@article{ref1,
title="Crashworthiness investigation of bitubal columns reinforced with several inside ribs under axial and oblique impact loads",
journal="Proceedings of the Institution of Mechanical Engineers, Part D: Journal of automobile engineering",
year="2018",
author="Pirmohammad, Sadjad and Nikkhah, Hamid",
volume="232",
number="3",
pages="367-383",
abstract="This paper deals with the crashworthiness capability of newly designed bitubal columns with different polygonal cross-sections (i.e. triangular, square, hexagonal, octagonal, decagonal and circular) reinforced with several inside ribs. A large number of finite element analyses were performed on these columns under axial and oblique impact loads using LS-DYNA to find the crashworthiness indicators. These columns were studied with five different size ratios (the ratios of the perimeter a of the inner tube to the perimeter b of the outer tube), namely a/b = 0, 0.25, 0.5, 0.75 and 1. A decision-making method, which in this case is the technique for ordering preferences by similarity to the ideal solution, was then employed to select the better columns which possessed a higher energy absorption and a lower peak force. The bitubal columns with size ratios a/b of 0.5, 0.25 and 0.75 were generally found to be the best cases. Furthermore, the multi-cell columns with the decagonal and octagonal cross-sectional shapes were selected as the best energy absorbers.<p /> <p>Language: en</p>",
language="en",
issn="0954-4070",
doi="10.1177/0954407017702986",
url="http://dx.doi.org/10.1177/0954407017702986"
}