【摘要】：隨著我國經(jīng)濟(jì)的發(fā)展，對能源的需求量越來越大以及在緊張的供應(yīng)形勢下，風(fēng)能作為一種重要的新型能源，越來越受重視并且不斷地擴(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)電增速箱傳動系統(tǒng)作為整個風(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)生的動力通過其增速傳遞給發(fā)電機(jī)，因此對風(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，對齒輪箱在正常運(yùn)轉(zhuǎn)的狀態(tài)下產(chǎn)生的振動和噪聲具有很大的影響，因此研究風(fēng)電齒輪箱的振動特性及噪聲問題顯得尤為重要。 本課題來源于國家科技支撐計劃項(xiàng)目，以大功率分流式風(fēng)電增速齒輪箱為研究對象，采用有限元分析方法，研究在內(nèi)部動態(tài)激勵下齒輪箱的動態(tài)特性及結(jié)構(gòu)噪聲問題。本文研究的相關(guān)內(nèi)容如下： ①建立了兩級行星輪加一級平行軸風(fēng)電增速齒輪箱三維實(shí)體模型和耦合有限元模型，計算整個系統(tǒng)的傳動比和實(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，計算了包含時變剛度激勵、誤差激勵和嚙入沖擊激勵在工況下的直齒輪和斜齒輪嚙合齒輪副的內(nèi)部動態(tài)激勵。 ③在ABAQUS有限元分析模塊中，，采用Lanczos方法對風(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)部動態(tài)激勵作用下，采用振型疊加法對風(fēng)電齒輪箱的動態(tài)響應(yīng)進(jìn)行有限元數(shù)值求解，得到相應(yīng)的位移、速度和加速度振動時域特性曲線，然后經(jīng)過快速傅里葉變換（FFT）得到各自的頻響曲線，并進(jìn)行齒輪箱振動烈度評價。 ⑤在加速度頻響曲線的基礎(chǔ)上，根據(jù)加速度級1/3倍頻程原理計算分析齒輪箱的結(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)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM614

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