關(guān)節(jié)軸承襯墊試驗(yàn)機(jī)的局部加熱技術(shù)研究
[Abstract]:The joint bearing liner test machine plays an important role in the performance test of joint bearing liner. The environmental temperature of the gasket simulated by the testing machine has a direct impact on the evaluation of the performance of the gasket. At present, the application of ambient temperature in domestic and foreign testing machine is mostly the traditional integral heating, and the non-test part of the testing machine is also heated by this heating method in the course of the test. Therefore, the test results of testing machine and evaluating the performance of gasket have a bad effect, and the efficiency is low and the temperature rise is slow. In order to eliminate the adverse effect of temperature rise on the test machine and test results, and to improve the efficiency of temperature rise in the test, a local heating device is designed and manufactured in this paper. The main research contents are as follows: the theoretical basis for the calculation of the temperature field is introduced, the heat transfer process model of the heat transfer shaft is established, and the basic equation of the local heating temperature field of the heat transfer shaft is obtained. The heat source loading temperature which the heat transfer shaft reaches the set temperature is solved by numerical method. The distribution of temperature field after heat transfer axis loading is simulated by finite element analysis software. The theoretical calculation results of temperature field are verified and the temperature difference of the test area is obtained. And the corresponding relationship between the temperature measurement zone and the test area on the heat transfer shaft. Based on the heat transfer theory and electromagnetic induction theory, two kinds of local heating devices, silicone rubber heating sheet and inductive heating, were designed for joint bearing liner testing machine. The selection of silicone rubber heating sheet and the design of temperature control system are mainly carried out in the local heating device of silicone rubber, and the electromagnetic inductor and the temperature control system are designed in the induction heating local heating device. The local heating temperature test was carried out by using the joint bearing liner tester. The temperature data of the heat transfer shaft at certain temperature were obtained and compared with the simulated data. The accuracy of the simulated temperature field distribution and the correctness of the theoretical calculation formula are verified, and the temperature variation curves of the temperature measurement zone and the test area of the heat transfer axis are analyzed and compared with the results of the finite element analysis. The accuracy of the relationship between the temperature measurement area and the test area is verified, and the feasibility of indirect temperature measurement with the local heating device is obtained.
【學(xué)位授予單位】:燕山大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:TH87
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