会议专题

Effects of Two Cracks in Shafts on Dynamic Characteristics of Two-span Rotor-bearing System

  The nonlinear dynamic model of two-span rotor-bearing system with two cracks in shafts is set up,and the effects of two cracks in shafts on dynamic characteristics of the rotor-bearing system are analyzed.Along with the increase of the crack depth in first span,the chaotic and periodic motions increase,and the quasi-periodic motion decrease in the supercritical rotate speed.There are harmonic elements of 1/4,1/2 and 3/4 frequency division within the sub-critical speed range at different crack depths.There appears the frequency doubling resonance obviously when the crack depths are larger.Along with the increase of the crack depth in second span,the main influences to the responses of system are in the second span.The chaotic regions increase and then decrease and the periodic motions region increase in the sub-critical rotate speed range.

Rotor-bearing System Crack in shaft Nonlinear characteristics

YueGang LUO SongHe ZHANG Bin WU HongYing HU

Dalian Nationalities University, Dalian 116600, China

国际会议

3rd International Conference on Frontiers of Manufacturing and Design Science(第三届制造与设计科学前沿国际会议(ICFMD))

香港

英文

1270-1274

2012-12-11(万方平台首次上网日期,不代表论文的发表时间)