Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (5): 120-128.doi: 10.3969/j.issn.1000-565X.2017.05.017

• Mechanics • Previous Articles     Next Articles

Dynamic response and Damage Prediction of Composite Stiffened Panel Under Hail Impact

ZHANG Xiao-qing DING Tie LONG Shu-chang YAO Xiao-hu   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2016-08-17 Revised:2016-11-09 Online:2017-05-25 Published:2017-04-01
  • Contact: 张晓晴( 1974-) ，女，教授，博士生导师，主要从事复合材料力学和冲击动力学研究． E-mail:tcqzhang@scut.edu.cn
  • About author:张晓晴( 1974-) ，女，教授，博士生导师，主要从事复合材料力学和冲击动力学研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China( 11372113， 11472100)

     

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Abstract: In order to discover the damage characteristics of composite stiffened panel under hail impact,firstly,a finite element model of composite stiffened structure is established in light of Abaqus.Secondly,the process of hail impact is simulated by means of smooth particle hydrodynamic approach.Then,the influences of impact location,impact energy and impact angle on the dynamic response of composite stiffened panels are analyzed.Moreover,the panel damage and the delamination between panel and stiffener are also discussed.Finally,a comparison between the numerical results and the experimental ones is made to verify the accuracy of the proposed finite element model.It is found that,among various damage forms,tensile damage of the matrix and delamination damage between the panel and the stiffener are most significant; and that,when the impact point is at the edge of stiffener,the delamination damage between the panel and the stiffener becomes the most serious.

Key words: composite stiffened panel, hail, impact, dynamic response, damage, finite element model

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