【作者】 范平；

【导师】 陈明和；

【作者基本信息】 南京航空航天大学 ， 航空宇航制造工程， 2008， 硕士

【摘要】 热应力成形是加工板料的一种重要成形方法。传统的产生热应力方法是通过火焰或激光局部加热来实现的。由于火焰或激光局部加热存在着诸多局限性,因此本文研究了一种新的板料热应力成形技术——高频感应弯板成形工艺。该工艺利用高频感应加热来代替火焰加热或激光加热来进行板料热应力弯曲成形。论文的主要工作是开发高频感应弯板成形工艺的有限元预测模型及其试验装置,研究感应加热各参数对板料弯曲成形效果的影响规律。主要内容如下:(1)开发出高频感应弯板成形工艺的磁-热-结构多场耦合有限元预测模型。在给定工艺参数前提下,用开发的有限元模型能够预测板料弯曲变形结果。(2)设计了数控高频感应弯板成形试验机。此试验机可用于进行高频感应弯板成形试验和生产。(3)用设计的试验机进行了高频感应弯板成形试验研究,对有限元预测模型进行了验证,结果表明,有限元预测模型的预测精度是可以接受的,可用于指导生产。(4)通过有限元模拟和试验研究相结合的方法,得出了主要工艺参数对高频感应弯板成形效果的影响规律。更多还原

【Abstract】 Thermal stress forming is a important forming process of plate which is deformed. At present, the traditional approach to cause thermal stress is local heating by flame or laser. Due to a great deal of limitation of heating by flame or laser, a new thermal stress forming process——high frequency induction heating forming of plate is studied in this paper. This process heats by high frequency induction in place of flame or laser. Main research contents in this paper are developing the FEA model of high frequency induction heating forming of plate, and exploring laws of this process. Main research content as follows:(1) The multiphysics coupled FEA model of high frequency induction heating forming of plate has been developed. Under the condition of some certain technological parameters, forming results of plate can be predicted.(2) A experimental machine of high frequency induction heating forming of plate has been developed. This tester can be used for the experiment and production of high frequency induction heating forming of plate.(3) The reliability of FEA model has been verified by the experiment.(4) By means of the combined method of numerical simulation and experimental research,the laws that main process parameters impact on the bending angle of plate is gotten.更多还原