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Crashworthiness of Foam-Filled and Reinforced Honeycomb Crash Absorbers in Transverse Direction
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Document Title
Crashworthiness of Foam-Filled and Reinforced Honeycomb Crash Absorbers in Transverse Direction
Author
Nicoud G. Ghasemnejad H. Srimanosaowapak S. Watson J.W.
Affiliations
School of Aerospace Transport and Manufacturing (SATM) Cranfield University Cranfield MK430AL United Kingdom; National Metal and Materials Technology Center (MTEC) Pathum Thani 12120 Thailand; Cranfield Impact Centre (CIC) Cranfield MK43 0AL United Kingdom
Type
Article
Source Title
Applied Composite Materials
ISSN
0929189X
Year
2023
Open Access
All Open Access Hybrid Gold
Publisher
Springer Nature
DOI
10.1007/s10443-023-10181-1
Abstract
Honeycomb crash absorbers have been widely studied as energy absorption devices for use in automotive industries. However none of these investigations have studied the side impact of empty and foam-filled honeycomb absorbers and adding stiffeners between the different layers of the corrugated sheets which are composing the honeycomb structure to analyse the structure under transverse (L-direction) impacts. In this paper the foam-filled and reinforced honeycomb crash absorbers are investigated under axial (T) and transverse (L) loading directions. Experimental results for both empty and foam-filled specimens under quasi-static and impact loads were implemented to validate the developed finite element model. Finite element analysis (FEA) was performed to find out the crashworthiness behaviour of the structure under axial and transverse impacts according to road conditions. Finally a new design of stiffened honeycomb crash absorber was developed and investigated to reduce the level of acceleration experienced by the passengers during the crash event. In this regard it is concluded that all the requirements related to the energy absorption capabilities and generated deceleration under impact loading can be met by introducing an advanced method to reinforce honeycomb absorbers using stiffeners. It is also proven that the thickness of these stiffeners will not significantly influence the force levels. Due to increase of wall thickness from 1 to 3 mm the mean crushing force increased from 129 kN to 148 kN. This growth is not sufficient as the goal is to obtain a mean crushing force of 300 kN. Thickening the stiffeners would lead to a loss of efficiency of the structure as the small increase in mean force would not make up for the gain in mass. Thus increasing the corrugated sheet� thickness becomes necessary. ? 2023 Crown.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY
Rights
Crown
Publication Source
WOS