【摘要】 以FET 12 0 0数控蒙皮拉形机为对象 ,对数控蒙皮拉形过程有限元数值模拟系统STRETCHFORM前置处理的拉形机机构分析、运动反解以及数据接口等关键技术进行深入研究 ,开发了运动反解模块 ,克服了正向求解的不足 ,有效地解决了拉形过程CAE分析与数控设备控制 (CNC)的协调和高效结合这一技术关键。利用STRETCHFORM系统对进气道蒙皮进行“虚拟拉形” ,优化拉形钳口运动轨迹 ,并进行生产试验 ,取得了满意的结果。更多还原

【Abstract】 The research object of this thesis is the Loire FET-1200 numerically controlled transverse stretching machine which is manufactured by ACB Group (France). Analysis of mechanism, reverse solution of motion and data interface between the Complex Skin Stretch Forming Simulation System (STRETCHFORM) and its pre-processing (FEAA) are deeply researched. The module of the mechanism motion analysis is developed by reverse solution method, which covers the shortage of the previous obverse solution of motion. The coordination and effective combination between CAE analysis and the control of NC machine (CNC) is accomplished successfully. One typical aircraft skin component is simulated in the STRETCHFORM system. The optimized paths of jaws are carried out on the Loire FET-1200, and the result of the experiment is good.更多还原