Integration of Complex Geometry Gun Propellant Form Function Calculation and Geometry Optimization,Propellants, Explosives, Pyrotechnics

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Integration of Complex Geometry Gun Propellant Form Function Calculation and Geometry Optimization
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2022-06-15 , DOI: 10.1002/prep.202200062
Moru Wang _{1,

2} , Guorui Jin _{1,

2} , Yongrong Zhou _{1,

2} , Fengqiang Nan _{1,

2} , Xiangyang Lin _{1,

2} , Weidong He _{1,

2}

Affiliation

To take full advantage of the additive manufacturing technology, an integrated and efficient approach of complex geometry gun propellant form function calculation and geometry optimization design based on Grasshopper (GH) software was proposed as a first attempt to obtain the closed-loop of geometric optimization forward design with performance as the goal and algorithm as the means. The burning surface regression simulation and form function calculation of the entire multi-perforation gun propellant family, multi-perforation web thickness uneven gun propellant family, mixed gun propellant charges were demonstrated by using the parametric model of GH software. With the highest combustion progressivity as the optimization objective, the genetic algorithm in GH software was used to geometrically optimize the parametric model of multi-perforation gun propellant family, and then the entire multi-perforation with ball gun propellant family was obtained. The closed vessel test result showed that the form function calculated by the GH approach was in better agreement with the test curve than that of the analytic method. The integral form function of the mixed gun propellant charges was calculated firstly and proved by the interior ballistic performance calculation. The combustion progressivity of rosette-shaped 19-perf with ball gun propellant was significantly improved compared with that before geometry optimization, with the ball-tube, ball-ball, and ball-ball-ball structure increasing by about 15.0 %, 17.7 %, and 17.7 %, respectively. The integrated and efficient approach was dynamically visualized in real-time and required no learning of conventional scripting-type programming, providing the basis for the design and application of gun propellant with any complex geometry.

中文翻译：

复杂几何火炮发射药形函数计算与几何优化的集成

为充分发挥增材制造技术优势，首次尝试基于Grasshopper(GH)软件的复杂几何火炮药形函数计算与几何优化设计集成高效方法，实现几何优化前向闭环。以性能为目标，以算法为手段的设计。利用GH软件的参数化模型，对整个多射孔炮发射药族、多射孔腹板厚度不均匀发射药族、混合炮装药的燃烧面回归模拟和形函数计算进行了论证。以最高的燃烧渐进性为优化目标，利用GH软件中的遗传算法对多射孔炮发射药族的参数模型进行几何优化，得到整个多射孔球炮发射药族。密闭容器试验结果表明，GH法计算的形函数与试验曲线的吻合度优于解析法。首先计算了混合火炮装药的积分形式函数，并通过内弹道性能计算证明了这一点。与几何优化前相比，带球炮推进剂的莲座形19孔的燃烧渐进性显着提高，球管、球-球、球-球-球结构分别提高了约15.0%、17.7%、和 17.7%，分别。

更新日期：2022-06-15

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