【摘要】 将增量谐波平衡法推广至分析输液管的非线性振动问题 ,研究了输液管的幅频曲线特性 .数值结果显示输液管由于流体的作用将产生振幅突变这一不稳定现象 ,并给出输液管的周期解 .同时还研究了流速和管液质量比对系统振动特性的影响更多还原

【Abstract】 Incremental harmonic balance method is applied to geometrically nonlinear vibration analysis of the simply supported pipe conveying fluid. Some unstable phenomena of the pipe considered to be important to this kind of structure are presented in the numerical results. The influences to its dynamic characteristics of several parameters of the system are also studied.更多还原