航空学报 > 2002, Vol. 23 Issue (1): 55-58

缝纫层合板低速冲击损伤有限元分析

陈纲, 桂良进, 郦正能, 寇长河   

  1. 北京航空航天大学飞行器设计与应用力学系 北京 100083
  • 收稿日期:2001-01-02 修回日期:2001-05-08 出版日期:2002-02-25 发布日期:2002-02-25

FINITE ELEMENT ANALYSIS OF LOW-VELOCITY IMPACT DAMAGE OF STITCHED LAMINATES

CHEN Gang, GUI Liang-jin, LI Zheng-neng, KOU Chang-he   

  1. Department of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronatics and Astronatic, Beijing 100083, China
  • Received:2001-01-02 Revised:2001-05-08 Online:2002-02-25 Published:2002-02-25

摘要:

采用动态有限元素法,计算并研究了缝纫层合板在低速冲击下的损伤情况。研究结果表明 :缝纫后层间剪切强度的增加是缝纫层合板抗冲击分层性能改善的主要原因。试验结果也表明,模拟计算结果与试验结果具有良好的一致性。

关键词: 缝纫层合板, 动态有限元, 分层, 层间剪切强度

Abstract:

A dynamic finite element method is adopted to calculate and study the low velocity impact damage characteristics of stitched laminates. The results showed that the increase of interlaminar shear strength of stitched laminates contributed to the improvement of delamination resistance greatly. The comparison showed that the results determined by this method correlated well with the test results.

Key words: stitched laminat es, dynamic finite element method, delamination, interlaminar shear strength