【作者】 韩冰；

【导师】 孔祥伟；

【作者基本信息】 东北大学 ， 机械设计及理论， 2010， 硕士

【摘要】 轧辊磨损是轧制过程中难以精确控制的因素之一,至今尚无一个精确的理论模型可以对轧辊磨损进行预报计算。为了研究轧辊磨损,国内外研究人员设计开发了各种摩擦磨损试验机,但是工作条件与实际轧制工况存在着较大的差异,所得到的试验数据并不能为轧辊磨损研究提供充分的参考依据。为了能更真实地模拟轧制过程中带钢与轧辊的摩擦磨损行为,并为轧辊磨损研究以及轧辊材料的实际应用提供有力的参考依据,本文设计开发了RollsFW240型摩擦磨损试验机。为了对RollsFW240型摩擦磨损试验机的系统结构和工作性能进行研究和分析,本文首先根据该型试验机的功能以及主要技术参数,简要阐述了整个试验机的设计过程,包括试验机的总体结构设计、系统组成以及系统建模。然后利用有限元方法对该型试验机的关键零部件进行了结构静力分析和振动分析,从而验证了相关零部件的强度、刚度等性能满足设计要求。之后又利用UG、ADAMS与ANSYS三种软件的接口技术建立了传动系统的刚柔耦合模型,并对该模型进行了动力学仿真以及振动特性分析,从而得到了实际工况下柔性传动轴的应力、应变状态以及传动系统的运行状态。最后应用ANSYS软件中的物理环境法对试验圆盘的电磁热耦合感应加热过程进行了有限元数值模拟与分析,得到了试验圆盘的温度分布状况以及温度随时间变化的规律,并验证了感应加热方式可以满足试验圆盘表面高温加热的设计要求。此外,还模拟分析了电源频率、电流密度等参数对试验圆盘感应加热温度控制的影响,从而得到了试验圆盘温度控制以及感应加热装置优化设计的理论依据。通过对RollsFW240型摩擦磨损试验机的系统建模、有限元分析和动力学仿真结果的综合分析,表明该型试验机已具备了模拟实际工况下带钢与轧辊摩擦磨损行为的试验功能,并满足主要技术参数的设计要求,同时分析结果也为该型试验机的系统结构优化设计和技术参数选择提供了有利的理论指导和技术支持。此外,该型试验机的虚拟设计方法和仿真分析手段对同类型摩擦磨损试验机的设计开发也有一定的参考作用。更多还原

【Abstract】 Roll wear is one of the factors that are difficult to be controlled accurately in the rolling process, and there is no suitable theoretical model can predict the calculation of roll wear till now. To study roll wear, domestic and international researchers designed a variety of friction and wear testing machines, but there are large differences between the working conditions and the rolling conditions, and the experimental data can not provide adequate reference for roll wear research. For simulating roll friction and wear behavior more realistically than other testing machines in the rolling process, and providing a powerful reference for roll wear research and practical application of roll materials, RollsFW240friction and wear testing machine was designed in this paper.For studying and analyzing system structure and work performance of RollsFW240friction and wear testing machine, firstly, according to the functions and main technical parameters of this testing machine, described the design process including general structural design, system composition and system modeling briefly. Secondly, structure static analysis and vibration analysis for the key parts of this testing machine were completed by FEM, and then the strength and stiffness properties of the relevant parts meeting the design requirements were verified. Thirdly, the rigid-flexible coupling model of transmission system was created by making use of the interface technology of UG, ADAMS and ANSYS, then its dynamic simulation and vibration analysis were preceded, thereby the stress and strain state of flexible shaft and the working state of transmission system under the actual conditions were obtained. Finally, electromagnetic-thermal coupling induction heating process of the test disk was simulated and analyzed by making use of ANSYS software’s physics environment method, the temperature distribution and its variation with time were obtained, and induction heating method meeting the design requirements of the test disk surface high-temperature heating was verified. In addition, the effect of induction heating including the variation of power frequency, current intensity on the test disk temperature control was analyzed, thereby the theoretical foundation for temperature control of the test disk and optimization design of the induction heating device were offered.The results of system modeling, finite element analysis and dynamic simulation were analyzed, thereby the experiment functions of this testing machine to simulate the strip rolling friction under the actual conditions were proved, and the design requirements of main technical parameters were satisfied, while the favorable theoretical guidance and technical support for system structure optimization design and technical parameters selection were provided. In addition, the virtual design and simulation analysis methods of this testing machine can provide certain reference for the same type of friction and wear testing machine design.更多还原