本文選題：渦輪增壓器 + 離心壓氣機(jī)葉輪　； 參考：《大連理工大學(xué)》2011年碩士論文

【摘要】：本文主要進(jìn)行了渦輪增壓器壓氣機(jī)葉輪的振動模態(tài)分析,并且對壓氣機(jī)葉輪進(jìn)行了相應(yīng)的優(yōu)化設(shè)計分析。 在實(shí)際的工作過程中,應(yīng)該使葉輪能夠長期的工作在非共振的環(huán)境中,因此有必要對葉輪進(jìn)行振動模態(tài)分析。通過分析得到葉輪的固有頻率,進(jìn)而避免葉輪的固有頻率和激振力頻率相同或相近,避免共振現(xiàn)象的發(fā)生。 本文利用CAD軟件Pro/ENGINEER對船用渦輪增壓器的壓氣機(jī)葉輪進(jìn)行了三維實(shí)體建模,并利用有限元分析軟件ANSYS對葉輪進(jìn)行了不同轉(zhuǎn)速下的模態(tài)分析,得到了不同轉(zhuǎn)速下壓氣機(jī)葉輪的固有頻率及相應(yīng)的振型。其中對于非零轉(zhuǎn)速,在其旋轉(zhuǎn)時必然會產(chǎn)生相應(yīng)的離心力。因此對于非零轉(zhuǎn)速的情況,本文首先分析出相應(yīng)的預(yù)應(yīng)力,然后分析了在預(yù)應(yīng)力的影響下,葉輪在相應(yīng)轉(zhuǎn)速下的前十階固有頻率。通過分析,可以得出葉輪共振時的激振頻率和轉(zhuǎn)速。最后,論文以葉片數(shù)目為目標(biāo),對葉輪進(jìn)行了優(yōu)化設(shè)計,優(yōu)化結(jié)果使葉輪避免了共振的發(fā)生。 本文對葉輪振動進(jìn)行了分析和優(yōu)化,對實(shí)際的工程具有較大的現(xiàn)實(shí)意義,同時對其它葉輪機(jī)械旋轉(zhuǎn)部件的振動研究也有參考價值。
[Abstract]:In this paper, the vibration modal analysis of the compressor impeller of turbocharger is carried out, and the corresponding optimization design analysis of the compressor impeller is carried out. In the actual working process, the impeller should be able to work in a non-resonant environment for a long time, so it is necessary to carry out vibration modal analysis of the impeller. By analyzing the natural frequency of impeller, the inherent frequency and exciting force frequency of impeller are avoided, and the phenomenon of resonance is avoided. In this paper, the 3D solid modeling of the compressor impeller of marine turbocharger is carried out by using the CAD software Prop / engineer, and the modal analysis of the impeller at different rotational speeds is carried out by using the finite element analysis software ANSYS. The natural frequencies and corresponding modes of compressor impeller are obtained at different speeds. For non-zero rotational speed, the centrifugal force will be produced when it rotates. Therefore, for the case of non-zero rotational speed, the corresponding prestressing force is first analyzed, and then the first ten natural frequencies of impeller under the influence of prestress are analyzed. Through analysis, the exciting frequency and rotational speed of impeller resonance can be obtained. Finally, the optimal design of impeller is carried out with the aim of the number of blades, and the results of optimization make the impeller avoid resonance. In this paper, the vibration of impeller is analyzed and optimized, which is of great practical significance to practical engineering, and also has reference value to the vibration research of other rotating parts of impeller machinery.
【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】：2011
【分類號】：TH452

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 石永強(qiáng);王維民;寧喜;郝開元;;離心壓縮機(jī)葉輪振動特性仿真及試驗(yàn)研究[J];風(fēng)機(jī)技術(shù);2012年05期

相關(guān)碩士學(xué)位論文 前4條

1 趙亞平;吹吸機(jī)設(shè)計分析研究[D];蘇州大學(xué);2012年

2 郝開元;基于結(jié)構(gòu)適應(yīng)的離心壓縮機(jī)自愈調(diào)控方法研究[D];北京化工大學(xué);2012年

3 石永強(qiáng);工業(yè)燃?xì)廨啓C(jī)狀態(tài)監(jiān)測與故障診斷方法研究[D];北京化工大學(xué);2012年

4 李文飛;電動四輪割草機(jī)設(shè)計與研究[D];蘇州大學(xué);2012年

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本文編號：2052684