CAJ | 학술논문

基于有关索的建模方法建立了覆冰四分裂导线连续体三维耦合的非线性动力学模型。充分考虑结构参数对系统各阶模态线性固有频率的影响，应用 Mathematica 程序进行数值模拟可得系统舞动轨迹图和时间历程曲线。根据动力系统稳定性判据可判别该系统属于垂直激发舞动模式，导线振动频率偏离于该阶模态线性固有频率，表明非线性因素使振幅对频率产生了影响。通过与有限元结果进行比较发现，连续体模型能很好地反应系统的结构和振动特性。
기우유관색적건모방법건립료복빙사분렬도선련속체삼유우합적비선성동역학모형。충분고필결구삼수대계통각계모태선성고유빈솔적영향，응용 Mathematica 정서진행수치모의가득계통무동궤적도화시간역정곡선。근거동력계통은정성판거가판별해계통속우수직격발무동모식，도선진동빈솔편리우해계모태선성고유빈솔，표명비선성인소사진폭대빈솔산생료영향。통과여유한원결과진행비교발현，련속체모형능흔호지반응계통적결구화진동특성。
Three-dimensional coupling continuum model of iced 4-bundle conductor was established based on modelling methods of flexible cable.A thorough analysis was conducted to determine the effects of structure parameters on every order modal linear nature frequency of the system,orbit dia-grams and time-history curves of galloping system were presented through numerical simulation by means of the Mathematica program.The system belongs to vertical self-excited galloping mode ac-cording to stability criterion of dynamics system,vibration frequencies departure from the same order linear nature frequencies,it shows that nonlinear factors make amplitude produce influences on fre-quency.Continuum model of iced conductor can reflect characteristics of the system by comparing with finite element.