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材料导报  2019, Vol. 33 Issue (Z2): 215-221    
  无机非金属及其复合材料 |
民机复合材料帽型长桁压缩承载力分析与试验
张绪, 冯瑞, 张晔, 郭卫, 刘富
上海飞机设计研究院,上海 201210
Compression Strength Analysis and Test of CFRP Hat-stringer on Civil Aircraft
ZHANG Xu, FENG Rui, ZHANG Ye, GUO Wei, LIU Fu
Shanghai Aircraft Design and Research Institute, Shanghai 201210
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摘要 为了验证民机复合材料帽型长桁压缩承载力分析方法的合理性,设计了某碳纤维复合材料单向带预浸料和织物预浸料混合铺层组成的帽型长桁结构试验件并对其进行了压缩承载力试验。试验结果表明,随着载荷的增加,长桁帽底蒙皮和帽腰、帽脚发生局部屈曲,进而使长桁发生压损破坏。分别利用工程计算方法和有限元分析方法计算长桁的初始屈曲载荷和压损强度。工程分析方法得到的计算结果小于试验结果,保守量分别为37.5%和27.6%;有限元分析得到的初始屈曲载荷和压损强度与试验结果均较接近,误差分别为1.4%和2.3%;对比分析表明,复合材料帽型长桁压缩承载力的工程分析方法较为保守,可保证结构设计的安全性。
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张绪
冯瑞
张晔
郭卫
刘富
关键词:  碳纤维复合材料  帽型长桁  局部屈曲  压损    
Abstract: In order to verify compression strength analysis method of CFRP hat-stringer on civil aircraft, a set of CFRP hat-stringer test articles layered from unidirectional tapes and fabric prepregs for compression tests were manufactured. As the compression load increased, local buckling appeared at the stringer bottom, wrest and foot skin with the load-strain curves diverging obviously. Then the compression load increased until the stringer crippled. Classical engineering analysis method and finite element modeling (FEM) method were both used to estimate the initial local buckling load and the crippling load. The loads computed via engineering analysis method were less than the test mean value with 37.5% and 27.6% deviation respectively. While the loads via FEM were close to the test mean value only with 1.4% and 2.3% deviation respectively. It was shown that, the engineering method for CFRP hat-stringer initial buckling and crippling loads calculation was more conservative to make sure that the structural design was safe enough.
Key words:  carbon fiber reinforced plastic (CFRP)    hat-stringer    local buckling    crippling
               出版日期:  2019-11-25      发布日期:  2019-11-25
ZTFLH:  V258  
通讯作者:  345552710@qq.com   
作者简介:  张绪,2009年6月毕业于南京航空航天大学,获得工程力学专业硕士学位。自2009年7月起就职于上海飞机设计研究院强度设计研究部,目前主要从事复合材料飞机结构的强度分析与试验验证工作。
引用本文:    
张绪, 冯瑞, 张晔, 郭卫, 刘富. 民机复合材料帽型长桁压缩承载力分析与试验[J]. 材料导报, 2019, 33(Z2): 215-221.
ZHANG Xu, FENG Rui, ZHANG Ye, GUO Wei, LIU Fu. Compression Strength Analysis and Test of CFRP Hat-stringer on Civil Aircraft. Materials Reports, 2019, 33(Z2): 215-221.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2019/V33/IZ2/215
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