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《筑路机械与施工机械化》2019,(11)
为研究T型牵引架的作业负载,基于CATIA DMU模块建立工作装置的运动仿真模型,通过仿真获取多种工况下T型牵引架的空间位置和关键球头点的空间坐标,建立局部坐标系,并对其等效约束;分析多种工况下的载荷,并等效到牵引架上。应用CATIA GAS模块和有限元法对T型牵引架进行网格划分、约束及负载的建立,并获得多工况下的静力强度分析。结果表明牵引架强度在许用强度范围内,该方法可简化多工况下T型牵引架的设计与分析。 相似文献
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首先利用ADAMS软件建立了分析电动助力转向系统的整车动力学仿真模型,然后利用建立的整车模型对直线型、折线型、曲线型三种助力特性进行操纵稳定性的仿真分析. 相似文献
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一种3t平衡重式叉车外门架结构与有限元分析验证 总被引:1,自引:0,他引:1
一种3t平衡重式叉车外门架结构,利用Solidworks软件对其进行实体建模,并将模型导入Ansys—workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,分析了外门架的强度,为3t平衡重式叉车外门架的设计提供了参考依据。 相似文献
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电动助力转向系统助力特性的仿真分析 总被引:1,自引:0,他引:1
首先利用ADAMS软件建立了分析电动助力转向系统的整车动力学仿真模型,然后系统分析了助力特性曲线的特征形式对转向轻便性和路感的影响。这种研究方法能缩短产品的开发周期、节约试验经费。 相似文献
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首先利用AMEsim软件建立电动助力转向系统的动力学模型,然后在Matlab/Simulink环境中设计电动助力转向系统的ECU模型。通过AMEsim与Simulink接口,将两个模块进行联合,实现两者的联合仿真。仿真结果表明,本文所提出的电动助力转向系统的动力学模型、控制策略、联合仿真算法是正确的、有效的。 相似文献
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针对冗余转向系统设计周期长、成本高的问题,提出了利用多体动力学软件ADAMS和控制仿真软件Simulink联合建立冗余转向系统虚拟样机系统的方法。在分析齿轮齿条动力学的基础上建立了转向系统动力学模型,基于Simulink建立冗余转向系统的控制模型,并在Simulink中搭建了联合仿真模型,利用该虚拟样机系统对设计的冗余转向系统进行助力性能仿真。通过仿真和试验验证,设计的冗余转向系统具有良好的助力性能且具有一定容错性,满足转向系统的使用要求;联合仿真所得数据和试验误差在5%以内,联合仿真的方法可行。 相似文献
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基于DEFORM软件V6.1版本,对机车牵引主动锥齿轮进行计算机热处理模拟分析,优化热处理工艺。利用UG软件对机车牵引主动锥齿轮建立三维非线性有限元模型,建立热处理过程中温度场、应力、相变等相互作用的数学模型,结合材料学、传热学、弹塑性力学和数学等多学科的理论知识,通过计算机模拟获得对内燃机机车牵引主动锥齿轮热处理工艺过程的变化规律的认识,使其热处理质量的精确控制和工艺优化,并有助于开发创新性工艺和设备。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(12):1107-1121
The traction control in modern electric and diesel electric locomotives has allowed rail operators to utilise high traction adhesion levels without undue risk of damage from uncontrolled wheel spin. At the same time, some locomotive manufacturers have developed passive steering locomotive bogies to reduce wheel rail wear and further improve locomotive adhesion performance on curves. High locomotive traction loads in curving are known to cause the loss of steering performance in passive steering bogies. At present there are few publications on the curving performance of locomotive steering with linkage bogies. The most extreme traction curving cases of low speed and high adhesion for hauling locomotives have not been fully investigated, with effects of coupler forces and cant excess being generally ignored. This paper presents a simulation study for three axle bogie locomotives in pusher and pulling train positions on tight curves. The simulation study uses moderate and high traction adhesion levels of 16.6% and 37% for various rail friction conditions. Curving performance is assessed, showing forced steering bogies to have considerable advantages over self steering bogies. Likewise it is shown that self steering bogies are significantly better than yaw relaxation bogies at improving steering under traction. As the required traction adhesion approaches the rail friction coefficient, steering performance of all bogies degrades and yaw of the bogie frame relative to the track increases. Operation with excess cant and tensile coupler forces are both found to be detrimental to the wear performance of all locomotive bogies, increasing the bogie frame yaw angles. Bogie frame pitching is also found to have significant effect on steering, causing increased performance differences between bogie designs. 相似文献
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现有电动汽车底盘普遍为在传统汽车的基础上进行的改进,不能很好的适应电动汽车特有的结构,为更好的实现四轮转向的功能,重新设计了适合四轮转向电动汽车的车架。应用三维软件SolidWorks,通过整车虚拟装配确定了合理的四轮转向电动汽车的车架结构,进而建立了车架的三维模型。运用有限元分析理论,将模型导入Ansys Workbench软件后,建立了车架的有限元模型,对车架在弯曲和扭转工况下的静态结构性能进行了分析,得出相应工况下的应力和应变大小;还进行了模态分析,避免了共振。在满足强度和刚度的条件下对车架结构进行了改进,并通过焊接加工得到了适合四轮转向电动汽车的车架,对以后电动汽车底盘的改进设计提供了参考。 相似文献
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运用有限元分析法,采用合理的模型简方法化建立某工程车车架CAE模型,运用有限元软件HyperMesh对不同横梁布置位置的车架进行弯曲和扭转两种工况的应力分析,为车架结构设计提供理论依据。 相似文献
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Zhiwei Wang Zhonghui Yin Yao Cheng Guanhua Huang Hangyu Zou 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2019,57(4):543-563
In this study, we developed a comprehensive three-dimensional vehicle–track coupled dynamics model considering the traction drive system and axle box bearing. In this model, dynamic interactions between the axle box bearing and other components, such as the wheelset and bogie frame, are considered based on a detailed analysis of the structural properties and working mechanism of the axle box bearing. A few complicated dynamic excitations, such as the time-varying mesh stiffness of gears, time-varying stiffness of bearing, bearing gaps and track irregularities, are considered. Then, the dynamic responses of the vehicle–track system are demonstrated via numerical simulations based on the established dynamics model. The results indicate that the traction drive system and track irregularities can significantly influence the dynamic interactions of the axle box bearing. The necessity of considering the excitation caused by gear meshing and track irregularities when assessing the dynamic performance of the axle box bearing is demonstrated. 相似文献
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重型载货汽车车架模态分析 总被引:1,自引:0,他引:1
运用HYPERMESH有限元分析软件建立了某重卡车架的模态分析有限元模型,计算得出该车架前10阶固有频率和固有振型,将计算结果与汽车受到的激励频率对比分析,讨论了车架在外部激励作用下可能发生共振的情况。 相似文献