摘要
对两端简支的T型管节点支管受到圆柱形锤体冲击后的动力响应进行了数值分析,提出区分主管变形中局部凹陷变形和整体弯曲变形的方法,得到了冲击过程中2种变形的时程曲线以及与冲击力时程曲线变化的联系,并且得到了2种变形与冲击动能以及节点主管长径比之间的关系.数值分析结果表明:随着节点变形消耗的能量的增加,局部变形趋于稳定,变形的增长逐渐集中在整体变形上.
Numerical analysis is done for the dynamical response after the simple support T tubular joints is impacted by cylindrical hammer. A method to distinguish the local and global deformation is proposed. The relation between deformation history curve and impact force one is analized, as well as the relation between deformation and the impact energy and the ratio of length to diameter. The result turns out that with the energy absorbed by deformation of joint increasing, the local deformation tends to stability, and converge eventually a global deformation.
出处
《烟台大学学报（自然科学与工程版）》
CAS
2012年第2期140-145,共6页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
山东省高等学校科研技划项目(J11LE11)
关键词
T型管节点
冲击
变形
数值分析
T tubular joints
impact
deformation
numerical analysis
