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复合材料夹芯板低速冲击后弯曲及横向静压特性
引用本文:程小全,寇长河,郦正能.复合材料夹芯板低速冲击后弯曲及横向静压特性[J].复合材料学报,2000,17(2):114-118.
作者姓名:程小全  寇长河  郦正能
作者单位:1.北京航空材料研究院, 北京 100095;
基金项目:航空基础科学基金!资助项目 (96 B510 17)
摘    要:对低速冲击后的复合材料Nomex 蜂窝夹芯板进行了纯弯曲和准静态横向压缩实验, 用X 光技术、热揭层技术和外观检测等对板内的损伤进行测量, 分析了被冲击面在受压情况下蜂窝夹芯板的弯曲破坏特点, 对比了横向静压与低速冲击所造成的板内损伤, 讨论了不同横向压缩速度时接触力P-压入位移$h 的变化规律和损伤情况。结果表明: 低速冲击可使蜂窝夹芯板的弯曲强度大幅度降低; Nomex 蜂窝夹芯板对低速冲击不敏感。 

关 键 词:蜂窝夹芯板    低速冲击    损伤    弯曲    准静态横向压缩
文章编号:
收稿时间:1998-10-30
修稿时间:1999-02-10

BEHAVIOR OF BENDING AFTER LOW VELOCITY IMPACT AND QUASI-STATIC TRANSVERSE INDENTATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS
CHENG Xiao-quan,KOU Chang-he,LI Zheng-neng.BEHAVIOR OF BENDING AFTER LOW VELOCITY IMPACT AND QUASI-STATIC TRANSVERSE INDENTATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS[J].Acta Materiae Compositae Sinica,2000,17(2):114-118.
Authors:CHENG Xiao-quan  KOU Chang-he  LI Zheng-neng
Affiliation:1.Beijing Institute of Aeronautical Materials, Beijing 100095;2.Dept. of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083
Abstract:Pure bending tests after low velocity impact and quasi static transverse indentation tests were carried out on composite Nomex honeycomb core sandwich panels. Methods of X ray, deply and visual inspection were used to measure the damage in specimens. Bending failure behavior was studied on the sandwich panels, in which the impacted face sheet was compressed and another face sheet tensioned. The damage caused by transverse indention was compared with that by low velocity impact. The damage and rules of contact force P against indent displacement Δ h were discussed at different transverse indent speeds. Results showed that the bending strength of honeycomb core sandwich panels was reduced extensively by low velocity impact and that the Nomex honeycomb core sandwich panels were not sensitive to transverse indent speed.
Keywords:honeycomb core sandwich panels  low velocity impact  damage  bending  quasi  static transverse indention
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