CAJ | 학술논문

随着滚动轴承向着高速化和重载化的方向发展，在轴承设计需要考虑“偏载效应”和轴承润滑的影响。以圆弧修型滚子为研究对象，建立偏载工况下的有限长线接触等温弹流润滑模型，研究滚子倾斜角度和卷吸速度对滚子次表面应力的影响。计算结果表明，当滚子发生倾斜后，滚子轴向的压力分布不均，受载端的油膜压力和von Mises应力明显增大，并随着倾斜角变大而增大；当滚子载荷不变，卷吸速度增大时，油膜出口区的二次压力峰逐渐增加，导致次表面最大von Mises应力增大，最大von Mises 应力的位置向滚子表层移动。研究结果表明，滚子倾斜及卷吸速度对滚子的次表面应力有较大的影响。
수착곤동축승향착고속화화중재화적방향발전，재축승설계수요고필“편재효응”화축승윤활적영향。이원호수형곤자위연구대상，건립편재공황하적유한장선접촉등온탄류윤활모형，연구곤자경사각도화권흡속도대곤자차표면응력적영향。계산결과표명，당곤자발생경사후，곤자축향적압력분포불균，수재단적유막압력화von Mises응력명현증대，병수착경사각변대이증대；당곤자재하불변，권흡속도증대시，유막출구구적이차압력봉축점증가，도치차표면최대von Mises응력증대，최대von Mises 응력적위치향곤자표층이동。연구결과표명，곤자경사급권흡속도대곤자적차표면응력유교대적영향。
Along with the roller bearing developed towards high speed and heavy load,the “tilting load effect”and bearing lubrication are in need of consideration in design of the bearing.The finite line contact isothermal elastohydrody-namic lubrication (EHL)numerical model of axially profiled tilted cylindrical roller under tilting load condition was estab-lished.The effects of tilting angle and entrainment velocity on subsurface von Mises stress were studied.The calculation results show that,the pressure distribution in the roller axial direction is uneven with tilting angle appeared.With the in-crease of tilting angle,the pressure and subsurface von Mises stress are increased at the load end.At constant loading of roller,the second pressure spike in exit restriction is increased significantly along with the increasing of the entrainment velocity,which causes the increase of maximum subsurface von Mises stress,and the location of the maximum subsurface von Mises stress is moved to surface layer.The study results show that the tilting angle of roller and entrainment velocity have a quite large influence on subsurface stress of the roller.