摘要
从弹性势能、动能相等推导出刚性悬挂接触网悬挂机构的等效刚度及等效质量,在此基础上,建立起刚性悬挂接触网的计算模型,并利用假设模态法得到刚性悬挂接触网的振动微分方程。采用满足边界条件的试函数方法,利用QR法计算得到刚性悬挂接触网的固有频率及相应的特征向量。建立了受电弓与刚性悬挂接触网耦合动力学模型,并对列车的运行速度、接触网的跨距以及弓头质量等参数对弓网间接触压力的影响进行了分析。
The equivalent rigidity and the equivalent mass are derived from the theory of the equal potential energy and kinetic energy. Based on this, the physical model of the rigid suspension catenary is established. By using the method of the hypothesis modes, the vibrational differential equation of the rigid suspension catenary is set up. The inherent frequency and the corresponding eigenvector, that is to say, the mode function is solved with the method of the trying function that is fit to the condition of the boundary. Together with the SBS81 pantograph, the coupling dynamical model of the pantograph/catenary systems is established. At last, the analysis and the comparison of the contact force are studied under the condition of the changes, such as the velocity of the locomotive, the span of the catenary and the mass of the pantograph head.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2003年第2期24-29,共6页
Journal of the China Railway Society
关键词
刚性悬挂接触网
悬挂机构
假设模态法
动力学
rigid suspension catenary
suspension institution
method of hypothesis modes
dynamics
