首页|梯度功能柱胞吸能材料准静态变形吸能性能试验研究

梯度功能柱胞吸能材料准静态变形吸能性能试验研究

扫码查看
通过万能试验机对梯度功能柱胞吸能材料进行了准静态压缩试验,研究了材料种类梯度配置、赤道半径梯度配置、极半径梯度配置、壁厚梯度配置 4 种不同芯层配置方式对梯度功能柱胞吸能材料变形规律和吸能性能的影响.结果表明,试样的变形吸能性能在压缩过程的前期主要受上层柱胞影响,后期主要受下层柱胞影响.均质柱胞吸能材料的上下层柱胞在整个变形过程差异较小,而梯度功能柱胞吸能材料都具有逐层变形、渐进吸能的特点.在准静态压缩荷载作用下,压缩 80%的情况下,由于所有试样的变形程度均较为充分,此时试样的吸能量主要受压溃力指标影响,压溃力指标越高,吸能量越高;反之,压溃力指标较小时,位移越大的试样,吸能量越高.
Experimental study on quasi-static deformation and energy absorption performance of gradient functional columnar cell energy absorbing materials
Quasi-static compression tests were conducted using a universal testing machine to investigate the de-formation rules and energy absorption performance of gradient functional columnar cell energy-absorbing materials.Four different core layer configurations,namely,material type gradient configuration,equatorial radius gradient configuration,polar radius gradient configuration,and wall thickness gradient configuration,were studied.The re-search indicates that the deformation and energy absorption performance of the specimens are primarily influenced by the upper layer cells in the early stages of the compression process,while in the later stages,they are mainly af-fected by the lower layer cells.Homogeneous columnar cell energy-absorbing materials exhibit relatively small differences between the upper-layer and lower-layer cells throughout the deformation process,whereas gradient functional columnar energy-absorbing materials show characteristics of layer-by-layer deformation and progressive energy absorption.Under quasi-static compression loading with a displacement of 80%,since the deformation lev-els of all specimens are sufficiently high,the energy absorption is mainly influenced by the compressive force in-dex.Higher compressive force indices result in higher energy absorption,while lower indices lead to larger dis-placements and higher energy absorption.

gradient functional columnar cellenergy absorbing materialquasi-static compressiondeformation ruleenergy absorption performance

张海韬、邓安仲、罗盛、谢安逸

展开 >

陆军勤务学院,重庆 401331

梯度功能柱胞 吸能材料 准静态压缩 变形规律 吸能性能

2024

防护工程
总参谋部工程兵科研三所

防护工程

影响因子:0.2
ISSN:
年,卷(期):2024.46(1)
  • 10