摘要
航天发动机推力支架空间桁架结构通常采用金属材料。碳 /环氧复合材料用于这种空间桁架结构的主承力推力管可以显著减轻推力支架的重量。为了节约昂贵的实验费用 ,通常先对支架结构和重量进行优化设计。本文以橡胶芯模辅助RTM工艺制备的碳 /环氧管件为模型建立了某种结构优化后的推力支架空间桁架结构的有限元模型 ,采用大型有限元分析软件ANSYS7.0对推力管的外径、壁厚和重量进行了优化设计 ,得出推力管最佳参数为外径 7.8cm ,壁厚 2 .2 3mm ,总重 11.5 8kg。
The materials used in space truss structure of aerospace plane engine thrust bracket are usually alloys. When carbon/epoxy composite materials are employed to manufacture the space truss, the truss weight will be greatly reduced. In order to reduce the expensive cost of mechanical experiments, optimum design for bracket structure and weight is necessary. The carbon/epoxy tubes fabricated by rubber core mould assisted resin transfer molding (RTM) are employed to build the finite element model. Large-scale finite element analysis (FEA) software ANSYS7.0 is adopted to optimum design.The optimal external diameter of tubes is 7.8cm, wall thickness is 2.27mm and total weight is 11.58kg.
出处
《玻璃钢／复合材料》
CAS
CSCD
2003年第6期33-35,21,共4页
Fiber Reinforced Plastics/Composites
基金
国家 8 63项目基金资助 ( 2 0 0 2AA72 40 5 2 )
