摘要
汽轮发电机组轴系在受到各种扭转激励下,是否会发生强烈扭振响应,则与其对扭转激励的固有敏感性密切相关.本文提出一种方法,在获得轴系各阶频率、振型和模态刚度后,便可根据文中提出的“共振比因子”这一新参数来估计轴系对扭转激励的固有敏感性.同时表明,轴系各阶模态对激励的敏感性可能大不相同.
To what extent a rotor string of a turbine-generator set responds to torsional excitation deponds on its natural ensitivity. A method is proposed by which after frequencies, model shapes and modal regidties of different orders have been obtained, the natural sensitivity can be evaluated with the help of a new parameter called 'resonance ratio factor' as proposed in the paper, It is also explicated that the disparity of excitation sensitivity of different modes may be quite large. Figs 11, table 1 and refs 5.
出处
《动力工程》
CAS
CSCD
1992年第4期34-39,68,共6页
Power Engineering
