复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (7): 22-27.DOI: 10.19936/j.cnki.2096-8000.20210728.004

• 基础研究 • 上一篇    下一篇

复合材料T型加筋壁板后屈曲承载能力研究

崔勇江, 王斌团, 赵占文   

  1. 航空工业第一飞机设计研究院,西安710089
  • 收稿日期:2020-11-02 出版日期:2021-07-28 发布日期:2021-08-04
  • 作者简介:崔勇江(1995-),男,硕士,研究方向为飞机复合材料结构强度设计,2272393252@qq.com。

Research on the post-buckling bearing capacity of T-type composite stiffened panel

CUI Yong-jiang, WANG Bin-tuan, ZHAO Zhan-wen   

  1. The First Aircraft Institute, Aviation Industry Corporation of China, Xi'an 710089, China
  • Received:2020-11-02 Online:2021-07-28 Published:2021-08-04

摘要: 为了研究飞机复合材料T型加筋壁板结构在轴压载荷下的承载能力,对复合材料T型加筋壁板进行了轴压试验,并使用工程算法和有限元法仿真进行了分析,得到了加筋板的屈曲载荷及破坏载荷、载荷-位移曲线及损伤演化过程。对比两种分析方法与试验结果可以得到:当复合材料加筋壁板屈曲后,还有较强的后屈曲承载能力;相对于有限元分析方法,工程算法误差更大;准静态法可以有效地模拟出加筋板的屈曲及后屈曲行为,但是计算代价相对较大。

关键词: 复合材料, 加筋壁板, 有限元, 后屈曲, 破坏载荷

Abstract: In order to study the post-buckling bearing capacity of T-type composite stiffened panel under compression load, calculation of engineering algorithm, finite element method and compression test are used for composite stiffened panel. The buckling load and failure load, load-displacement curve and damage evolution of composite stiffened panel are obtained. By comparing the two methods and test results, some conclusions can be obtained. There is a strong post-buckling bearing capacity after buckling. Compared with the finite element method, the error of engineering algorithm is larger. The quasi-static method can effectively simulate the buckling and post-buckling behavior of stiffened panel, but the calculation cost is relatively large.

Key words: composite materials, stiffened siding, finite element, post-buckling, breaking load

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