双曲率开槽板精密成型有限元数值模拟

通过有限元数值模拟方法对双曲率开槽板的贴模性问题进行了系统研究.建立了开槽板在离散钉模上贴模性分析的有限元模型,研究了槽深、槽宽等开槽参数对面板型面精度的影响规律,其中相对槽深是影响开槽板贴模性的主要因素.通过分析计算确定了优化的开槽参数,为开槽方案的制定提供了可用的数据和重要依据.数值模拟和实验验证表明,工作板开槽可以解决紧缩场双曲率连续表面面板的胶接成型问题. 

Precise Forming Simulation of Notched Panels with Double Curvature

This paper systemic investigates the fitability of the notched panel with double curvature by FEM method. The FEM simulation model was established for analysing the fitability of the notched panels on discrete nails die. Further more,the effect trend of the notch parameters,such as deep and width,on the precision of the panels was analyzed. The most important factor is the relatively deep of notch. Optimize parameters of notch was found by simulation. It provide the solution for the precise forming of notched panels with double curvature. Both the simulation results and the experimental validation show that the notching technology can achieve the precise forming of doubly curved reflector panels with continuous surface.