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屈曲模态对含缺陷复材加筋板后屈曲的影响

徐荣章 关志东 刘璐 张楠

徐荣章, 关志东, 刘璐, 等 . 屈曲模态对含缺陷复材加筋板后屈曲的影响[J]. 北京航空航天大学学报, 2014, 40(9): 1299-1304. doi: 10.13700/j.bh.1001-5965.2013.0605
引用本文: 徐荣章, 关志东, 刘璐, 等 . 屈曲模态对含缺陷复材加筋板后屈曲的影响[J]. 北京航空航天大学学报, 2014, 40(9): 1299-1304. doi: 10.13700/j.bh.1001-5965.2013.0605
Xu Rongzhang, Guan Zhidong, Liu Lu, et al. Effect of buckling mode on performance of post-buckled composite stringer-stiffened panels with debond[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(9): 1299-1304. doi: 10.13700/j.bh.1001-5965.2013.0605(in Chinese)
Citation: Xu Rongzhang, Guan Zhidong, Liu Lu, et al. Effect of buckling mode on performance of post-buckled composite stringer-stiffened panels with debond[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(9): 1299-1304. doi: 10.13700/j.bh.1001-5965.2013.0605(in Chinese)

屈曲模态对含缺陷复材加筋板后屈曲的影响

doi: 10.13700/j.bh.1001-5965.2013.0605
详细信息
    作者简介:

    徐荣章(1989-),男,云南曲靖人,硕士生,buaa_xrz@163.com.

  • 中图分类号: V257;TB330.1

Effect of buckling mode on performance of post-buckled composite stringer-stiffened panels with debond

  • 摘要: 某些结构类型的复合材料加筋板,由于一阶和二阶屈曲载荷十分接近,在压缩失稳时,相同的试验件会出现不同的失稳模态,并表现出明显不同的后屈曲承载能力。就此问题,进行了试验和数值模拟研究。轴压试验中,通过影像云纹法和超声C扫技术监测试验件的失稳模态及缺陷扩展情况,以确定不同失稳模态对相同试验件后屈曲承载能力的影响。基于ABAQUS软件建立有限元模型,采用虚拟裂纹闭合技术(VCCT,Virtual Crack Closure Technology)模拟含预置脱胶缺陷的筋条-蒙皮界面,将失稳波形以几何扰动的形式引入后屈曲分析。通过分析缺陷前缘应变能释放率,研究两种模态下缺陷扩展特性。计算结果与试验结果相吻合,研究表明两种模态下缺陷的扩展特性明显不同,导致该型加筋板在3个半波失稳模态下的后屈曲承载能力明显高于2个半波模态下的后屈曲承载能力。

     

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出版历程
  • 收稿日期:  2013-10-22
  • 网络出版日期:  2014-09-20

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