1振动模态分析的基本理论 1.2复模态理论 cm1.「k0「f (8) h Ay+ By= p 0/4 c m P 0 Shanghai Jiaotong University -Engineering Mechanics Experimental CeneterShanghai Jiaotong University - Engineering Mechanics Experimental Ceneter 11 1.振动模态分析的基本理论 1.2 复模态理论 (8) 0 0 0 0       =       − +       f y m k y m c m  Ay  + By = P (9)       =       − =       = 0 , 0 0 , 0 f P m k B m c m A