摘要
建立弓网系统垂向耦合动力学模型,将接触线垂向不平顺实测数据引入该模型,仿真得到计及接触线垂向不平顺时不同速度条件下的弓网间接触压力值;以接触线垂向不平顺实测数据为基础,建立接触线垂向不平顺谱,对该线路的接触线垂向平顺状态进行评估;基于三角级数合成法得到一系列具有相同功率谱密度的接触线垂向不平顺样本,仿真分析得到弓网间接触压力的统计量。通过研究,揭示了接触线垂向不平顺对弓网间接触压力的影响规律。
Dynamical responses of the pantograph-catenary coupled system were studied in consideration vertical irregularities of contact wires. The dynamical model of the pantograph-catenary coupled system was estab- lished. The measured data of vertical irregularities of contact wires were introduced into the modal. Though simulation, the contact pressures between the pantograph and contact wires of vertical irregularities were ob- tained for different train speeds. The contact wire vertical irregularity PSD was worked out by using maximum entropy spectral estimation （MESE） based on the measured contact wire height data. The regularity of the con- tact wire heights was evaluated. The contact wire vertical irregularity samples corresponding to the same PSD were obtained and introduced into the pantograph-catenary coupled dynamical model. The statistics of contact pressures between the pantograph and the contact wires were deduCed from simulations. The law of contact wire vertica wire vertica irregularities affecting contact pressures was revealed. The numerical results show that the contact irregularities have significant influence on the dynamics of the pantograph-catenary system.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2012年第7期24-29,共6页
Journal of the China Railway Society
基金
国家自然科学基金(10902096
10932009)
中央高校基本科研业务费专项资金(2011QNA4022)
国家重点基础研究发展计划(973计划)(2011CB711105)
关键词
接触线
垂向不平顺
受电弓
功率谱密度
catenary
vertical irregularity of contact wire
pantograph
power spectrum density （PSD）
