培训1-旋转机械转子动力学和故障机理.pdf

1. 2. 3. 1. 1. 2. 3. 4. Fx −kx , Rx −cx , Qx H sin ωt mx −kx −cx +H sin ωt 2 k c H ωn ; 2n ; h m m m m 2 x +2nx +ω x h sin ωt n x x +x 1 2 x 2 (x +2nx +ω x 0) 1 n −nt 2 2 x Ae sin( ω −ω t +α) 1 n A α x 2 x2 b si