CAJ | 학술논문

根据静弹性接触理论，建立滚子与滚道同时存在偏斜和歪斜工况下的力学模型，并利用快速傅里叶变换（ FFT）求解其弹性变形，用共轭梯度法求解接触应力。通过分析各种工况参数对接触应力分布的影响发现：歪斜角一定时，随着偏斜角的增大，“偏斜效应”和“边缘效应”均变得更加明显；偏斜角一定时，“歪斜效应”随着歪斜角的增大而逐渐明显，且偏斜角能减弱滚子与内滚道接触产生的“边缘效应”，滚子则与外滚道接触产生更加严重的“偏斜效应”和“歪斜效应”；随着滚子长径比的增加，滚子与滚道接触副产生的“偏斜效应”和“歪斜效应”逐渐明显。最后通过改变滚子凸度提出了一种综合考虑滚子偏、歪斜工况的凸度设计方法，以提高滚子轴承的抗偏、歪斜能力。
근거정탄성접촉이론，건립곤자여곤도동시존재편사화왜사공황하적역학모형，병이용쾌속부리협변환（ FFT）구해기탄성변형，용공액제도법구해접촉응력。통과분석각충공황삼수대접촉응력분포적영향발현：왜사각일정시，수착편사각적증대，“편사효응”화“변연효응”균변득경가명현；편사각일정시，“왜사효응”수착왜사각적증대이축점명현，차편사각능감약곤자여내곤도접촉산생적“변연효응”，곤자칙여외곤도접촉산생경가엄중적“편사효응”화“왜사효응”；수착곤자장경비적증가，곤자여곤도접촉부산생적“편사효응”화“왜사효응”축점명현。최후통과개변곤자철도제출료일충종합고필곤자편、왜사공황적철도설계방법，이제고곤자축승적항편、왜사능력。
Abstratc:Based on the static elastic-contact theory , a model to describe the mechanical contact between the roller and the race is established under misalignment and skewing conditions , and the fast Fourier transform ( FFT) and the conjugate gradient method are employed to obtain the elastic deformation and the contact stress , respectively . Then, the influences of different parameters on the contact stress distribution are analyzed .The results show that (1) at a constant skewing angle , both the misaligned load effect and the edge effect remarkably improve with the increase of the misalignment angle; (2) at a constant misaligned angle , the skewing phenomenon becomes more obvious with the increase of the skewing angle , and the misalignment angle helps to weaken the edge effect caused by the contact between the roller and the inner race , while the misaligned load effect and the skewing phenomenon both become worse when the roller is contacted with the outer race; and (3) with the increase of the length-to-dia-meter ratio, both the misaligned load effect and the skewing phenomenon become more obvious .In addition, a crowning design method considering both the misalignment and the skewing of the roller is presented to improve the anti-misalignment and anti-skewing ability of roller bearings .