机械研究与应用
機械研究與應用
궤계연구여응용
MECHANICAL RESEARCH & APPLICATION
2014年
5期
96-98
,共3页
转子%有限元%临界转速%模态分析
轉子%有限元%臨界轉速%模態分析
전자%유한원%림계전속%모태분석
rotor%finite element%critical speed%modal analysis
采用有限元法对某变频电机转子进行了模态分析，计算得到了转子的临界转速、固有频率和振型。通过临界转速和振型图分析了转子的振动特性。计算结果表明，转子的设计具有良好的结构刚度，转子系统临界转速安全系数合理。最后对比了有限元法和传递矩阵法的临界转速计算结果，证实了有限元法的准确性。
採用有限元法對某變頻電機轉子進行瞭模態分析，計算得到瞭轉子的臨界轉速、固有頻率和振型。通過臨界轉速和振型圖分析瞭轉子的振動特性。計算結果錶明，轉子的設計具有良好的結構剛度，轉子繫統臨界轉速安全繫數閤理。最後對比瞭有限元法和傳遞矩陣法的臨界轉速計算結果，證實瞭有限元法的準確性。
채용유한원법대모변빈전궤전자진행료모태분석，계산득도료전자적림계전속、고유빈솔화진형。통과림계전속화진형도분석료전자적진동특성。계산결과표명，전자적설계구유량호적결구강도，전자계통림계전속안전계수합리。최후대비료유한원법화전체구진법적림계전속계산결과，증실료유한원법적준학성。
In this paper, modal analysis of a rotor in frequency converted motor is made by using the finite element method, and the critical speed, natural frequency and vibration of the rotor are abtained. Vibration characteristics of the rotor is ana-lyzed through the critical speed and vibration diagram. The calculation results show that design of the rotor has good structural stiffness, and the safety factor of the critical speed of rotor system is reasonable. By comparing the critical speed results of the finite element method and the transfer matrix method, the accuracy of the finite element method has been confirmed.
