本文選題：傳動軸 + 膜盤聯(lián)軸器　； 參考：《湖南大學(xué)》2012年碩士論文

【摘要】：本課題對現(xiàn)代工業(yè)用傳動軸的振動特性及提高疲勞性能技術(shù)進(jìn)行了分析和研究。針對某膜盤式傳動軸工作轉(zhuǎn)速高,承受載荷大的特點(diǎn),首先利用有限元法對膜盤聯(lián)軸器傳動軸在不同型面厚度下的傳動軸的剛度、固有頻率及臨界轉(zhuǎn)速進(jìn)行計算分析并與樣件進(jìn)行對比分析,計算分析不同型面厚度的膜盤聯(lián)軸器在工作載荷下的應(yīng)力情況,明確膜盤聯(lián)軸器型面厚度的最佳設(shè)計方案。 按此方案加工的試驗件進(jìn)行了傳動軸膜盤應(yīng)力試驗,測試了三種載荷狀態(tài)下的膜盤應(yīng)力情況,并與有限元應(yīng)力計算相比較,驗證計算的準(zhǔn)確性。傳動軸還進(jìn)行了高周疲勞試驗以驗證其疲勞性能,第一件的高周疲勞試驗結(jié)果不理想,膜盤聯(lián)軸器出現(xiàn)了過早失效,疲勞強(qiáng)度無法滿足設(shè)計要求,經(jīng)分析后認(rèn)為此次試驗?zāi)けP聯(lián)軸器過早失效與膜盤型面厚度沒有關(guān)系,而是與膜盤聯(lián)軸器材料晶粒度及表面加工質(zhì)量有關(guān),根據(jù)分析結(jié)果,第二、三件高周疲勞試驗件在第一件的基礎(chǔ)上提高了膜盤聯(lián)軸器的材料晶粒度并提高了表面加工質(zhì)量,避免出現(xiàn)刀痕等,改進(jìn)后的傳動軸高周疲勞試驗件通過了試驗考核,其膜盤聯(lián)軸器疲勞強(qiáng)度滿足設(shè)計要求,通過對三次傳動軸高周疲勞試驗進(jìn)行比較分析,明確了影響傳動軸膜盤聯(lián)軸器疲勞強(qiáng)度的因素,并確定提高其疲勞強(qiáng)度的措施。 通過這些研究,摸清了這類高速轉(zhuǎn)子的振動特性,驗證了膜盤聯(lián)軸器型面優(yōu)化設(shè)計方法及影響膜盤聯(lián)軸器疲勞性能的因素,驗證了動力學(xué)設(shè)計軟件的準(zhǔn)確性,對后續(xù)進(jìn)行傳動軸膜盤聯(lián)軸器的抗疲勞設(shè)計技術(shù)研究提供了理論基礎(chǔ)。
[Abstract]:In this paper, the vibration characteristics of modern industrial transmission shaft and the technique of improving fatigue performance are analyzed and studied. In view of the characteristics of a film disk drive shaft with high rotational speed and large load, the stiffness of the drive shaft of the membrane disk coupling under different thickness is firstly analyzed by using finite element method (FEM). The natural frequency and critical rotational speed are calculated and analyzed, and compared with the sample, the stress of the film disk coupling with different thickness is calculated and analyzed under the working load, and the optimum design scheme of the thickness of the film disk coupling is determined. The plate stress of the transmission shaft was tested and compared with the finite element method to verify the accuracy of the calculation. High cycle fatigue test was also carried out to verify the fatigue performance of the drive shaft. The results of the first high cycle fatigue test were not satisfactory, the membrane disk coupling appeared premature failure, and the fatigue strength could not meet the design requirements. After analysis, it is concluded that the premature failure of the membrane disk coupling is not related to the thickness of the film disk surface, but to the grain size of the film disk coupling material and the surface processing quality. According to the analysis results, the second, On the basis of the first part, the three high cycle fatigue test pieces have improved the grain size of the material and the surface processing quality of the film disk coupling, and avoided the appearance of knife marks. The improved high cycle fatigue test piece of the transmission shaft has passed the test examination. The fatigue strength of the membrane disk coupling meets the design requirements. By comparing and analyzing the high cycle fatigue tests of the three drive shafts, the factors influencing the fatigue strength of the drive shaft membrane disk couplings are clarified, and the measures to improve the fatigue strength are determined. Through these studies, the vibration characteristics of this kind of high speed rotor are found out, the optimum design method of the membrane disk coupling profile and the factors influencing the fatigue performance of the membrane disk coupling are verified, and the accuracy of the dynamic design software is verified. It provides a theoretical basis for the subsequent research on the fatigue resistance design technology of the drive shaft membrane disk coupling.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH133.2;TH113.1

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 種海鋒;何欽象;祖磊;;基于ANSYS的纖維纏繞復(fù)合材料傳動軸的優(yōu)化[J];玻璃鋼/復(fù)合材料;2015年03期

相關(guān)碩士學(xué)位論文 前2條

1 尤文;基于計算機(jī)模擬仿真的聯(lián)軸器—轉(zhuǎn)子系統(tǒng)力學(xué)特性研究[D];上海師范大學(xué);2016年

2 董延陽;航空發(fā)動機(jī)盤鼓式轉(zhuǎn)子振動引起的疲勞問題研究[D];哈爾濱工業(yè)大學(xué);2015年

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本文編號：1889294