T型方钢管相贯节点轴压性能有限元研究与试验验证
Finite element analysis and experimental verification of axial properties of square hollow section T-joints
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摘要: 利用通用有限元软件ABAQUS对T型方钢管相贯节点进行了建模及非线性有限元计算.将试件的破坏模式、变形过程、极限承载力与试验进行了校核.研究结果表明:试件在轴向压力作用下,发生弦杆相贯面凹陷和侧壁鼓凸的现象;试件在加载全过程具有较强的变形能力;β值越小,试件的应力强化越时显,延性也越小;试件极限承载力随着β值的增大而增大;有限元模拟与试验吻合度较高.Abstract: A finite element model simulating the behavior of square hollow section (SHS) T-joints was established and nonlinear finite element was calculated by ABAQUS software.The failure mode,deformation process and ultimate capacity of SHS T-joints were validated by comparing with experimental results.The results showed that,under the effect of axial pressure,chord flange failure and web bulking failure occurred.The specimens have stronger deformation capacity during the whole loading process.As the value of β decreases,the stress strengthening and the ductility of specimens increase.As the value of β increasesd,the ultimate capacity increasesd.The finite element simulating is similar to the test result.
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Key words:
- SHS T-joints /
- finite element analysis /
- axial property
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