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基于刚柔耦合的履带起重机虚拟样机建模技术 总被引:3,自引:0,他引:3
针对系统建模的复杂性,提出了基于多种软件集成的刚-柔耦合建模技术,建立了350t履带起重机虚拟样机,建模过程中实现了Pro/E-ADAMS-ANSYS的仿真环境的相互集成,利用软件各自的优势完成了虚拟样机的动力学特性分析,仿真结果验证了虚拟样机在产品开发中的有效性. 相似文献
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为实现对重载机械软启动装置性能的准确评估,将虚拟样机技术应用于该产品的设计开发中。在三维建模软件Pro/Engineer环境下构建族表式及参数式零件库,并混合运用由顶向下和由底向上两种装配模式完成了该软启动装置的虚拟样机模型。采用多刚体动力学软件ADAMS分别完成了运动学及动力学仿真分析,得出了控制电机与主电机的最佳功率比。仿真结果验证了机构设计的合理性与可靠性。 相似文献
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运用Pro/E软件建立了零件三维实体模型,完成伺服油缸的虚拟装配,并与机械系统动力学仿真软件ADAMS相结合,利用Pro/E与ADAMS的接口程序MECH/Pro将装配模型导入到ADAMS环境中进行仿真研究及结果分析,通过与实际物理样机比较,验证了伺服油缸虚拟设计的可行性,为后期样机制造和结构优化提供了理论依据和技术支持. 相似文献
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基于ADAMS的集中质量铰接式自卸车平顺性仿真研究 总被引:1,自引:0,他引:1
根据振动力学和多刚体系统动力学原理,分析了某铰接式自卸车的振动模型,同时进行简化,建立了集中质量的虚拟样机模型,并在虚拟样机软件ADAMS上进行仿真。通过试验对比验证了仿真方法的可行性和仿真模型的可靠性。因此,可用该模型计算随机激励下铰接式自卸车的响应,并进行整车动力学分析和悬架系统参数优化设计。 相似文献
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根据振动力学以及多刚体系统动力学原理,分析了某铰接式自卸车的振动模型,同时进行合理的简化,建立了集中质量的虚拟样机模型,并在虚拟样机软件ADAMS上进行仿真.通过与试验的对比,也验证了仿真方法可行,仿真模型可靠.因此可用该模型计算随机激励下铰接式自卸车的响应,并进行整车动力学分析和悬架系统参数优化设计. 相似文献
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根据振动力学以及多刚体系统动力学原理,分析了某铰接式自卸车的振动模型,同时进行合理的简化,建立了集中质量的虚拟样机模型,并在虚拟样机软件ADAMS上进行仿真。通过与试验的对比,也验证了仿真方法可行,仿真模型可靠。因此可用该模型计算随机激励下铰接式自卸车的响应,并进行整车动力学分析和悬架系统参数优化设计。 相似文献
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六自由度机械手广泛地应用于工业、农业等领域中,发挥着重要的作用。为此,设计了一种六自由度机械手,并基于虚拟样机技术进行了建模与仿真。首先,利用Pro/ENGINEER软件,建立了一种六自由度机械手机械系统的三维模型;其次,利用Pro/ENGINEER的模块对机械手进行了虚拟装配;接着,采用专用接口模块Mechanism/Pro将模型导入动力学仿真软件MSC.ADAMS;之后,利用MSC.ADAMS软件对机械手进行虚拟样机动力学干涉检查,验证运动锁止位置的合理性并绘制出相关特性曲线,为加工六自由度机械手物理样机提供了依据。 相似文献
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针对风电机组传动链在工作转速范围内的扭转共振问题,基于GL2010标准,结合动力学仿真软件SIMPACK和有限元分析软件ANSYS,建立了某兆瓦级风电机组传动链的多柔体动力学仿真模型,并使用模态分析方法对传动链动力学仿真模型进行了频域响应分析,基于2D坎贝尔图和模态能量分布图,筛选出了传动链的潜在共振点,最终通过时域仿真分析,对相关部件的加速度进行了傅里叶变换,进一步验证了该潜在共振点是否是实际的危险共振点。研究结果表明,该机型风电机组传动链不存在危险的共振频率,在工作转速范围内能够安全稳定地运行;该方法可为风电机组的稳定性和可靠性设计提供依据。 相似文献
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传动效率是金属带式CVT的一项重要性能指标,通过CVT传动机理分析了影响CVT传动效率的主要因素,并在机械动力学分析软件ADAMS平台上,针对CVT的各种功率损失原因建立ADAMS力学模型,本仿真分析了在不同的转矩比和传动比情况下金属带与锥盘间的不同功率损失形式。研究成果对优化CVT控制有一定指导意义。 相似文献
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Dynamic Modeling of a Roller Chain Drive System Considering the Flexibility of Input Shaft 总被引:1,自引:0,他引:1
Roller chain drives are widely used in various high-speed, high-load and power transmission applications, but their complex dynamic behavior is not well researched. Most studies were only focused on the analysis of the vibration of chain tight span, and in these models, many factors are neglected. In this paper, a mathematical model is developed to calculate the dynamic response of a roller chain drive working at constant or variable speed condition. In the model, the complete chain transmission with two sprockets and the necessary tight and slack spans is used. The effect of the flexibility of input shaft on dynamic response of the chain system is taken into account, as well as the elastic deformation in the chain, the inertial forces, the gravity and the torque on driven shaft. The nonlinear equations of movement are derived from using Lagrange equations and solved numerically. Given the center distance and the two initial position angles of teeth on driving and driven sprockets corresponding to the first seating roller on each side of the tight span, dynamics of any roller chain drive with two sprockets and two spans can be analyzed by the procedure. Finally, a numerical example is given and the validity of the procedure developed is demonstrated by analyzing the dynamic behavior of a typical roller chain drive. The model can well simulate the transverse and longitudinal vibration of the chain spans and the torsional vibration of the sprockets. This study can provide an effective method for the analysis of the dynamic characteristics of all the chain drive systems. 相似文献
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Conventional reliability models of belt drive systems in the failure mode of fatigue are mainly based on the static stress strength interference model and its extended models, which cannot consider dynamic factors in the operational duration and be used for further availability analysis. In this paper, time-dependent reliability models, failure rate models and availability models of belt drive systems are developed based on the system dynamic equations with the dynamic stress and the material property degradation taken into account. In the proposed models, dynamic failure dependence and imperfect maintenance are taken into consideration. Furthermore, the issue of time scale inconsistency between system failure rate and system availability is proposed and addressed in the proposed system availability models. Besides, Monte Carlo simulations are carried out to validate the established models. The results from the proposed models and those from the Monte Carlo simulations show a consistency. Furthermore, the case studies show that the failure dependence, imperfect maintenance and the time scale inconsistency have significant influences on system availability. The independence assumption about the belt drive systems results in underestimations of both reliability and availability. Moreover, the neglect of the time scale inconsistency causes the underestimate of the system availability. Meanwhile, these influences show obvious time-dependent characteristics. 相似文献