地铁列车车钩分级吸能特性模拟*
李术浩1米彩盈1,2孙树磊3
Simulation on Grading Energy Absorption Characteristics of Metro Train Coupler
LI ShuhaoMI CaiyingSUN Shulei
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作者信息:1.西南交通大学机械工程学院， 610031， 成都；
2.大功率交流传动电力机车系统集成国家重点实验室， 420001， 株洲；
3.西华大学汽车与交通学院， 610039， 成都
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Affiliation:School of Mechanical Engineering, Southwest Jiaotong University, 610031, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.09.025
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中图分类号/CLCN:U270.34
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栏目/Col:研究报告
摘要:
为了研究地铁列车车钩的分级吸能特性，在Matlab中建立车钩力元的Simulink模型，模拟车钩的分级吸能特性，导入UM多体动力学软件，建立了单自由度六编组车辆冲击动力学模型。参考EN 15227—2011《铁道车辆车体的耐碰撞性要求》标准［1］和相关技术条件要求，在UM中分别模拟8 km/h、15 km/h和25 km/h三种地铁列车连挂碰撞场景。计算结果表明：8 km/h调车冲击工况，碰撞界面处最大冲击力为625.50 kN，车钩缓冲器行程为131.52 mm；15 km/h轻度冲击工况及25 km/h中度冲击工况，碰撞界面最大冲击力均达到压溃管及剪切装置的标定值，其行程分别为289.21 mm、951.30 mm，满足连挂碰撞要求，且最大冲击力及行程都在相应吸能结构的阈值范围内，验证了车钩力元Simulink模型的正确性。
Abstracts:
In order to study the grading energy absorption characteristics of metro train coupler, a Simulink model of coupler force element is established in Matlab software to simulate the coupler grading energy absorption characteristics. By introducing the UM multiple body dynamics software, a single-degree-of-freedom impact dynamics model for the six car train is established. Referring to the EN 15227-2011 Criteria for Railway Vehicle Collision and related technical requirements, three kinds of collision scenarios of connecting subway trains at the speed of 8 km/h, 15 km/h and 25 km/h respectively are simulated in UM. The calculation results show that under 8 km/h shunting impact condition, the maximum impact force at the impact interface is 625.50 kN, the action stroke of the coupler is 131.52 mm, while under 15 km/h mild impact condition and 25 km/h moderate impact condition, the maximum impact force at the impact interface reaches the calibration value of the crushing pipe and the shearing device, the action strokes are 289.21 mm and 951.30 mm respectively. Since the maximum impact force and stroke are within the threshold of the corresponding energy absorbing structure, the correctness of the coupler force element Simulink model is verified.
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