高性能托轮的选材及其热力学分析

发布时间：2018-05-23 20:09

  本文选题：托轮 + ANSYS　； 参考：《北京化工大学》2012年硕士论文

【摘要】：托轮作为回转体的支撑部件,最早在矿山、水泥厂等行业中得到了广泛应用。近年来,随着钢丝绳厂、电线电缆厂和光缆厂等行业的兴盛,托轮行业又迎来了春天。但是由于受到托轮材料的限制,托轮的使用寿命相对比较短暂,这已经成为了托轮行业发展的瓶颈。因此,本论文主要针对最新研制的高性能托轮材料,进行了力学性能测试和相关性能的计算,并对材料进行了性能比较,做出了最佳材料的选择。 利用双螺杆反应挤出机制备四种配方的力学测试试样,通过万能试验台得到了四种配方、胶木和国外样品的压缩应力应变曲线。结果发现新研制的四种配方的弹性模量在3500MPa和5000MPa之间,比样品及胶木的弹性模量都要高,完全符合对高性能托轮材料的力学性能要求。 通过有限元软件ANSYS对六种试样制作的托轮进行受力分析,得到了托轮在受载过程中的位移变形量和塑性变形能量。在实际工作过程中托轮要受到反复的挤压,塑性变形能量转化为热量,成为托轮内部温度升高的主要因素。利用热力学分析的知识,推导出了托轮在工作过程中的温度场分布,并且得到了六种材料的热交换平衡时内部的最大温度值和其出现的位置。结果发现材料3的最大温度值为110.5℃,是六种材料中最小的,材料3的最大温度值位置是最靠近托轮外缘面的。另外经过研究发现转速、载荷与最大温度近似呈正比例关系。 根据对不同材料的力学性能测试数据和最大温度值及其位置的计算数据的分析比较,得出了材料3即配方2作为制作托轮的最佳材料的选择。
[Abstract]:As the supporting part of rotary body, the supporting wheel is widely used in mines, cement factories and other industries. In recent years, with the rise of wire rope factory, wire cable factory and optical cable factory, the industry of supporting wheel has ushered in spring. However, due to the constraints of the wheel materials, the service life of the wheel is relatively short, which has become the bottleneck of the development of the wheel industry. Therefore, this paper mainly aimed at the newly developed high performance supporting wheel material, has carried on the mechanical property test and the correlation performance calculation, and has carried on the performance comparison to the material, has made the best material choice. The mechanical test samples of four formulations were prepared by a twin-screw reaction extruder. The compression stress-strain curves of four formulations, Bakelite and foreign samples, were obtained by the universal test rig. The results show that the elastic modulus of the four new formulations is between 3500MPa and 5000MPa, which is higher than that of the samples and Bakelite. The displacement deformation and plastic deformation energy of the bearing wheel are obtained by the finite element software ANSYS. In the process of practical work, the roller is subjected to repeated extrusion, and the plastic deformation energy is converted into heat, which becomes the main factor of the increase of the internal temperature of the roller. Using the knowledge of thermodynamic analysis, the temperature field distribution of the roller in the working process is deduced, and the maximum temperature value and the position of its appearance in the heat exchange equilibrium of six kinds of materials are obtained. The results show that the maximum temperature of material 3 is 110.5 鈩，

本文编号：1926157