高速磁浮列车三明治复合裙板强度研究
吴秋宇王明猛肖守讷杨冰阳光武朱涛王万静
Research on the Strength of Sandwich Composite Skirt for High-speed Maglev Train
WU QiuyuWANG MingmengXIAO ShouneYANG BingYANG GuangwuZHU TaoWANG Wanjing
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作者信息:西南交通大学牵引动力国家重点试验室， 610031， 成都
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Affiliation:State Key Laboratory of Traction Power, 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.2020.09.022
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中图分类号/CLCN:U266.4
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栏目/Col:研究报告
摘要:
三明治复合板结构具有比强度高、比刚度大、优良的隔热和隔声性能等特点，广泛应用于轨道交通等多个领域。进行了三明治夹层板仿真方法的探究，得到与试验结果相吻合的适用于高速磁浮裙板结构的仿真建模方法，验证了三维实体单元建模法在裙板结构静强度分析中的准确性。通过对螺栓校核的两个标准——《机械设计手册》和《VDI 2230—2003螺栓强度校核标准》，进行对比分析，选择了更适合螺栓连接结构校核的标准。利用三维实体建模法建立了高速磁浮列车裙板的有限元模型，对裙板结构在直线工况、过小曲线半径工况下的结构强度和关键连接部位螺栓连接区域强度进行分析，验证了裙板结构的合理性，得到了在各工况下的应力敏感区域和所设计连接结构在《VDI 2230—2003螺栓强度校核标准》下的安全性。
Abstracts:
The sandwich composite panel structure features advantages like specific strength, specific stiffness, excellent thermal insulation and sound insulation performance, therefore is widely applied in many fields of rail transit. In this paper, the sandwich panel simulation method is explored, and a simulation modeling method suitable for high-speed maglev skirt structure is obtained, which is very close to the experimental result and is used to verify the accuracy of the 3D solid element modeling method in the static analysis of the apron structure. Then, the Mechanical Design Manual and the VDI 2230-2003 Bolt Strength Checking Standard two standards for bolt calibration are compared and analyzed, a standard more suitable for bolting structure check is selected. Finally, a finite element model of the high-speed maglev train apron is established by using the 3D solid modeling method, in order to analyze the structural strength of the apron and the strength of the bolt connection area of key connection parts under different working conditions, such as the straight line and small curve radius. Thus, the rationality of the apron structure is verified, the safety of stress sensitive area under various working conditions and the designed connection structure under the VDI 2230 Standard are obtained.
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