摘要
金属管外壁用碳纤维缠绕复合后,其承受横向与轴向压载荷的能力均茯得了明显的提高。尤其是细长管缠绕碳纤维后,对轴向压载荷的抗弯曲变形及抗压极限承载能力都有大幅度的提高。本文介绍了硬 Al 合金(LY-11Al 合金)圆管在外壁缠绕复合碳纤维前后承受压载能力的实验数据的对比,以及对未经缠绕复合的承压管的理论临界压力进行探讨,分析了缠绕碳纤维能提高承载能力的原因。
The axial and lateral compressive resistance of aluminium alloy tube are in-creased obviously after the winding of carbon fiber on its external surface.Especially for thetube with large length-to-radius ratio,its flexural resistance under axial load and itscompressive resistance after flexural deformation are all improved obviously.The experimentalcomparison was made between circular tubes of LY-11(solid aluminium alloy)with and with-out the external winding of carbon fiber.A theoretical critical compressive strength of circulartube without external winding was presented.Finally,the strengthen mechanism of externalwinding was also analysed.
基金
国家自然科学基金
9590015
关键词
承压管
临界
载荷
碳纤维
铝
compression-bearing tube
critical load
fiber composites
