摘要
建立了一种列车－直线轨道空间耦合振动分析模型，其中车辆（包括机车）表示成１９自由度多刚体系统模型，轨道离散成３０自由度空间轨道单元。以势能驻值原理和“对号入座”法则形成空间耦合时变系统的振动矩阵方程，以振动能量随机分析原理为基础，根据实测构架蛇行波随机模拟出各种速度下的构架人工蛇行波作为激振源，采用Ｗｉｌｓｏｎ－θ法求解各响应的时程曲线，计算结果与列车、轨道振动测试结果一致，首次得出了轨枕横向。
A train tangent track space coupling system model is presented in this paper,where the vehicle is considered as a ninteen freedomed multi body system and the track is discreted as thirty freedomed finite elements.The equation describing the movement of the space coupling time varying system is formulated on the basis of minimum potential theory and “sit in the right seat”principle.Response results are obtained by means of Wilson θ direct integration where the artificial crawl wave is utilised as vibrating resource.The artificial crawl wave is simulated according to the bogie's spot testing lateral wave on the basis of energy random analysis theory.Numerical results are close to the spot testing dynamic data of the train and track system.The time history dynamic response curves of the sleepers which are very close to the spot testing dynamic response curves are obtained for the first time.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1997年第1期101-107,共7页
Journal of the China Railway Society
基金
铁道部科技司重点攻关项目
关键词
轨道
空间耦合
时变系统
铁路
列车
振动
vehicle model
track element
space coupling time varying system
artificial crawl wave
