CAJ | 학술논문

为了直观而准确地支持固体火箭发动机药柱设计,提出了一种约束草图驱动的药柱三维特征造型方法.该设计方法首先通过变量化约束求解引擎对设计人员模糊的设计概念进行精确的几何坐标定位.形成一幅设计变量驱动的约束草图.然后,经过药柱特征定义,在设计规则和基于设计历史的燃面追溯统计算法的支持下,设计人员能够在约束草图上进行任意形式复杂药柱的特征定义、造型设计、燃面推移仿真与燃面统计.最后,开发了相应的药柱设计系统,并以一个管槽形药柱的设计过程,验证了本设计方法的计算效率、直观性、准确性和有效性.
위료직관이준학지지지고체화전발동궤약주설계,제출료일충약속초도구동적약주삼유특정조형방법.해설계방법수선통과변양화약속구해인경대설계인원모호적설계개념진행정학적궤하좌표정위.형성일폭설계변량구동적약속초도.연후,경과약주특정정의,재설계규칙화기우설계역사적연면추소통계산법적지지하,설계인원능구재약속초도상진행임의형식복잡약주적특정정의、조형설계、연면추이방진여연면통계.최후,개발료상응적약주설계계통,병이일개관조형약주적설계과정,험증료본설계방법적계산효솔、직관성、준학성화유효성.
In order to make solid rocket motor grain design more intuitive and accurate, a kind Of 3D feature design method of SRM grains driven by the variational constraint sketch was put forward. In the method, the variational constraint solver is used first to interpret the grain designers'ambiguous design concept into a kind of constraint sketch driven by design variables. Then, with the help of the specified grain feature definition, design rules and burning surface trace statistics algorithm baaed on design history, de-signers can freely finish feature definition, shape modeling, burning-surface regression simulation and statistics of complicated grain on the sketch. Finally, a grain design software platform was developed, and a slotted-tube grain design example was used to verify the efficiency, intuitive, accuracy and effectiveness of this grain design method.