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利用ADMAS软件,建立了某道路清扫车的整车动力学模型。在利用离散梁原理建立等效板簧模型时,考虑到离散梁参数较难确定的特点,采用了参数反求的建模方法。以整车动力学模型为基础,分析了清扫车在工作时平顺性较差易导致的问题。同时,以清扫车工作时的平顺性改善为目标,对该车前悬架系统参数进行了优化,结果表明优化后清扫车工作时的平顺性得到了提高。 相似文献
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汽车的动力性和燃油经济性是其最基本与最重要的性能之一。为在汽车开发之初分析整车的动力性和燃油经济性,文章研究了动力性和燃油经济性的评价指标,合理选取整车参数,利用GTDRIVE软件对整车进行动力学和运动学建模与仿真计算。将仿真结果与试验结果对比,合理设置边界条件修正模型,最终得到较为精准的模型,使得在没有样车阶段,利用GT—DRIVE软件仿真可以得到整车的动力性和燃油经济性参数,能够对动力系统的匹配方案进行定量评价,为以后汽车的动力系统匹配优化提供一定的理论参考。 相似文献
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为实现对某商用车辆的性能评估、参数优化设计,利用MSC.ADAMS/CAR软件建立了整车动力学模型,在多体动力学的理论基础上,充分考虑减震器、橡胶衬套等元件的非线性特性。通过对整车动力学模型进行仿真分析,将悬架特性曲线与利用KC试验台得到的相应特性曲线进行比较分析,证明该多体动力学模型的合理性和适用性。 相似文献
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利用机械系统动力学分析软件ADAMS对散落物进行参数化建模,并进行了试验仿真,初步实现了在算机上对汽车散落物的仿真分析,通过与经典抛物运动模型的比较,验证了基于ADAMS散落物运动模型的可行性。 相似文献
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汽车—乘员三维多体系统碰撞仿真研究 总被引:1,自引:0,他引:1
本文以碰撞动力学和多体系动力学中的R-W方法为理论依据,建立了汽车-乘员三维多体系碰撞模型。在此基础上,开发了汽车碰撞计算机仿真软件SVC3D。仿真计算与试验结果的对比证明了模型的合理性及软件的正确性。 相似文献
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Summary This paper describes a flexible and modular 9-degrees-of-freedom nonlinear dynamic handling model for a tractor-semitrailer combination vehicle. The equations of motion are derived from the fundamental equations of dynamics in Euler’s formulation, with the use of general computer-algebra software. The primary aim of the model is simulation of handling scenarios with active yaw control, using unilateral braking. However, it may also prove useful in other areas of tractor-semitrailer handling analysis or hardware-in-the-loop simulations. The model is formulated as a state-space model that may be implemented in standard simulation environments. A Simulink implementation is presented, and simulation results are compared with experiments to validate the model. 相似文献
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Magnus G fvert Olof Lindg rde 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2004,41(1):51-82
Summary This paper describes a flexible and modular 9-degrees-of-freedom nonlinear dynamic handling model for a tractor-semitrailer combination vehicle. The equations of motion are derived from the fundamental equations of dynamics in Euler's formulation, with the use of general computer-algebra software. The primary aim of the model is simulation of handling scenarios with active yaw control, using unilateral braking. However, it may also prove useful in other areas of tractor-semitrailer handling analysis or hardware-in-the-loop simulations. The model is formulated as a state-space model that may be implemented in standard simulation environments. A Simulink implementation is presented, and simulation results are compared with experiments to validate the model. 相似文献
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用柔性多体动力学方法预测悬架对汽车转向特性的影响系数 总被引:3,自引:0,他引:3
利用柔性多体动力学方法建立了基于ADAMS软件平台的麦弗逊式独立悬架动力学仿真分析模型。并根据所建立的模型,对某轿车麦弗逊式前独立悬架的力变形特性进行了仿真和试验对比分析。通过仿真计算出了决定汽车不足转向度相关参数的相关系数。 相似文献
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Numerical Model of a Tilting Body Railway Vehicle Compared With Rig and on Track Tests 总被引:4,自引:0,他引:4
F. Cheli G. Diana F. Resta 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2001,35(6):417-442
The aim of the paper is to describe and verify a numerical model for the simulation of the dynamic behaviour of a tilting body railway vehicle, with particular attention to the curve negotiation conditions. In the model the dynamics of the tilting active control devices are reproduced, combining the numerical mechanical model of the vehicle with the control software used on the real vehicle. In order to validate the numerical simulation model, numerical results and experimental ones, from both a test rig and out-door tests, were compared. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(6):417-442
The aim of the paper is to describe and verify a numerical model for the simulation of the dynamic behaviour of a tilting body railway vehicle, with particular attention to the curve negotiation conditions. In the model the dynamics of the tilting active control devices are reproduced, combining the numerical mechanical model of the vehicle with the control software used on the real vehicle. In order to validate the numerical simulation model, numerical results and experimental ones, from both a test rig and out-door tests, were compared. 相似文献