高速传输装置磨损可靠性分析

发布时间：2018-06-22 22:37

本文选题：高速传输装置 + 磨损量预测　；参考：《中北大学》2015年硕士论文

【摘要】：随着工程工业化的发展，高速传输装置在工业中的运用越来越广泛。高速传输装置能够满足工业对传输速率上的要求。但是它存在很多缺点，比如造价昂贵，器械内部磨损严重，故障率高，可靠度低，寿命短等。所以对高速传输装置磨损可靠性的研究尤为重要。本文针对某型号高速传输机构的磨损可靠性开展了下面一系列的工作：首先，通过ANSYS软件对某型号高速传输装置中的齿轮传动机构进行了有限元分析，得到了齿轮的受力分布，以此得出可靠性分析时的薄弱部件。其次，按照均匀设计实验方法，制定磨料硬度、载荷与滑动速度的三因素实验方案。然后运用自制的摩擦磨损实验机进行摩擦磨损实验。得到并分析磨损量与磨损表面形貌等实验数据。得出在实验的条件下磨损的形式主要是磨粒磨损，同时存在少量的粘着磨损。再次，进行磨料硬度、载荷与滑动速度的单因素实验，分析了每个因素对磨损的影响。得出磨损量随硬度的增加而减小，随载荷的增加而增大，随滑动速度的增加而增大，，这三个因素对磨损量均有直接且明显的影响。确定了磨损预测模型需考虑的自变量。然后运用偏最小二乘法对磨损量进行了预测，得到磨损量与硬度、载荷和速度的关系。最后，给出了某高速传输装置中的齿轮传动机构可靠度计算实例。在实例计算中通过虚拟样机仿真软件ADAMS得出其允许最大磨损量，并根据磨损预测模型计算出了相同工作时间的可靠度预测值和不同可靠度时的工作寿命。本文为磨损量的预测提供了理论和实验上的支持，同时对磨损可靠性进行了分析，并给出了计算实例。在允许最大磨损量的确定上，突破以往的方式，采用虚拟样机技术。为磨损可靠性的研究提供了参考。
[Abstract]:With the development of engineering industrialization, high-speed transmission devices are more and more widely used in industry. High-speed transmission device can meet the requirements of industrial transmission rate. However, it has many disadvantages, such as high cost, serious internal wear, high failure rate, low reliability, short life and so on. So it is very important to study the wear reliability of high-speed transmission device. In this paper, the wear reliability of a certain type of high-speed transmission mechanism is studied as follows: firstly, the finite element analysis of gear transmission mechanism in a certain type of high-speed transmission device is carried out by ANSYS software. The force distribution of gear is obtained, and the weak parts in reliability analysis are obtained. Secondly, according to the uniform design method, three factors of abrasive hardness, load and sliding speed are designed. Then the friction and wear experiments were carried out by using a self-made friction and wear tester. The experimental data such as wear amount and wear surface morphology were obtained and analyzed. Under the experimental conditions, the wear form is mainly abrasive wear, and there is a small amount of adhesive wear at the same time. Thirdly, single factor experiments of abrasive hardness, load and sliding speed are carried out, and the influence of each factor on wear is analyzed. It is concluded that the wear rate decreases with the increase of hardness, increases with the increase of load and increases with the increase of sliding speed. These three factors have a direct and obvious effect on the wear rate. The independent variables to be considered in the wear prediction model are determined. Then, the partial least square method is used to predict the wear quantity, and the relationship between wear quantity and hardness, load and velocity is obtained. Finally, an example of calculating the reliability of gear transmission mechanism in a high speed transmission device is given. In the example calculation, the maximum allowable wear quantity is obtained by the virtual prototype simulation software Adams, and the reliability prediction value of the same working time and the working life under different reliability are calculated according to the wear prediction model. This paper provides theoretical and experimental support for the prediction of wear quantity, analyzes the wear reliability and gives an example of calculation. In order to determine the maximum wear quantity, the virtual prototyping technology is adopted to break through the previous way. It provides a reference for the study of wear reliability.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH117

【参考文献】