摘要
针对薄壁金属内衬碳纤维复合材料容器,采用网格理论设计和纤维发挥强度经验取值方法易导致容器实际爆破压力远远高于设计压力,纤维强度实际发挥率高于设计值的结果。本文主要分析其原因并提出解决途径和设计中的一些方法:一是可按纤维的实际复丝拉伸强度来进行复合材料工艺设计;二是可考虑计算内衬和树脂基体对容器结构强度的贡献量;三是可对纤维强度性能离散性高的材料进行分类管理;四是可通过开展等强度包络圈设计方法和封头部位的补强技术研究来改进。应用本文中的方法可以充分发挥复合材料容器纤维强度,降低成本,提高结构效率。
For carbon fiber composite vessel with thin-wall metal liner, the basis of netting theory and the expe- rience value method of developed fiber strength easily induce that practice burst pressure is far higher than design pressure, and developed percentage of fiber strength is higher than design value. The reason is mainly analyzed in the paper, solving approaches and some methods in design are presented. Firstly, composite technique is designed mainly based on practical fiber strength ; Secondly, load-bearing of liner and resin should be calculated ; Thirdly, fibers of vari- ous tensile strength are classified;Fourthly,iso-strength enveloped design method and reinforced dome technology can be adopted to improve the situation. The above measures are used in order to develop fiber strength of composite vessel sufficiently, to reduce cost and to increase structural efficiency.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2013年第5期78-80,共3页
Aerospace Materials & Technology
关键词
薄壁内衬
复合材料容器
纤维发挥强度
结构效率
Thin-wall liner, Composite vessel, Developed fiber strength, Structural efficiency
