本文選題：軸系 + 球軸承��； 參考：《機(jī)械設(shè)計(jì)與制造》2017年11期

【摘要】：軸系動(dòng)態(tài)特性受軸承剛度影響,而軸承剛度隨軸系轉(zhuǎn)速呈強(qiáng)非線性。因而研究軸系動(dòng)態(tài)特性首先需要確定軸承剛度。首先使用球軸承受力分析的擬靜力學(xué)模型,計(jì)算球軸承不同轉(zhuǎn)速下的剛度,計(jì)算軸承剛度時(shí),考慮了軸承內(nèi)圈由于離心慣性力造成的變形的影響,使剛度計(jì)算值精確化;進(jìn)而使用梁單元對(duì)軸系進(jìn)行離散建立軸系的有限元模型,并求解了軸系的臨界轉(zhuǎn)速;并以臨界轉(zhuǎn)速為優(yōu)化目標(biāo)、對(duì)軸承跨距及軸內(nèi)徑進(jìn)行了優(yōu)化,提升了軸系的動(dòng)態(tài)性能。文中研究內(nèi)容以Matlab為基礎(chǔ)進(jìn)行編程實(shí)現(xiàn)。
[Abstract]:The dynamic characteristics of shafting are affected by the bearing stiffness, and the bearing stiffness is strongly nonlinear with the rotation speed of shafting. Therefore, it is necessary to determine the bearing stiffness to study the dynamic characteristics of shafting. Firstly, the quasi-static model of bearing force analysis is used to calculate the stiffness of ball bearing at different rotational speeds. When calculating the stiffness of bearing, the influence of deformation caused by centrifugal inertia force on the inner ring of bearing is considered, so that the calculation value of stiffness is accurate. Then the finite element model of the shafting is established by using beam element to discretize the shafting, and the critical speed of the shafting is solved, and the span and the inner diameter of the shaft are optimized with the critical rotational speed as the optimization objective, and the dynamic performance of the shafting is improved. The content of this paper is programmed on the basis of Matlab.
【作者單位】： 武漢工程大學(xué)機(jī)電工程學(xué)院;
【基金】：國家科技重大專項(xiàng)(2009ZX040001-015) 國家自然科學(xué)基金(51375186,61273176)
【分類號(hào)】：TH133.3

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1 李洪亮;球軸承—不對(duì)中轉(zhuǎn)子系統(tǒng)的非線性振動(dòng)特性研究[D];哈爾濱工業(yè)大學(xué);2017年

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本文編號(hào)：1944341