發(fā)布時間：2018-04-30 07:41

  本文選題：雙鋼輪壓路機 + 動力學建模　； 參考：《上海交通大學》2015年碩士論文

【摘要】：雙鋼輪振動壓路機在振動壓實工作進行時,為達到壓實效果良好,要求振動輪的激振較強;而為保證壓路機司機的身體健康和零部件的使用壽命,又要求壓路機駕駛室與上車的振動越小越好。因而,為在保證高工作效率同時兼顧司機健康與機器壽命,應當尋求合適的壓路機振動系統(tǒng)與駕駛室振動控制解決方案,以降低振動輪激勵源向上車及駕駛室的振動傳遞。本文基于雙鋼輪振動壓路機上車與駕駛室減振的實際工程需要,主要進行的工作和取得的成果如下:1壓路機系統(tǒng)動力學建模與分析。通過壓路機系統(tǒng)的動力學理論建模,使用Matlab建立了駕駛室振動傳遞率與減振器剛度及阻尼之間的隱式數(shù)學關(guān)系。進一步的,通過駕駛室減振器變參數(shù)計算,分析了駕駛室減振器剛度和阻尼對上車架向駕駛室振動傳遞率的影響趨勢,為減振器參數(shù)優(yōu)化提供理論依據(jù)。2駕駛室減振器參數(shù)優(yōu)化。將上車架向駕駛室的振動傳遞率最低作為優(yōu)化的目標函數(shù),已知駕駛室減振器之外的其他減振器剛度和阻尼參數(shù)為約束條件,使用Isight與Matlab聯(lián)合優(yōu)化駕駛室減振器的剛度和阻尼系數(shù)。通過優(yōu)化計算與分析,得出了更優(yōu)的減振器參數(shù)。優(yōu)化結(jié)果表明:為使振動傳遞率最低,減振器剛度應盡量小,前減振器阻尼盡量小,而后減振器阻尼盡量大。3新型摩擦阻尼橡膠減振器開發(fā)。根據(jù)參數(shù)優(yōu)化后得出的減振器參數(shù),結(jié)合壓路機駕駛室實際工況與安裝要求,開發(fā)設計新型摩擦阻尼橡膠減振器,并測試其性能參數(shù)。4用Harmony軟件對壓路機振動系統(tǒng)進行動力學仿真分析。運用公司自主開發(fā)的動力學分析軟件Harmony,對壓路機駕駛室使用原有減振器與新型減振器的減振效果進行了仿真分析,結(jié)果表明:使用優(yōu)化后的減振器,仿真得出的振動傳遞率符合優(yōu)化目標要求,且沖擊響應表現(xiàn)更好。5雙鋼輪壓路機系統(tǒng)振動測試與分析。運用LMS專業(yè)振動測試設備和軟件,對壓路機振動系統(tǒng)進行實車振動測試與分析,驗證并評價優(yōu)化后減振系統(tǒng)的減振效果。
[Abstract]:In order to achieve good compaction effect, vibration wheel excitation is required to ensure the health of the driver and the service life of the parts and components of the roller. Also requires the roller cab and the car vibration as small as possible. Therefore, in order to ensure high working efficiency and give attention to both driver's health and machine life, it is necessary to seek suitable solutions for vibration control of roller vibration system and cab, so as to reduce the vibration transfer between the vibration wheel excitation source and the cab. In this paper, based on the practical engineering requirements of vibration reduction of double steel wheel vibratory roller, the main work and results are as follows: 1: 1 roller system dynamics modeling and analysis. Based on the dynamic model of roller system, the implicit mathematical relationship between cab vibration transfer rate and vibration absorber stiffness and damping is established by using Matlab. Furthermore, by calculating the variable parameters of the cab shock absorber, the influence of the stiffness and damping of the cab shock absorber on the vibration transfer rate from the upper frame to the cab is analyzed. Provide theoretical basis for parameter optimization of shock absorber. 2. Optimize parameters of cab shock absorber. The lowest vibration transfer rate from the upper frame to the cab is taken as the objective function of the optimization, and the stiffness and damping parameters of the vibration absorber other than the cab damper are known as the constraint conditions. Isight and Matlab are used to optimize the stiffness and damping coefficient of cab shock absorber. Through optimization calculation and analysis, the better parameters of shock absorber are obtained. The optimization results show that in order to make the vibration transfer rate lowest, the stiffness of the shock absorber should be as small as possible, the damping of the front damper should be as small as possible, and the damping of the latter should be as large as possible. 3. The development of the new type friction damping rubber shock absorber. According to the parameters of the vibration absorber obtained after parameter optimization, combined with the actual working conditions and installation requirements of the cab of the roller, a new type of friction damping rubber shock absorber was developed and designed. The dynamic simulation analysis of roller vibration system was carried out by using Harmony software. By using the dynamic analysis software Harmony developed by the company, the vibration absorption effect of the original and the new type of vibration absorber in the cab of the roller is simulated and analyzed. The results show that the optimized vibration absorber is used. The vibration transfer rate obtained by simulation meets the requirements of the optimization target, and the impact response is better than that of the vibration test and analysis of the 5. 5 double steel wheel roller system. The vibration test and analysis of the roller vibration system are carried out by using the vibration test equipment and software of LMS specialty, and the vibration absorption effect of the optimized vibration reduction system is verified and evaluated.
【學位授予單位】：上海交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U415.521

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本文編號：1823676