本文選題：裂紋轉(zhuǎn)子 + 非線性頻譜��； 參考：《機(jī)械強(qiáng)度》2017年06期

【摘要】：建立了裂紋轉(zhuǎn)子非線性逼近模型,論述了非線性輸出頻域響應(yīng)函數(shù)(NOFRF)及其非線性頻譜分析理論,基于該理論對(duì)裂紋轉(zhuǎn)子系統(tǒng)的各階NOFRF進(jìn)行了仿真分析,該分析結(jié)果說明了裂紋轉(zhuǎn)子系統(tǒng)新頻域成份是如何產(chǎn)生的,對(duì)裂紋轉(zhuǎn)子的超諧波成份和亞共振現(xiàn)象進(jìn)行了解釋,并進(jìn)行了試驗(yàn)分析,結(jié)果表明了高階NOFRF比一階對(duì)轉(zhuǎn)子裂紋深度更敏感,為裂紋轉(zhuǎn)子的精確故障診斷提供了理論基礎(chǔ)。
[Abstract]:The nonlinear approximation model of cracked rotor is established, and the nonlinear output frequency domain response function (NOFRFF) and its nonlinear spectrum analysis theory are discussed. Based on the theory, the NOFRF of cracked rotor system is simulated and analyzed. The analysis results show how the new frequency domain components of the cracked rotor system are produced. The hyperharmonic components and sub-resonance phenomena of the cracked rotor system are explained, and the experimental analysis is carried out. The results show that the high order NOFRF is more sensitive than the first order to the crack depth of the rotor, which provides a theoretical basis for the accurate fault diagnosis of the cracked rotor.
【作者單位】： 鄭州大學(xué)機(jī)械工程學(xué)院;鄭州大學(xué)化工與能源學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(514054453)資助~~
【分類號(hào)】：TH133
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本文編號(hào)：1828382