Flexion Movement Analysis of Horizontal （弯曲运动水平的分析）.pdfVIP

Flexion Movement Analysis of Horizontal Centrifuges Rotors Having the Basket Between the Bearings 1 2 1 MIHAIL BOIANGIU *, TEODOR SIMA , AUREL ALECU 1 Politehnica University of Bucharest, Department of Mechanics, 313 Splaiul Independenþei, 060042, Bucharest, Romania 2 Politehnica University of Bucharest, Department of Process Equipment, 313 Splaiul Independenþei, 060042, Bucharest, Romania This dissertation presents a study model on the bending vibrations of horizontal centrifuges having the basket between the bearings. The shaft basket assembly is moulded as a discrete system with two degrees of freedom. The influence of the fixing point of the basket and of its centre of mass positioning and of the revolution speed upon its natural pulsations is herein studied. The influence of the gyroscopic couple is also considered. Keywords: horizontal centrifuge, vibrations, natural frequencies, critical revolution speed The dissertations [1, 2] study the bending vibrations of - with regard to the centrifuges, in general, two aspects the horizontal centrifuges with a console mounted basket are taken into consideration: and of the centrifuges with a vertical axis as well as the - the system rigidity on which basis the angular speed of influence of the construction and functional factors upon the shaft for its comparison with the critical angular speed its natural pulsations. resulted is determined [3]; For technological reasons, in practice, horizontal - the flexion movement determined by positioning the centrifuges with the basket mounted between the bearings masses (the