CAJ | 학술논문

利用有限元软件建立往复式密封件模型，模拟不同劲度系数下密封件内径的变化，研究弹簧劲度系数、过盈量以及往复速度对密封件密封性能的影响，利用流体动力学计算泵汲率和生热量，利用生热量模拟橡胶温度场的变化。结果表明：簧后内径与劲度系数有着近似线性的关系；随着过盈量的增加，内行程油膜厚度增加，外行程油膜厚几乎不变，导致泵汲率增大，并且生热量随着过盈量的增加而增加，唇口温度随之增加；随着往复速度的增加，密封件的泵汲率及生热量都增加。
이용유한원연건건립왕복식밀봉건모형，모의불동경도계수하밀봉건내경적변화，연구탄황경도계수、과영량이급왕복속도대밀봉건밀봉성능적영향，이용류체동역학계산빙급솔화생열량，이용생열량모의상효온도장적변화。결과표명：황후내경여경도계수유착근사선성적관계；수착과영량적증가，내행정유막후도증가，외행정유막후궤호불변，도치빙급솔증대，병차생열량수착과영량적증가이증가，진구온도수지증가；수착왕복속도적증가，밀봉건적빙급솔급생열량도증가。
A model of reciprocating seal was built by finite element analysis software.The variation of the seal inner di-ameter under different spring stiffness was simulated,the effects of spring stiffness coefficient,interference fit and rod speed on seal sealing performance were studied,and the heat generation and pumping rate were calculated.The result in-dicates that,there is a liner relationship between the spring stiffness coefficient and the seal inner diameter;As the inter-ference fit increases,the oil film thickness is increased during the instroke,and it almost remains the same during the out-stroke,which leads the increase of the pumping rate;The heat generation is increased and the temperature in the seal lip is also increased along the increase of interference fit;Both the heat generation and pumping rate are increased as the rod speed increases.