本文關(guān)鍵詞：齒輪系統(tǒng)中的動(dòng)態(tài)強(qiáng)度及變剛度仿真　出處：《電子科技大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

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【摘要】：隨著科技的快速發(fā)展,特別是近幾十年來,機(jī)械工業(yè)發(fā)生著日新月異的變化,其應(yīng)用也越來越廣泛,從傳統(tǒng)的機(jī)床車輛等機(jī)械工程應(yīng)用領(lǐng)域到如今的航天航空機(jī)器人等高精尖領(lǐng)域,人們對(duì)機(jī)械系統(tǒng)的要求也在不斷變化,對(duì)其應(yīng)用要求也越來越高。而齒輪傳動(dòng)系統(tǒng)作為機(jī)械工程中應(yīng)用最為廣泛的傳動(dòng)零件之一,因其功率范圍大、傳動(dòng)效率高、傳動(dòng)比準(zhǔn)確等特點(diǎn),其應(yīng)用范圍也越來越廣,人們對(duì)其要求也越來越高。特別是在高速重載以及高精密傳動(dòng)的環(huán)境下,要求傳動(dòng)系統(tǒng)能夠承受沖擊載荷以及保證傳動(dòng)的準(zhǔn)確性。在這種情況下,工作環(huán)境對(duì)于齒輪的機(jī)械屬性,特別是零件的強(qiáng)度及系統(tǒng)的剛度更是有著極高的要求,更是要求人們深入地分析傳動(dòng)系統(tǒng)的動(dòng)態(tài)強(qiáng)度及系統(tǒng)的剛度變化情況,以保證其零件傳動(dòng)的平穩(wěn)及可靠性。 本論文對(duì)目前齒輪的國(guó)內(nèi)外發(fā)展及研究現(xiàn)狀進(jìn)行了深入的調(diào)查研究,在目前計(jì)算機(jī)仿真技術(shù)發(fā)展水平的基礎(chǔ)上,分析研究當(dāng)前齒輪傳動(dòng)系統(tǒng)中的強(qiáng)度校核以及傳動(dòng)系統(tǒng)的剛度,并利用仿真手段,對(duì)齒輪的零件強(qiáng)度以及系統(tǒng)的剛度進(jìn)行分析研究,其研究?jī)?nèi)容主要有: 1.對(duì)當(dāng)前的基于柔性多體系統(tǒng)動(dòng)力學(xué)的剛?cè)峄旌象w的混合仿真方法進(jìn)行了深入的研究,對(duì)其仿真過程中的不足提出改進(jìn),特別是針對(duì)不同仿真軟件之間的網(wǎng)格節(jié)點(diǎn)映射問題、時(shí)變載荷文件的提取及其在有限元模型中的自動(dòng)施加,以及求解過程的控制,簡(jiǎn)化了以往的混合仿真方法,提高了仿真計(jì)算的效率; 2.對(duì)于傳統(tǒng)的靜態(tài)齒輪強(qiáng)度校核進(jìn)行了研究,并對(duì)動(dòng)態(tài)工況下齒輪的動(dòng)態(tài)強(qiáng)度進(jìn)行了深入分析,根據(jù)改進(jìn)的混合仿真方法對(duì)齒輪的動(dòng)態(tài)強(qiáng)度進(jìn)行校核,對(duì)齒輪的靜強(qiáng)度校核及動(dòng)態(tài)強(qiáng)度校核結(jié)果進(jìn)行分析比較; 3.齒輪系統(tǒng)的變剛度理論分析研究,并利用有限元仿真方法對(duì)某型號(hào)的行星伺服減速器進(jìn)行剛度分析,得出其系統(tǒng)的剛度變化情況,并利用行星伺服減速器的測(cè)試設(shè)備對(duì)仿真結(jié)果進(jìn)行驗(yàn)證,得出其剛度變化趨勢(shì)的一致性。
[Abstract]:With the rapid development of science and technology, especially in recent decades, the mechanical industry is changing with each passing day, and its application is more and more extensive. From the traditional mechanical engineering fields such as machine tools and vehicles to the advanced fields such as aerospace robots and so on, the requirements of mechanical systems are constantly changing. As one of the most widely used transmission parts in mechanical engineering, gear transmission system has the characteristics of large power range, high transmission efficiency, accurate transmission ratio and so on. The scope of its application is more and more extensive, and people demand it more and more, especially in the environment of high speed and heavy load and high precision transmission. It is required that the transmission system can withstand the impact load and ensure the accuracy of the transmission. In this case, the working environment has a very high requirement for the mechanical properties of the gear, especially the strength of the parts and the stiffness of the system. It is also necessary to analyze the dynamic strength and stiffness of the transmission system in order to ensure the stability and reliability of its parts. In this paper, the development of gears at home and abroad and the status quo of research have been deeply investigated and studied, on the basis of the development level of computer simulation technology. This paper analyzes and studies the strength check and the stiffness of the gear transmission system, and analyzes the strength of the gear parts and the stiffness of the system by means of simulation. The main research contents are as follows: 1. The current hybrid simulation method of rigid and flexible hybrid system based on flexible multi-body system dynamics is deeply studied, and the shortcomings in the simulation process are improved. Especially for the grid node mapping problem between different simulation software, the extraction of time-varying load file and its automatic application in the finite element model, as well as the control of the solution process, the previous hybrid simulation methods are simplified. The efficiency of simulation calculation is improved. 2. The traditional static gear strength checking is studied, and the dynamic strength of the gear under the dynamic condition is deeply analyzed, and the dynamic strength of the gear is checked according to the improved hybrid simulation method. The results of static strength check and dynamic strength check of gears are analyzed and compared. 3. The variable stiffness theory of gear system is analyzed, and the stiffness of a certain type of planetary servo reducer is analyzed by finite element simulation method, and the stiffness change of the gear system is obtained. The simulation results are verified by using the testing equipment of planetary servo reducer, and the consistency of stiffness variation trend is obtained.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH132.41

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