本文選題：有限元分析 + 接觸��； 參考：《東北大學(xué)》2012年碩士論文

【摘要】：齒輪系統(tǒng)是機(jī)械系統(tǒng)的重要組成部分,其工作性能對(duì)整個(gè)系統(tǒng)有著至關(guān)重要的影響。隨著速度和功率的提高,齒輪傳動(dòng)正朝著高速、重載方向發(fā)展。其動(dòng)力學(xué)行為的研究便成為國(guó)內(nèi)外學(xué)者所關(guān)注的課題。 本文以一對(duì)斜齒輪傳動(dòng)系統(tǒng)為研究對(duì)象,運(yùn)用非線性接觸有限元法進(jìn)行了靜態(tài)接觸分析。然后結(jié)合齒輪齒向修形理論,提出斜齒輪的齒向修形(鼓形修整)的方案,并通過(guò)仿真對(duì)修形的效果進(jìn)行了驗(yàn)證。最后應(yīng)用ADAMS對(duì)其進(jìn)行了動(dòng)力學(xué)分析。 首先,根據(jù)漸開(kāi)線齒輪嚙合原理得到漸開(kāi)線方程、齒根過(guò)渡曲線方程及螺旋線方程,以此為基礎(chǔ)在PRO/E中進(jìn)行斜齒輪的三維建模。 其次,將齒輪傳動(dòng)模型導(dǎo)入ANSYS中進(jìn)行接觸有限元分析,通過(guò)與經(jīng)典赫茲接觸應(yīng)力結(jié)果的比較,驗(yàn)證ANSYS中進(jìn)行非線性接觸分析的有效性。 然后,應(yīng)用齒輪鼓形修整原理和方法,根據(jù)軸心的彎曲變形和齒輪的扭轉(zhuǎn)變形,得出齒輪鼓形修整所需的參數(shù),并在PRO/E中對(duì)齒輪進(jìn)行修形；將修形后的齒輪傳動(dòng)模型進(jìn)行非線性接觸分析,并通過(guò)與未修形的分析結(jié)果進(jìn)行對(duì)比,驗(yàn)證修形方案的可行性。 最后,基于振動(dòng)理論,建立齒輪傳動(dòng)系統(tǒng)動(dòng)力學(xué)模型的數(shù)學(xué)方程;研究了齒輪系統(tǒng)振動(dòng)和噪聲的產(chǎn)生機(jī)理,將引起齒輪振動(dòng)噪聲的內(nèi)部原因歸結(jié)為三種激勵(lì),即剛度激勵(lì)、誤差激勵(lì)和嚙合沖擊激勵(lì),并對(duì)它們進(jìn)行數(shù)值模擬；將齒輪傳動(dòng)模型導(dǎo)入ADAMS進(jìn)行動(dòng)力響應(yīng)分析。
[Abstract]:Gear system is an important part of mechanical system, its working performance has a vital impact on the whole system. With the increase of speed and power, gear transmission is developing towards high speed and heavy load. The study of its dynamic behavior has become a topic concerned by scholars at home and abroad. In this paper, the static contact analysis of a pair of helical gear transmission system is carried out by nonlinear contact finite element method. Based on the theory of gear tooth modification, the scheme of tooth modification (drum dressing) of helical gear is put forward, and the effect of modification is verified by simulation. At last, ADAMS is used to analyze its dynamics. Firstly, according to the meshing principle of involute gear, the involute equation, tooth root transition curve equation and helix equation are obtained. Based on this, the three-dimensional modeling of helical gear is carried out in PRO/E. Secondly, the gear transmission model is introduced into ANSYS for contact finite element analysis, and the effectiveness of nonlinear contact analysis in ANSYS is verified by comparing the results of contact stress with classical Hertz contact stress. Then, by applying the principle and method of gear drum dressing, according to the bending deformation of axis center and the torsional deformation of gear, the parameters needed for gear drum dressing are obtained, and the gear shape is modified in PRO/E. The nonlinear contact analysis of the modified gear transmission model is carried out, and the feasibility of the modification scheme is verified by comparing the results with the results of the unmodified gear transmission model. Finally, based on the vibration theory, the mathematical equations of the dynamic model of the gear transmission system are established, and the generating mechanism of the vibration and noise of the gear system is studied. The internal causes of the vibration and noise of the gear system are reduced to three kinds of excitation, that is, the stiffness excitation. Error excitation and meshing shock excitation are numerically simulated, and the gear transmission model is introduced into ADAMS for dynamic response analysis.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH132.41

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