基于网络理论的固体火箭发动机纤维缠绕壳体优化设计

Optimal Design of Solid Rocket Motor Filament-wound Case Based on Netting Theory

基于网络理论按爆破压强设计的纤维缠绕壳体基本方程,在结构、工艺等约束条件下,选取不同纤维材料,以壳体质量为目标,利用线性多步法和复合形法,优化设计纵向层平面缠绕、圆筒部分在环向缠绕的固体发动机纤维壳体的材料密度、纤维拉伸强度、缠绕角和极孔半径,并给出算例。计算表明,比强度是影响纤维壳体质量的最重要因素。

Based on filament-wound case basic equations, which were deduced with netting theory according to burst pressure, taking the structural sizes and the technological parameters as constraint conditions, taking the case mass as constraint object, the design variables were optimized, such as material density and strength, wind angle of case section, radius of polar hole, by a linear multi-step method and a complex. A numerical example was given. The calculated result indicates that specific strength is the most important factor, which affects mass of the case.