文中提出了一种三维药柱燃面退移计算近似算法,并用UG软件的二次开发功能执行此算法,达到了快速准确的获得药柱肉厚-燃面曲线的目的。UG二次开发通过MFC和UGAPI函数交叉使用实现,MFC制作对话框界面,UGAPI函数执行燃面退移算法。最后以某型号发动机装药为例,运用此方法和传统方法对比,验证了该方法的正确性和高效性。

In this paper, a new arithmetic of model's burning surface area was provided to fast and exactly get the areas-thickness curve. UG secondary development function was achieved through MFC and UGAPI, MFC produced dialog box, UGAPI function performed burning surface back-shift algorithm. At last, the arithmetic was applied in a solid rocket motor grain, through comparison between the method and traditional method, the new method was testified to be correct and effective.