卫星用复合材料压力容器力学特性研究

Mechanical characteristic study of composite overwrapped pressure vessel for satellite application

为了研究航天复合材料压力容器内衬与复合材料双层壳体的力学特性,通过优化复合材料网格理论算法,针对钛合金内衬(TC4)/碳纤维(T1000GB)缠绕柱形复合材料压力容器进行了应力应变特性分析。以纤维预紧应力为自变量,研究其对内衬/纤维双层壳体在预紧压力、工作压力、验证压力和爆破压力下应力的影响,提出了优化设计的解析解法,指出内衬与复合层力学特性对容器性能的影响机理,为结构设计和同类产品设计提供了计算方法和理论指导。

It is important to study characteristics of liner and composite double shells and composite pressure vessel,the stress and strain characteristics of a TC-4 titanium liner/T1000 carbon fiber composite over-wrapped pressure vessel was analyzed by means of netting theory optimization.The influence of fiber stresses regarded as independent variables for the liner and composite double shell was studied at different pressure,such as zero pressure,working pressure.Test pressure and burst pressure,the vessel performance was influenced by the mechanical characteristics of the liner and composite shell and was summarized and the optimized analytical method was provided.It is a significant method for similar structure calculation and similar products optimizing design.