摘要
碳纤维和铝合金作为两种新型材料,具有众多相似的优点。然而铝合金可焊性差,焊接热影响区强度降低显著,因此采用碳纤维布加固是一种有效的措施。探究了碳纤维布与铝合金的粘结性能,对不同粘结长度的碳纤维布加固铝合金试件进行了剪切试验研究和数值模拟分析,总结了碳纤维布加固铝合金的破坏模式和破坏机理.对碳纤维布应力分布规律进行了研究,得出了碳纤维布的有效粘结长度。
Aluminum alloy and CFRP are relatively new structural material,which share lots of common advantages.Because of the sharply decreased strength in heat-affected zone of aluminum alloy,it is one of the effective measures to use CFRP sheets for reinforcement.Shear experiments of 10 specimes of aluminum alloy reinforced with CFRP sheets with different bond lengths were carried out in this research.The finite element analyses were also conducted to find out the failure modes and bond mechanism between CFRP sheets and alunimum alloy.The results show the strain distribution characteristics and the effective bond length of the joint,which provides support for following-up study of aluminum alloy strengthened with CFRP.
出处
《结构工程师》
北大核心
2013年第5期144-149,共6页
Structural Engineers
基金
国家自然科学基金(50908168)
关键词
碳纤维布加固铝合金
剪切试验
数值模拟
粘结性能
aluminum alloy strengthened with CFRP sheets
shear experiment
numerical analysis
bond performance
