@article{ref1,
title="Attempt to improve the material utilisation and crashworthiness of grooved tube subjected to axial crushing",
journal="International journal of crashworthiness",
year="2021",
author="Yao, Ru-Yang and Zhao, Zhen-Yu and Yin, Guan-Sheng and Zhang, Bei",
volume="26",
number="1",
pages="77-86",
abstract="Grooved tube has proved to be an effective energy absorber due to its excellent controllability during axial crushing. In the present research, a novel energy absorber named two-stage grooved tube is proposed. Three approaches are put forward to improve the material utilisation of grooved tube by reducing the dimensions of thick-walled section. In addition, to enhance the stability and energy absorption performance, aluminium foam is filled in empty grooved tube. An analytical model for foam-filled grooved tube is established, and in which a semi-empirical constant to reflect the tube-foam interaction is determined by fitting test data. The experimental results show that the empty grooved tube with weak thick-walled section always generates non-axisymmetric mode, while the foam filling can significantly improve the structural stability by transiting the non-axisymmetric mode into axisymmetric mode. Foam filling can also obviously enhance the energy absorption performance of empty grooved tube with strong thick-walled section, and all foam-filled cases shows typical two-stage energy absorption characteristics. Moreover, reducing the thickness and length of thick-walled section both can improve the material utilisation of foam-filled grooved tube, while the latter can also significant enhance the energy absorption performance.<p /> <p>Language: en</p>",
language="en",
issn="1358-8265",
doi="10.1080/13588265.2019.1687162",
url="http://dx.doi.org/10.1080/13588265.2019.1687162"
}