Presents the study on the law governing the occurrence of bistable state in the squeeze film damper supported rigid rotor system by theoretical calculations,the way q calculating the bistable state characteristics, the analysis of bistable state characteristics using bearing parameter B and mass eccentricity U as basic parameters, and the ranges of B and U values established, and concludes that the occurrence of bistable state can be avoided provided design parameters are properly selected so that the B and U values are not in the ranges established. This makes it convenient to optimize the squeeze film damper design parameters.
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机译:Occurrence and Removal of Enterohemorrhagic Escherichia coli O157:H7 in Four Full-scale Sewage Treatment Systems in Beijing, ChinaAU Zhang Zhennan Zheng Shaokui Xu Yahui Li Juan Liu Xinchun (xcliu@ucas.ac.cn)