竖曲线参数对200km/h速度等级机车动力学性能的影响  

Influence of vertical curve parameters on dynamic performance of high speed locomotives

作　　者：李国朋[1] 陈清[1] 王甜甜 陈迪来[3] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]青岛地铁集团有限公司运营分公司,山东青岛260012 [3]西南交通大学机械工程学院,四川成都610031

出　　处：《电力机车与城轨车辆》2015年第2期36-39,46,共5页Electric Locomotives & Mass Transit Vehicles

摘　　要：文章利用多体动力学软件SIMPACK建立了200 km/h速度等级机车动力学模型,分析了两种形式竖曲线的半径对垂向加速度、轮轨垂向力和轮重减载率的影响,并且根据现行铁道机车车辆动力学性能评定规范加以评价。结果表明:随着竖曲线半径的增大,车体垂向加速度逐渐减小,并趋于平稳,竖曲线半径对轮轨垂向力和轮重减载率影响较小;考虑轨道随机不平顺时,根据车体垂向加速度判断,凸形竖曲线略好于凹形竖曲线;随着半径的变化,机车轮轨垂向力和轮重减载率变化不大,且均属优良范围。Using multibody dynamics software SIMPACK to set up a 200 km/h locomotive dynamic model,influence of two forms of vertical curve radius on vertical acceleration,wheel-rail vertical force and rate of wheel load reduction is analyzed and evaluated under the existing railway vehicle dynamics performance evaluation norms. The results show：with the increase of vertical curve radius,vertical acceleration of body decreases and tends to smooth.Influence of vertical curve radius on the wheel-rail vertical force and rate of wheel load reduction is little. When considering track random irregularity,according to vertical acceleration of the body,convex vertical curve is slightly better than the concave vertical curve. With the changing of radius,wheel-rail vertical force and rate of wheel load reduction change little. They are excellent.

关 键 词：机车 竖曲线 平稳性 轨道随机不平顺 

分 类 号：U260.11[机械工程—车辆工程]