parametric excitation meaning in English
参变激励
参量激发，参量激励
参数激励
Examples
- Dynamics and stability of a non - linear controlled system subject to parametric excitation
参数激励下非线性受控系统的动力学和稳定性 - Investigation to quadratic nonlinearities and two - time superharmonic vibrations of plates in parametric excitation
参数激励薄板平方非线性与2倍超谐振动 - A detailed model of non - linear parametric excitation vibration coupling the stay cable and the girder , in which the static sag as well as the geometric non - linearity are considered , is proposed in this paper . based on several numeric examples investigated by the galerkin method composed with the integration strategy , several kinds of factors effecting stay cable parameter vibration are studied . another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived
本文创新地提出了斜拉桥拉索-桥面耦合参数振动模型，推导了索-桥耦合非线性参数振动方程组，联合galerkin法及数值积分方法，对各种特性的拉索进行了数值求解，得出了影响拉索参数振动的各种因素；提出了斜拉索受轴向端激励参数振动模型，导出了模型的非线性振动方程，使用谐波平衡法得出了产生参数振动需要的最小激励幅值、共振时瞬态及稳态的振动幅值及索拉力的变化特性，并用数值积分方法对实际斜拉桥拉索进行了计算，分析了拉索阻尼对参数振动的影响。 - According to the finite element method result , the parametric vibration of cables in cable - stayed arch bridge becomes prone to be exhibited . then a model of non - linear parametric excitation vibration coupling the stayed cable and the girder , namely , the mode of cable - stayed beam , is proposed in the thesis . and the nonlinear dynamical
3 、首先利用有限元分析方法,得出了斜拉索发生参数共振的可能,然后建立了斜拉拱桥拉索-桥面耦合参数振动模型,即索-梁组合结构模型,推导了索-梁组合结构非线性运动方程,利用多尺度方法研究斜拉索的参数共振和亚谐波共振,并对稳态解的稳定性进行了分析。