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ENERGY ABSORPTION PROPERTIES OF AXIALLY LOADED METAL CIRCULAR TUBE UNDER IMPACT LOAD
In order to study the mechanical behavior and energy absorption characteristics of a metal circular tube with axial pre-compression under axial impact load. The finite element analysis was carried out based on Abaqus. A circular tube whoseR/t value is 15 was studied. At the same time,considering the influence of the initial geometric imperfections,the initial geometric deformation caused by pre-loading and boundary conditions,the corresponding control group was established in the finite element simulation. The simulation results are concluded as follows:（ 1） The deformation mode of the fixed end simply supported is more complex than the clamped case. Energy absorption characteristics and the corresponding deformation modes have a great relationship. When the asymmetric fold is more,the energy absorption characteristic becomes worse.（ 2） Initial geometric imperfections can induce circular tubes to produce non-axisymmetric folds,while the axial pre-compression tube is less sensitive to initial geometric imperfections,and the smaller pre-loading can counteract the effects of initial geometric imperfections.
ENERGY ABSORPTION PROPERTIES OF AXIALLY LOADED METAL CIRCULAR TUBE UNDER IMPACT LOAD
In order to study the mechanical behavior and energy absorption characteristics of a metal circular tube with axial pre-compression under axial impact load. The finite element analysis was carried out based on Abaqus. A circular tube whoseR/t value is 15 was studied. At the same time,considering the influence of the initial geometric imperfections,the initial geometric deformation caused by pre-loading and boundary conditions,the corresponding control group was established in the finite element simulation. The simulation results are concluded as follows:（ 1） The deformation mode of the fixed end simply supported is more complex than the clamped case. Energy absorption characteristics and the corresponding deformation modes have a great relationship. When the asymmetric fold is more,the energy absorption characteristic becomes worse.（ 2） Initial geometric imperfections can induce circular tubes to produce non-axisymmetric folds,while the axial pre-compression tube is less sensitive to initial geometric imperfections,and the smaller pre-loading can counteract the effects of initial geometric imperfections.
ENERGY ABSORPTION PROPERTIES OF AXIALLY LOADED METAL CIRCULAR TUBE UNDER IMPACT LOAD
HONG Xiang (author) / YAO Song (author) / GUO XingXing (author)
2018
Article (Journal)
Electronic Resource
Unknown
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