CAJ | 학술논문

针对带颗粒阻尼器的旋转平板叶片结构提出基于离散元和有限元的耦合仿真算法。仿真结果表明：所提出的耦合仿真算法在很宽的频带范围内都是可行的；带颗粒阻尼器的旋转平板叶片结构的减振效果受平板叶片的转速影响很大，带颗粒阻尼器的旋转平板叶片结构的第一、二阶振动响应随转速的提高而增加，即阻尼作用有所降低。第三阶振动响应先降低，然后迅速增加，转速达到1000 r/min后趋于平稳。
침대대과립조니기적선전평판협편결구제출기우리산원화유한원적우합방진산법。방진결과표명：소제출적우합방진산법재흔관적빈대범위내도시가행적；대과립조니기적선전평판협편결구적감진효과수평판협편적전속영향흔대，대과립조니기적선전평판협편결구적제일、이계진동향응수전속적제고이증가，즉조니작용유소강저。제삼계진동향응선강저，연후신속증가，전속체도1000 r/min후추우평은。
A numerical model was developed to evaluate the vibration of a rotating plate with particle damping numerically.The model was based on the combination of FEM with DEM.The simulation results indicated that the coupled simulation algorithm is remarkably effective over a wide frequency range;the vibration reduction performance of the rotating plate with particle dampers is strongly related to its rotating velocity;the dynamic responses of the 1 st and 2 nd modes of the plate grow with increase in the rotating spee,i.e.,the damping action of the plate drops;the dynamic response of its 3 rd mode firstly drops and then rises rapidly,it trends to wards a steady state after the rotating speed reaches 1000 r/min.