文献
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针对某型号客车在行驶过程中出现的车窗窗框结构破坏现象,采用有限元方法对客车车身结构作静态强度分析和模态分析,并在此基础上对车身结构作故障诊断,以确定导致车身结构破坏的原因.在整个研究过程中,确立了客车车身结构有限元分析的建模方法和模拟原则,并将静强度计算与模态分析方法结合起来计算客车车身模态下的应力,为今后的客车车身结构故障诊断提供一种新的思路和方法. 相似文献
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<正>汽车车身在汽车各总成中变化较大,技术含量多,维修技术复杂。现代汽车车身大多数采用了整体式车身结构,重量轻、结构紧凑、安全性好。汽车在设计制造过程中,为了确保乘员的安全,采用了一系列车身防碰撞设置。汽车维修人员应熟悉车身结构和特点,懂得车身结构的防碰撞理念,才能在汽车碰撞修复工作中,采用正确的工艺方法让汽车最大限度恢复防碰撞的功能。为此,本文将从车身结构的变化及其特点、汽车车身防碰撞设置及如何采用正确维修技术进行维修等方面进行重点解析。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(9):835-847
In order to improve the ride comfort of lightweight railway vehicles, an active vibration reduction system using piezo-stack actuators is proposed and studied in simulations. The system consists of actuators and sensors mounted on the vehicle car body. Via a feedback control loop, the output signals of the sensors which are measuring the flexible deformation of the car body generate a bending moment, which is directly applied to the car body by the actuators. This bending moment reduces the structural vibration of the vehicle car body. Simulations have shown that a significant reduction in the vibration level is achieved. 相似文献
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Gerhard Schandl Peter Lugner Christian Benatzky Martin Kozek Anton Stribersky 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2007,45(9):835-847
In order to improve the ride comfort of lightweight railway vehicles, an active vibration reduction system using piezo-stack actuators is proposed and studied in simulations. The system consists of actuators and sensors mounted on the vehicle car body. Via a feedback control loop, the output signals of the sensors which are measuring the flexible deformation of the car body generate a bending moment, which is directly applied to the car body by the actuators. This bending moment reduces the structural vibration of the vehicle car body. Simulations have shown that a significant reduction in the vibration level is achieved. 相似文献
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轿车车身结构动力学分析 总被引:4,自引:0,他引:4
利用有限元分析的方法对轿车车身骨架结构进行了动力学分析,通过对改变车身结构情况分析计算,研究了车身结构与其固有频率和振动的关系,结果表明:对于管式骨架式轿车车身,可改变钢管外径来解决共振问题。钢管外径和壁厚对其振型改变很小。进行局部加强也可改变整个车身结构的频率,而且对减小局部大变形有较好的效果。 相似文献