摘要
通过理论分析和数值模拟研究了碳纳米管的力学性能参数和其在轴向压缩以及弯曲荷载作用下的屈曲行为,并进行了用碳纳米管提高水泥基复合材料强度和韧性等力学性能的实验.结果表明:当好的分散效果被获得后,水泥基复合材料的强度和韧性可以得到明显的改善,而碳纳米管容易发生屈曲的特性是影响其作为理想增强材料的一个内在原因.
The elastic parameters of carbon nanotubes are estimated through theoretical analysis,and their buckling behavior under axial compression and bending are studied with the developed meshfree method.Experiments are carried out to investigate the application of carbon nanotubes in improving the strength and toughness of cement materials.It is shown that the strength and toughness of cement materials can be well enhanced when the good dispersion of carbon nanotube is obtained,however the buckling phenomenon is a negative factor in being used as reforcement.
出处
《中原工学院学报》
CAS
2011年第2期1-4,21,共5页
Journal of Zhongyuan University of Technology
基金
国家自然科学基金项目(10902129)
河南省自然科学基金项目(092300410177)
河南省教育厅自然科学基金项目(2010B130002)
关键词
碳纳米管
强度
韧性
水泥基材料
carbon nanotubes
strength
toughness
cement materials
