本文選題：齒輪箱　切入點(diǎn)：模態(tài)貢獻(xiàn)量　出處：《大連理工大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：齒輪箱傳動系統(tǒng)憑借其傳動效率高、承載能力強(qiáng)、傳動比精確、工作可靠、結(jié)構(gòu)緊湊、壽命長等優(yōu)點(diǎn),在現(xiàn)代工業(yè)領(lǐng)域得到了廣泛的應(yīng)用。隨著各行業(yè)的不斷發(fā)展,對齒輪箱傳動系統(tǒng)提出了許多更新、更高的要求,因此,齒輪箱傳動系統(tǒng)在這種推動力的作用下正朝著高速、重載、輕量化、智能化等方向發(fā)展。在這些目標(biāo)的實(shí)現(xiàn)過程中,振動、噪聲問題顯的尤為突出,也是亟待解決的問題。 本文應(yīng)用模態(tài)試驗(yàn)、多體動力學(xué)方法、有限元方法、邊界元方法等手段,以某振動試驗(yàn)臺傳動齒輪箱為研究對象,對其進(jìn)行了激勵力的仿真求解、模態(tài)仿真和試驗(yàn)分析、箱體穩(wěn)態(tài)振動響應(yīng)分析、模態(tài)貢獻(xiàn)量分析、聲學(xué)面板貢獻(xiàn)量分析、基于振速法原理的主要面板聲功率級求解、靈敏度分析,最終通過優(yōu)化方法對齒輪箱箱體的振動、噪聲特性進(jìn)行了優(yōu)化計(jì)算并進(jìn)行了驗(yàn)證。 本文具體工作如下： (1)齒輪對嚙合過程仿真。應(yīng)用Solidworks軟件完成了齒輪箱系統(tǒng)的三維建模,將齒輪對嚙合系統(tǒng)導(dǎo)入到ADAMS軟件中完成多體動力學(xué)建模,進(jìn)行剛性體動力學(xué)分析,獲得了齒輪箱運(yùn)行過程中,軸承部位所受到的動態(tài)載荷； (2)模態(tài)試驗(yàn)與模態(tài)仿真計(jì)算。對齒輪箱箱體的固有振動特性進(jìn)行分析,并在此基礎(chǔ)上利用有限元優(yōu)化方法對箱體有限元模型進(jìn)行了修正,使有限元模型更加符合真實(shí)結(jié)構(gòu)； (3)振動響應(yīng)計(jì)算�；贏NSYS軟件的諧響應(yīng)分析模塊,對齒輪箱箱體的穩(wěn)態(tài)振動響應(yīng)進(jìn)行了求解,并對模態(tài)貢獻(xiàn)量進(jìn)行分析,識別主要貢獻(xiàn)模態(tài)； (4)聲學(xué)仿真計(jì)算。基于LMS Virtual.Lab Acoustics聲學(xué)仿真模塊對箱體各面板聲學(xué)貢獻(xiàn)量進(jìn)行了分析,識別出主要聲學(xué)貢獻(xiàn)面板； (5)振速法聲功率級求解。結(jié)合振速法原理,利用諧響應(yīng)計(jì)算結(jié)果對主要面板的輻射聲功率級進(jìn)行求解作為優(yōu)化目標(biāo)函數(shù),該優(yōu)化目標(biāo)函數(shù)能夠全面兼顧結(jié)構(gòu)振動與噪聲特性； (6)靈敏度分析。應(yīng)用靈敏度原理,對齒輪箱箱體各設(shè)計(jì)變量對目標(biāo)函數(shù)的靈敏度進(jìn)行分析； (7)優(yōu)化求解。應(yīng)用ANSYS軟件的優(yōu)化求解模塊對齒輪箱箱體進(jìn)行優(yōu)化設(shè)計(jì),尋找其最優(yōu)的壁面厚度組合,以達(dá)到減振、降噪的目的,并對結(jié)果驗(yàn)證進(jìn)行驗(yàn)證。
[Abstract]:Gearbox transmission system has been widely used in modern industry with its advantages of high transmission efficiency, strong bearing capacity, accurate transmission ratio, reliable operation, compact structure, long life, etc. With the continuous development of various industries, gearbox transmission system has been widely used in the field of modern industry. Many new and higher requirements have been put forward for the gearbox transmission system. Therefore, the gearbox transmission system is developing in the direction of high speed, heavy load, light weight, intelligence and so on under the action of this kind of driving force. Vibration, noise problems are particularly prominent, is also a problem to be solved. In this paper, modal test, multi-body dynamics method, finite element method, boundary element method and so on are used to study the transmission gearbox of a vibration test rig. The excitation force is solved by simulation, modal simulation and experimental analysis are carried out. Static vibration response analysis, modal contribution analysis, acoustic panel contribution analysis, main panel acoustic power level solution based on the principle of vibration velocity method, sensitivity analysis, and finally the vibration of the gearbox box by optimization method. The noise characteristics are optimized and verified. The specific work of this paper is as follows:. 1) the simulation of gear pair meshing process. The three-dimensional modeling of gear box system is completed by using Solidworks software. The gear pair meshing system is introduced into ADAMS software to complete the multi-body dynamics modeling, and the rigid body dynamics analysis is carried out. The dynamic load on the bearing part during the operation of the gearbox is obtained. (2) Modal test and modal simulation calculation. The inherent vibration characteristics of the gearbox box are analyzed, and the finite element model of the box body is modified by the finite element optimization method to make the finite element model more accord with the real structure. Based on the harmonic response analysis module of ANSYS software, the steady vibration response of the gearbox box is solved, and the modal contribution is analyzed to identify the main contribution modes. (4) Acoustic simulation calculation. Based on LMS Virtual.Lab Acoustics acoustic simulation module, the acoustic contribution of each panel of the box is analyzed, and the main acoustic contribution panel is identified. Combined with the principle of vibration velocity method, the radiative acoustic power level of the main panel is solved as the optimization objective function by using the harmonic response calculation results. The optimization objective function can give full consideration to the vibration and noise characteristics of the structure. Sensitivity analysis. The sensitivity of the design variables of the gearbox box to the objective function is analyzed by using the sensitivity principle. The optimization module of ANSYS software is used to optimize the design of the gearbox box, to find the best combination of wall thickness to achieve the purpose of reducing vibration and noise, and to verify the result.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH132.41

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 楊洋;大功率風(fēng)電增速器性能評價研究[D];大連理工大學(xué);2013年

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本文編號：1627482