液化天然气铁路罐车罐体的有限元分析

发布时间：2018-05-06 12:58

本文选题：铁路罐车 + 有限元分析　；参考：《低温工程》2016年02期

【摘要】：依据TB/T1335—1996《铁道车辆强度设计及试验鉴定规范》及70 t级铁路货车的强度考核要求,采用ANSYS有限元方法对中国北车集团所设计的、拥有自主知识产权的中国首个液化天然气铁路罐车罐体进行静强度计算。计算结果表明,罐体高应力区主要集中在水平拉杆组件和玻璃钢支撑位置。其中,玻璃钢支撑位置内罐加强圈最大应力879 MPa,外补强板最大应力460 MPa,均超出材料的许用应力。对超出许用应力部分进行结构改进,对加强圈添加翼板,外补强板添加14 mm厚筋板。改进结构后,内罐加强圈厚度为16 mm时,加强圈结构最大应力246 MPa;外补强板筋板间隔角度为30°时,外补强板及筋板结构的最大应力为276 MPa。改进后的罐体结构满足强度考核要求。
[Abstract]:According to TB/T1335-1996 Code for strength Design and Test Identification of Railway Rolling Stock and the requirement of strength Assessment for 70t Railway Freight cars, the ANSYS finite element method is used to design the China North Rail Corporation (CNR). The static strength of China's first liquefied natural gas railway tanker tank body with independent intellectual property rights is calculated. The results show that the high stress zone of the tank is mainly concentrated in the horizontal rod assembly and the support position of FRP. The maximum stress of the reinforcing ring of the inner tank at the support position of FRP is 879 MPA, and the maximum stress of the external reinforcement plate is 460 MPA, which exceeds the allowable stress of the material. The structure of excess allowable stress is improved, the flange plate is added to the strengthened ring, and the 14 mm thick stiffened plate is added to the external reinforcement plate. After improving the structure, the maximum stress of the stiffening ring structure is 246 MPA when the thickness of the reinforcing ring is 16 mm, and the maximum stress of the external reinforcement plate and the stiffened plate structure is 276 MPA when the interval angle of the reinforcement plate is 30 掳. The improved tank structure meets the requirements of strength assessment.
【作者单位】：西安交通大学能动学院制冷低温工程研究所;西安轨道交通装备有限责任公司;
【基金】：中国博士后科学基金(2012M511999) 中国铁路总公司科技研究开发项目“液化天然气铁路罐车技术研究”项目资助
【分类号】：U272.4

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