应变强化罐车在行进过程中安全稳定性研究
发布时间：2018-08-26 13:37
【摘要】：本文主要以《液化气体运输车》，《液化气体汽车罐车安全监察规程》，ASME的《移动式压力容器》的相关标准为依托，以盛装液体的奥氏体不锈钢罐车为研究对象，通过数值模拟方法对移动压力容器罐车在行进过程中制动或者拐弯等工况进行了研究，主要探讨和研究自由面的液体晃动数值模拟方法。初步研究液体晃动对罐车壁面的冲击作用以及罐车内的防晃板的设计进行探究，分析和总结奥氏体不锈钢轻量化技术对移动式罐车的安全稳定的影响和带来的社会经济效益。工作如下： (1)对国内几家生产汽车罐车的主要厂家进行了调研。根据《液化气体运输车》，《液化气体汽车罐车安全监察规程》，ASME的《移动式压力容器》的相关标准中汽车罐车内部防波板设置合理性有待商榷，防波板详细的形状结构设计及充装系数问题还没有做出具体的解释。 （2）确定了数值模拟模型和方法。选用有限体积法和简化的刚体模型，借助Fluent软件，构建与文献中等尺寸的卧式柱形罐车进行晃动模拟，获得了液体介质晃动的固有频率。再通过与文献中实体试验己有的实验值和部分数值解进行比较验证，确定了VOF（volume of finite）方法用于自由液面的定义，选择κ-ε模型，编写UDF用户自定义函数加载到Fluent求解器上去创建非恒定加速度模块，成功地实现罐车制动的液体晃动模拟过程，为进一步研究探索提供了方法和方向。 (3)液体晃动数值模拟。对罐车制动时内部介质晃动进行了数值模拟，研究了充装系数应大于0.8最好，液体密度、制动加速度与罐车壁面受到的最大冲击力，，一次峰值冲击力出现的时间，二次峰值冲击力出现的时间，平复时间等这几个评判因素之间的相互关系，得出最佳防波板，计算得出了两种罐车设计方法的拐弯最大倾斜角。 (4)防波板的设置探究。探究比较几种形式的防波板的防波效果的优劣，并对常见的防波板提出改进了和优化设计，为罐车防波板设计提供有力的理论和数据支撑。 （5）通过对GB150-2011常规设计方法和应变强化技术设计的2种奥氏体不锈钢罐车进行了对比模拟，模拟了在不同工况下的介质晃动模拟情况，研究发现奥氏体不锈钢轻量化技术对移动式罐车的安全稳定的影响很小，但却带来了可观的社会经济效益
[Abstract]:This paper is mainly based on the relevant standards of "liquefied Gas Transport vehicle", "Safety Supervision Regulation of liquefied Gas vehicle Tank" and "Mobile pressure vessel" of ASME, and takes austenitic stainless steel tank truck filled with liquid as the research object. In this paper, a numerical simulation method is used to study the braking or turning of moving pressure vessel tankers, and the numerical simulation method of liquid sloshing on the free surface is mainly discussed. The impact of liquid sloshing on the wall of tank car and the design of anti-rocking plate in tank car were studied preliminarily. The influence of austenitic stainless steel lightweight technology on the safety and stability of mobile tank car and the social and economic benefits were analyzed and summarized. The work is as follows: (1) the main manufacturers of domestic car tank car were investigated. According to the relevant standards of "liquefied Gas Transport vehicle", "Safety Supervision Code for liquefied Gas vehicle Tank" and "Mobile pressure vessel" of ASME, the reasonableness of setting internal anti-wave plate of automobile tank car is open to question. The detailed shape and structure design and filling coefficient of the wave-proof plate have not been explained in detail. (2) the numerical simulation model and method are determined. The finite volume method and the simplified rigid body model are used to simulate the sloshing of horizontal cylindrical tank car with the aid of Fluent software, and the natural frequency of liquid medium sloshing is obtained. By comparing with the experimental data and some numerical solutions of the solid test in literature, the definition of free liquid surface using VOF (volume of finite) method is determined, and the 魏-蔚 model is selected. The UDF user-defined function is programmed to load the Fluent solver to create an unsteady acceleration module, which successfully realizes the simulation process of liquid sloshing of tank car braking. It provides a method and direction for further research. (3) numerical simulation of liquid sloshing. Numerical simulation of internal medium sloshing during tank car braking is carried out. The best filling coefficient should be greater than 0.8, the maximum impact force of liquid density, braking acceleration and wall surface of tank car, the time when the first peak impact force appears is studied. The relationship between the critical factors such as the time of emergence of the second peak impact force, the time of levelling, and so on, and the optimum wave-proof plate is obtained. The maximum inclination angle of the two tank car design methods is calculated. (4) the installation of the anti-wave plate. To explore and compare the advantages and disadvantages of several types of wave-proof plates, and to improve and optimize the design of common wave-proof plates. It provides powerful theoretical and data support for the design of anti-wave plate of tank car. (5) two kinds of austenitic stainless steel tank car designed by GB150-2011 conventional design method and strain strengthening technique are compared and simulated. The simulation of medium sloshing under different working conditions is simulated. It is found that the lightweight austenitic stainless steel technology has little effect on the safety and stability of the mobile tank car, but it brings considerable social and economic benefits.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：U492.8
[Abstract]:This paper is mainly based on the relevant standards of "liquefied Gas Transport vehicle", "Safety Supervision Regulation of liquefied Gas vehicle Tank" and "Mobile pressure vessel" of ASME, and takes austenitic stainless steel tank truck filled with liquid as the research object. In this paper, a numerical simulation method is used to study the braking or turning of moving pressure vessel tankers, and the numerical simulation method of liquid sloshing on the free surface is mainly discussed. The impact of liquid sloshing on the wall of tank car and the design of anti-rocking plate in tank car were studied preliminarily. The influence of austenitic stainless steel lightweight technology on the safety and stability of mobile tank car and the social and economic benefits were analyzed and summarized. The work is as follows: (1) the main manufacturers of domestic car tank car were investigated. According to the relevant standards of "liquefied Gas Transport vehicle", "Safety Supervision Code for liquefied Gas vehicle Tank" and "Mobile pressure vessel" of ASME, the reasonableness of setting internal anti-wave plate of automobile tank car is open to question. The detailed shape and structure design and filling coefficient of the wave-proof plate have not been explained in detail. (2) the numerical simulation model and method are determined. The finite volume method and the simplified rigid body model are used to simulate the sloshing of horizontal cylindrical tank car with the aid of Fluent software, and the natural frequency of liquid medium sloshing is obtained. By comparing with the experimental data and some numerical solutions of the solid test in literature, the definition of free liquid surface using VOF (volume of finite) method is determined, and the 魏-蔚 model is selected. The UDF user-defined function is programmed to load the Fluent solver to create an unsteady acceleration module, which successfully realizes the simulation process of liquid sloshing of tank car braking. It provides a method and direction for further research. (3) numerical simulation of liquid sloshing. Numerical simulation of internal medium sloshing during tank car braking is carried out. The best filling coefficient should be greater than 0.8, the maximum impact force of liquid density, braking acceleration and wall surface of tank car, the time when the first peak impact force appears is studied. The relationship between the critical factors such as the time of emergence of the second peak impact force, the time of levelling, and so on, and the optimum wave-proof plate is obtained. The maximum inclination angle of the two tank car design methods is calculated. (4) the installation of the anti-wave plate. To explore and compare the advantages and disadvantages of several types of wave-proof plates, and to improve and optimize the design of common wave-proof plates. It provides powerful theoretical and data support for the design of anti-wave plate of tank car. (5) two kinds of austenitic stainless steel tank car designed by GB150-2011 conventional design method and strain strengthening technique are compared and simulated. The simulation of medium sloshing under different working conditions is simulated. It is found that the lightweight austenitic stainless steel technology has little effect on the safety and stability of the mobile tank car, but it brings considerable social and economic benefits.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：U492.8
【参考文献】
相关期刊论文 前10条
1 康宁;贾嘉;刘献栋;;基于神经网络液体横向晃动时罐体受力的预测[J];北京航空航天大学学报;2011年06期
2 蒋R
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