不同半圆切深度对飞机复合材料长桁压缩性能作用  

STUDIES ON SEMI-CIRCLE DEPTH INFLUENCE ON COMPRESSIVE PROPERTIES OF COMPOSITE STRINGER OF AIRCRAFT

作　　者：张明星[1] ZHANG Ming-xing(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]中国商飞上海飞机设计研究院,上海201210

出　　处：《玻璃钢／复合材料》2018年第8期83-88,共6页Fiber Reinforced Plastics/Composites

摘　　要：制作了不同深度的中央翼半圆切长桁端头试验件,通过对轴向压缩测试,测得了整个试验件的载荷-应变曲线。试验结果表明:随着试验载荷的增加,试验件发生非线性变形,半圆切深度对破坏载荷影响显著,半圆切位置从紧固件处往内(半圆切深度变浅)移动,破坏载荷明显增大;从紧固件处往外(半圆切深度变大)移动,破坏载荷减小。长桁蒙皮区域最大应变出现在肋缘条和蒙皮连接的第一排钉附近。Semi-circle depth stringer end samples of center wing are made,and compression test is carried out.Load-strain curves under axial compression load were obtained. The results show that non-linear deformation appeared,and the failure load is greatly influenced by the semi-circle depth. Failure load increases with the semi-circle depth. The largest strain appears on the first row fasteners on the rib flange and skin.

关 键 词：半圆切 深度 压缩 破坏 

分 类 号：TB332[一般工业技术—材料科学与工程]