CAJ | 학술논문

针对基于Hertz接触理论的轴承刚度计算方法在实际应用中存在较大局限性的问题，通过实验方法建立基于超声波的油膜刚度测试模型，并运用现代微观理论建立了滚子轴承的接触刚度分形模型，推导出油膜刚度和接触刚度与径向载荷的关系。研究分析表明随着径向载荷的增加，油膜刚度和法向接触刚度不断增大。为证明该方法的有效性，运用所建立的模型对某型圆柱滚子轴承进行实例分析，计算得出该滚子轴承的径向刚度。结果表明：油膜刚度与径向载荷成线性关系，随着径向载荷的增大，法向接触刚度增长速率变缓。
침대기우Hertz접촉이론적축승강도계산방법재실제응용중존재교대국한성적문제，통과실험방법건립기우초성파적유막강도측시모형，병운용현대미관이론건립료곤자축승적접촉강도분형모형，추도출유막강도화접촉강도여경향재하적관계。연구분석표명수착경향재하적증가，유막강도화법향접촉강도불단증대。위증명해방법적유효성，운용소건립적모형대모형원주곤자축승진행실례분석，계산득출해곤자축승적경향강도。결과표명：유막강도여경향재하성선성관계，수착경향재하적증대，법향접촉강도증장속솔변완。
Traditional Hertz contact theory based method for bearing stiffness calculation is challenged in practial engineering ap-plications.To deliver a practical method,two bearing stiffness models were introduced.A test model based on the ultrasonic was constructed for calculating bearing oil stiffness.A contact stiffness fractal model is presented as well for roller bearing contact modeling and analysis,which is constructed based on modern micro theory.Based on these two models,the relationship between the oil stiffness as well as the contact stiffness and the radial load of the bearing was formulized,and the bearing stiffness calcula-tion was facilitated.The proposed method was demonstrated by applying to the calculation of radial stiffness for a cylindrical roll-er bearing.The results show that oil stiffness is linear to radial load,and contact stiffness is increasing slowly with the increase of radial stiffness.