光伏玻璃压延成型过程的有限元分析

发布时间：2018-03-24 02:08

本文选题：光伏玻璃　切入点：压延成型　出处：《河南工业大学》2015年硕士论文

【摘要】：近年来太阳能光伏产业发展迅猛,而作为太阳能电池组件中一个重要新型配套产品—光伏玻璃,也随着光伏行业的发展而壮大。由于对玻璃成型的研究起步较晚,成型过程中玻璃传热情况比较复杂,对其进行解析求解很困难。所以,借助有限元方法来模拟玻璃压延成型的过程,研究玻璃压延成型时玻璃温度的变化规律以及玻璃的微观组织变化,为玻璃压延成型工艺的深入研究提供依据,并且对提高玻璃的生产效率和产品质量有重要的现实意义。本文对玻璃压延成型过程进行了数值模拟和实验研究。本文首先介绍了玻璃材料的物理性质,以及应用到玻璃压延成型数值模拟中的基本理论和方法;分析了玻璃成型过程中的传热学问题;考虑了光伏玻璃压延成型过程中温度对各物理参数的影响,对玻璃成型中的一些边界条件做了必要的假设,在此基础上建立了玻璃压延成型段的简化模型;以DEFORM-3D软件为基础,将玻璃成型段的有关数据设置到相应的边界条件中,模拟得出玻璃压延成型过程中玻璃的温度场、速度场的分布情况以及热通量变化对玻璃成型的影响,得出压延成型过程中玻璃的温度变化规律。其次,以晶粒的成核理论和玻璃析晶的范围为基础,使用晶粒模块对成型过程中玻璃的微观组织变化过程进行模拟,分析了冷却速度对玻璃结晶的影响。利用此方法可以很好地实现玻璃微观组织演变的可视化,对玻璃内部具体结构的进一步研究有重要的指导意义。最后,用检测工具对成型过程中的玻璃带表面温度进行检测,对模拟结果进行实验验证,从而验证模拟传热分析的正确合理性。
[Abstract]:In recent years, the solar photovoltaic industry has developed rapidly, and as an important new type of supporting product of solar cell modules, photovoltaic glass has also grown with the development of photovoltaic industry. The heat transfer of glass during forming is very complicated, so it is very difficult to solve it analytically. Therefore, the process of calendering and forming of glass is simulated by means of finite element method. The change of glass temperature and the microstructure of glass during calendering molding are studied, which provides the basis for the further study of the Calendering process of glass. It has important practical significance to improve the production efficiency and product quality of glass. In this paper, the calendering process of glass is numerically simulated and experimentally studied. Firstly, the physical properties of glass materials are introduced. The basic theories and methods applied to the numerical simulation of glass calender forming are also presented. The heat transfer problems in the process of glass forming are analyzed, and the effect of temperature on the physical parameters of photovoltaic glass during calendering molding is considered. Based on the necessary assumptions of some boundary conditions in glass forming, the simplified model of glass calendering section is established, and the relevant data of glass forming section are set up in the corresponding boundary conditions based on DEFORM-3D software. The temperature field, the distribution of velocity field and the influence of heat flux change on the glass forming process are obtained by simulation, and the temperature change law of the glass during the calendering process is obtained. Based on the nucleation theory of grain and the range of glass crystallization, the process of microstructure change of glass during forming process was simulated by using grain module. The effect of cooling rate on glass crystallization is analyzed. The visualization of glass microstructure evolution can be realized by using this method, and it is of great significance to further study the specific structure of glass. The surface temperature of the glass strip in the molding process was measured by means of testing tools, and the simulation results were verified by experiments to verify the correctness and reasonableness of the simulated heat transfer analysis.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.633

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