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首页> 外文期刊>Thin-Walled Structures >Energy absorption improvement of circular tubes with externally press-fitted ring around tube surface subjected under axial and oblique impact loading
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Energy absorption improvement of circular tubes with externally press-fitted ring around tube surface subjected under axial and oblique impact loading

机译：承受轴向和斜向冲击载荷的圆管的外表面有压配合环的圆形管的能量吸收改善

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摘要

The dynamic axial and oblique crushing of circular tubes with externally press-fitted ring around the outer tube surface was investigated numerically using the Abaqus/explicit finite element simulation tool. The study shows how the reinforcement of ring strips fitted around the tube surface have the potential of improving the energy absorption capacity. Crashworthiness parameters such as the mean and peak crushing force, Crush Force Efficiency and specific energy absorption were evaluated for different tube profiles. Effect of slenderness ratio and tube thickness on the collapsed mode and crashworthiness parameters were examined by increasing the number of rings around the tube surface with different ring thicknesses. New collapsed modes were obtained as the ringed circular steel tubes were subjected to dynamic axial and oblique compression. The results obtained from the ringed tubes showed a reasonable percentage increase in the total energy absorption as compared to the conventional circular tubes without rings.
机译：使用Abaqus / explicit有限元模拟工具，对在外管表面周围带有外部压配合环的圆形管的动态轴向和斜向破碎进行了数值研究。研究表明，安装在管表面周围的环带加强件如何具有提高能量吸收能力的潜力。针对不同的管材轮廓评估了耐撞性参数，例如平均和峰值破碎力，破碎力效率和比能量吸收。通过以不同的环厚度增加管表面周围的环数，检查了细长比和管厚度对塌陷模式和耐撞性参数的影响。当环形环形钢管受到轴向和斜向动态压缩时，获得了新的塌陷模式。与没有环的常规圆形管相比，从环形管获得的结果显示出总能量吸收的合理百分比增加。

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