摘要
与金属材料相比,复合材料具有更高的比强度和比模量,从美国等水下科技强国的设备来看,碳纤维复合材料是制作深海用耐压舱的重要途径。但是,目前国内尚无成熟的复合材料耐压舱设计方法和规范,因此本文以水下1000 m级复合材料耐压舱为例,采用经验公式对其进行壁厚估算,然后基于ANSYS有限元分析软件对耐压舱进行强度校核和稳定性分析,最终通过外压性能测试对复合材料耐压舱进行验证。研究发现,对于薄壁圆筒型复合材料耐压舱,其破坏模式为失稳破坏,本文采用的经验公式可用于薄壁复合材料耐压舱的工程应用设计。
Compared with metallic materials,composite materials have higher specific strength and specific modulus.According to equipment from the United States and other underwater technology powerhouses.Carbon fiber composite materials are an important way to make pressure-resistant cabins for water gliders.However,at present,there is no mature design method and specification for composite pressure tanks in China.Therefore,this paper takes an underwater 1000 m class composite pressure tank as an example,estimates its wall thickness using empirical formulas,and then uses ANSYS finite element analysis software.The strength check and stability analysis of the pressure-resistant tanks were performed,and finally the composite pressure-resistant tanks were verified by external pressure performance tests.It is found that the failure mode of thin-walled cylindrical composite pressure-resistant tanks is instability.The design should focus on the critical external pressure strength at the time of instability.The empirical formula used formula used in this paper can be used for thin-walled composite pressure-resistant tanks engineering application design.
作者
王鹏飞
江亚彬
宋江
谭智铎
WANG Peng-fei;JIANG Ya-bin;SONG Jiang;TAN Zhi-duo(Beijing Composite Materials Co,Ltd.,Beijing 102101,China;Shenyang Institute of Automation Chinese Academy of Sciences,Shenyang 110169,China)
出处
《复合材料科学与工程》
CAS
北大核心
2020年第11期49-53,共5页
Composites Science and Engineering
基金
特种纤维复合材料国家重点实验室应用基础性研究项目(YJ2017SYS03)。
