【摘要】：隨著我國(guó)經(jīng)濟(jì)的發(fā)展，對(duì)能源的需求量越來(lái)越大以及在緊張的供應(yīng)形勢(shì)下，風(fēng)能作為一種重要的新型能源，越來(lái)越受重視并且不斷地?cái)U(kuò)大其應(yīng)用范圍，從而不斷地觸發(fā)了風(fēng)力發(fā)電技術(shù)快速地往前發(fā)展。風(fēng)電增速箱傳動(dòng)系統(tǒng)作為整個(gè)風(fēng)力發(fā)電裝備的核心組成部件之一，主要功能是在風(fēng)載作用下風(fēng)葉產(chǎn)生的動(dòng)力通過(guò)其增速傳遞給發(fā)電機(jī)，因此對(duì)風(fēng)電增速箱系統(tǒng)的可靠性和穩(wěn)定性提出了很高的要求。 風(fēng)電齒輪箱正朝著大功率方向發(fā)展，在高速、重載以及惡劣的環(huán)境下運(yùn)行，對(duì)齒輪箱在正常運(yùn)轉(zhuǎn)的狀態(tài)下產(chǎn)生的振動(dòng)和噪聲具有很大的影響，因此研究風(fēng)電齒輪箱的振動(dòng)特性及噪聲問(wèn)題顯得尤為重要。 本課題來(lái)源于國(guó)家科技支撐計(jì)劃項(xiàng)目，以大功率分流式風(fēng)電增速齒輪箱為研究對(duì)象，采用有限元分析方法，研究在內(nèi)部動(dòng)態(tài)激勵(lì)下齒輪箱的動(dòng)態(tài)特性及結(jié)構(gòu)噪聲問(wèn)題。本文研究的相關(guān)內(nèi)容如下： ①建立了兩級(jí)行星輪加一級(jí)平行軸風(fēng)電增速齒輪箱三維實(shí)體模型和耦合有限元模型，計(jì)算整個(gè)系統(tǒng)的傳動(dòng)比和實(shí)際載荷作用下的軸承支撐剛度。 ②采用matlab軟件編程和有限元模擬仿真的方法，計(jì)算了包含時(shí)變剛度激勵(lì)、誤差激勵(lì)和嚙入沖擊激勵(lì)在工況下的直齒輪和斜齒輪嚙合齒輪副的內(nèi)部動(dòng)態(tài)激勵(lì)。 ③在ABAQUS有限元分析模塊中，，采用Lanczos方法對(duì)風(fēng)電增速箱系統(tǒng)和箱體進(jìn)行固有特性分析，提取其前20階固有頻率和固有振型。 ④考慮內(nèi)部動(dòng)態(tài)激勵(lì)作用下，采用振型疊加法對(duì)風(fēng)電齒輪箱的動(dòng)態(tài)響應(yīng)進(jìn)行有限元數(shù)值求解，得到相應(yīng)的位移、速度和加速度振動(dòng)時(shí)域特性曲線，然后經(jīng)過(guò)快速傅里葉變換（FFT）得到各自的頻響曲線，并進(jìn)行齒輪箱振動(dòng)烈度評(píng)價(jià)。 ⑤在加速度頻響曲線的基礎(chǔ)上，根據(jù)加速度級(jí)1/3倍頻程原理計(jì)算分析齒輪箱的結(jié)構(gòu)噪聲值。
[Abstract]:With the development of China's economy, the demand for energy is increasing, and under the tight supply situation, wind energy, as an important new type of energy, has been paid more and more attention and its application scope has been continuously expanded. As a result, the rapid development of wind power generation technology has been triggered. As one of the core components of the whole wind power generation equipment, the main function of the wind power growth box transmission system is to transfer the power generated by the wind blade to the generator through its growth rate under the action of the wind load. Therefore, the reliability and stability of wind power booster system is required. The wind-electric gear box is developing towards high power, running in high-speed, heavy-duty and bad environment, which has a great influence on the vibration and noise of the gearbox under the normal operation condition. Therefore, it is very important to study the vibration characteristics and noise of wind-electric gear box. This subject comes from the national science and technology support project. The dynamic characteristics and structural noise of the gearbox under the internal dynamic excitation are studied by using the finite element analysis method, taking the gearbox of high-power and split-flow wind power as the research object. The main contents of this paper are as follows: (1) the three-dimensional solid model and coupling finite element model of two-stage planetary wheel plus one-stage parallel axis wind power growth gearbox are established. The transmission ratio of the whole system and the bearing support stiffness under actual load are calculated. (2) the internal dynamic excitation of spur gear and helical gear meshing pair including time-varying stiffness excitation, error excitation and meshing impact excitation is calculated by means of matlab software programming and finite element simulation. 3 in the ABAQUS finite element analysis module, the Lanczos method is used to analyze the inherent characteristics of the wind power increasing box system and the box body, and the first 20 order natural frequencies and natural vibration modes are extracted. (4) considering the internal dynamic excitation, the dynamic response of wind power gearbox is numerically solved by means of mode superposition method, and the corresponding time domain characteristic curves of displacement, velocity and acceleration are obtained. Then the frequency response curves are obtained by fast Fourier transform (FFT), and the vibration intensity of gearbox is evaluated. 5 on the basis of acceleration frequency response curve, the structural noise value of gear box is calculated and analyzed according to the principle of acceleration level 1 / 3 octave.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM614

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