CAJ | 학술논문

中心进气锥腔轴承承载力较高，但气腔容积较大，稳定性较差。对中心进气锥腔轴承结构进行改进，提出环形进气锥腔气体轴承；建立供气孔和轴承间隙组成的完整气体轴承流场，采用层流模式计算不同轴承结构参数时的压力分布、承载力和气容比，并计算优化结构的轴承的承载力和刚度。结果表明，在一定范围内增大锥腔高度和锥腔半径可以提高承载力，增大气容比；改进后的气体轴承承载力和刚度较高，气腔容积大大减小，稳定性提高。
중심진기추강축승승재력교고，단기강용적교대，은정성교차。대중심진기추강축승결구진행개진，제출배형진기추강기체축승；건립공기공화축승간극조성적완정기체축승류장，채용층류모식계산불동축승결구삼수시적압력분포、승재력화기용비，병계산우화결구적축승적승재력화강도。결과표명，재일정범위내증대추강고도화추강반경가이제고승재력，증대기용비；개진후적기체축승승재력화강도교고，기강용적대대감소，은정성제고。
Center inlet gas bearings with tapered chamber have higher capacity,but big gas cavity and poor stability.The gas bearings with center inlet tapered chamber were improved,and a gas bearing with the annular inlet tapered chamber was proposed.The complete gas field consisting of supply hole and clearance was built up,and a laminar flow model was applied to calculate the pressure distribution,capacity and volume ratio in different structural parameters. The bearing ca?pacity and stiffness of the optimized bearing structure was calculated. The results show that the load capacity and the gas volume ratio of gas bearings are increased with the increase of the height and radius of tapered recess in a certain range. The improved gas bearing has a high load capacity and stiffness,its gas cavity is decreased greatly,and its stability is in?creased.