承受移动均布二系悬挂模型的磁浮三跨连续梁振动分析

VIBRATION ANALYSIS OF CONTINUOUS MAGLEV GUIDEWAY TRAVERSED BY DISTRIBUTED MOVING TWO-STAGES SUSPENSION MODEL

考虑磁浮列车与轨道梁之间的主动控制电磁力的作用,车辆简化为移动均布二系悬挂模型,建立了磁浮车辆/轨道梁耦合振动分析模型,对磁浮列车在三跨连续梁上通过时轨道梁的振动反应进行了数值仿真。研究了车辆长度、车速、轨道梁刚度和跨度比等参数对轨道梁动力特性的影响,分析了参数f1/(v/l)与轨道梁动力反应的关系。建议轨道梁动力设计中以控制轨道梁的冲击系数和振动加速度为主,所得结论可为高速磁浮轨道梁设计提供理论依据。

With consideration of the active magnetic force acting both on guideway and vehicles, the maglev vehicle-guideway interaction model in which vehicles were simplified as distributed moving two-stages suspension model was developed. Numerical simulation on the dynamical response of guideway interacting with maglev vehicles was performed. The relationships between vehicle length, vehicle speed, bending rigidity, span ratio of guideway and dynamical responses of guideway were discussed. It is suggested that impact coefficient and acceleration of guideway are primary factors taken into consideration in guideway design. The conclusions can serve the design of high-speed maglev guideway.