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泵水潤(rùn)滑軸承—轉(zhuǎn)子系統(tǒng)的動(dòng)力學(xué)特性研究
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江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目(PAPD);江蘇省科技支撐(工業(yè))項(xiàng)目(BE2012150);江蘇省高校自然科學(xué)基金資助項(xiàng)目(11KJB470004);江蘇大學(xué)高級(jí)人才啟動(dòng)基金資助項(xiàng)目(1281440007)


Rotor Dynamic Characteristics of Water Lubricated Bearing for Pumps
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    摘要:

    針對(duì)當(dāng)前泵水潤(rùn)滑軸承—轉(zhuǎn)子系統(tǒng)模態(tài)分析與穩(wěn)定性等動(dòng)力學(xué)特性研究相對(duì)薄弱等問(wèn)題,,以設(shè)計(jì)的某高壓多級(jí)泵為例,通過(guò)合理簡(jiǎn)化,,建立研究該泵軸承—轉(zhuǎn)子系統(tǒng)動(dòng)力學(xué)特性的三維實(shí)體模型與數(shù)學(xué)模型,;利用ANSYS進(jìn)行的考慮慣性效應(yīng)、不同角速度的多載荷模態(tài)分析生成了剛性支承坎貝爾圖,,計(jì)算得到了考慮陀螺效應(yīng)的前4階固有頻率,、3000r/min載荷下的正進(jìn)動(dòng)渦動(dòng)轉(zhuǎn)速(即臨界轉(zhuǎn)速);分析得出了系統(tǒng)在工作轉(zhuǎn)速與非工作轉(zhuǎn)速下的軸系不平衡響應(yīng)曲線,;恒定轉(zhuǎn)速下突加激勵(lì)時(shí)轉(zhuǎn)子系統(tǒng)的瞬態(tài)特性分析表明,,雖然突加激勵(lì)力后轉(zhuǎn)子系統(tǒng)會(huì)出現(xiàn)較大振動(dòng),但隨后振幅逐漸減小并趨于穩(wěn)定,,說(shuō)明該水潤(rùn)滑軸承—轉(zhuǎn)子系統(tǒng)是穩(wěn)定的剛性系統(tǒng),。

    Abstract:

    Taking HP multistage pump as example, physical model and mathematical model of its bearing-rotor system were established though appropriate simplified process. Four stiffness coefficients and four damp coefficients which express its dynamic characteristic of the water membrane bearing were deduced and calculated. Rigid support Campbell drawing by multi-load modal analysis on ANSYS considering inertial effect was generated. The fore four natural frequency considering inertial effect and critical speed on the load of 3000r/min were also obtained. Unbalance response curves of the shafting on working speed and unworking speed were obtained by analysis. This water lubricated bearing-rotor system was certified to be a steady rigid system by transient state characteristic analysis which driving force was feed in a sudden and the rotational speed was considered. Though rather large vibration may appear in the beginning of this period, oscillating amplitude will be reduced gradually and return to stabilization soon.

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蔣小平,施衛(wèi)東,李偉,葉曉琰,胡敬寧,田海平.泵水潤(rùn)滑軸承—轉(zhuǎn)子系統(tǒng)的動(dòng)力學(xué)特性研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(1):62-66. Jiang Xiaoping, Shi Weidong, Li Wei, Ye Xiaoyan, Hu Jingning, Tian Haiping. Rotor Dynamic Characteristics of Water Lubricated Bearing for Pumps[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(1):62-66.

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  • 在線發(fā)布日期: 2012-12-31
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