摘要
采用有限元软件Abaqus建立T形管节点非线性有限元模型,分析主管预加轴力的T形管节点在冲击荷载作用下的抗冲击性能。经试验验证表明,模型准确可靠,可用于钢管结构抗冲击分析研究。通过分析主管预加轴力管节点的破坏模态,研究管节点截面变形发展、局部与整体变形、能量耗散等抗冲击性能指标,获得了T形方钢管节点在冲击荷载作用的失效机理,预加轴力增大管节点的变形,并降低了其承载能力。
A nonlinear finite element model was developed by using software ABAQUS to analyze the impact behavior of steel tubular T-joints with axially pre-loaded chord.The model was verified with test results,which showed that it was reliable with high accuracy to analyze the effect of axially pre-load on impact resistance of tubular joint.By analyzing the failure mode,the development of deformation,local and global deformations and energy dissipation,the failure mechanism of T-joints with axially preloaded chord was determined.The results showed that axially pre-load can increase the deformation of tubular joints and decrease the load carrying capacity.
出处
《中国科技论文》
CAS
北大核心
2017年第1期18-23,共6页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20130161110018)
教育部新世纪优秀人才计划项目(NCET-11-0123)
关键词
管节点
预加轴力
冲击
有限元
失效机理
tubular joints
axially pre-loaded
impact
finite element analysis
failure mechanism
