Hybrid metal-composite conical tubes for energy absorption; theoretical development and numerical simulation

Shiravand, Ali; Asgari, Masoud

doi:10.1016/j.tws.2019.106442

Cited by 41 publications

(12 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameter CFE is determined as the ratio of

(P_{avg})

to (

P_{italicip}

) and it is calculated as follows:

CFE % = \frac{P_{avg}}{P_{ip}} \times 100 . (2)

Absorbed energy ( U ) is another essential parameter in the design of a crash box. It is the total work done by impacting an object on the structure to cause deformation 18,57 . Mathematically, it can be calculated using the following formula:

U = \int_{0}^{l_{\max}} P (l) d l . (3)

Specific absorbed energy ( SEA ) is the amount of energy absorbed in a unit mass within the effective stroke length 56 .…”

Section: Testingmentioning

confidence: 99%

See 1 more Smart Citation

Development of efficient energy absorption components for crashworthiness applications: An experimental study

Alshahrani

Sebaey

Hegazy

et al. 2022

Polymers for Advanced Techs

View full text Add to dashboard Cite

This work experimentally investigates the quasi‐static crush response and energy absorption of glass‐reinforced epoxy thin‐walled crash box filled with nano‐aluminum oxide (Al2O3). The effect of the triggering (45 ° edge chamfering) and the weight percentage (wt%) of Al2O3 on the crushing performance have been studied. Field emission scanning electron microscope (FE‐SEM) and energy‐dispersive X‐ray spectroscopy (EDX) were adapted to show the elemental composition of the fabricated samples' surfaces. To follow the fracture mechanism, visual inspection, and scanning electron microscope (SEM) were performed. Two‐parameter Weibull distribution function was employed to statistically analyze the experimental results. Failure probability curves were established to help the designers in selecting the suitable material for energy‐absorbing applications. Results indicated that for untriggered glass/epoxy composite crash boxes, the inclusion of 1, 2, and 3 wt% of nano‐Al2O3 leads to an increase of, respectively, 16.34%, 48.46%, and 68.70% in the absorbed energy (U). While there is a decrease of 32.72% in (U) when adding 4 wt% of nano‐Al2O3. An enrichment of 9.00%, 18.04%, 31.53%, and 11.30% in crush force efficiency (CFE) was reached by the inclusion of, respectively, 1, 2, 3, and 4 wt% of nano‐Al2O3. Triggering has a considerable effect on the crashworthiness parameters of the fabricated composite crash boxes. A decrease of 6.56%, 10.11%, 4.01%, 4.76%, and 11.62% in the initial peak load (Pitalicip), an enrichment of 34.10%, 26.06%, 26.77%, 18.08%, and 28.97% in (CFE) and an improvement of 36.43%, 31.32%, 29.27%, 12.99%, and 52.47% in (U) were reported for composite crash boxes filled with 0, 1, 2, 3, and 4 wt% of nano‐Al2O3. It is obvious that glass/epoxy triggered composite crash boxes filled with 3 wt% of nano‐Al2O3 are appropriate to be used as energy absorbing device employed in vehicles due to their enhanced energy absorbing capabilities.

show abstract

“…The parameter CFE is determined as the ratio of

(P_{avg})

to (

P_{italicip}

) and it is calculated as follows:

CFE % = \frac{P_{avg}}{P_{ip}} \times 100 . (2)

U = \int_{0}^{l_{\max}} P (l) d l . (3)

Specific absorbed energy ( SEA ) is the amount of energy absorbed in a unit mass within the effective stroke length 56 .…”

Section: Testingmentioning

confidence: 99%

“…It is the total work done by impacting an object on the structure to cause deformation. 18,57 Mathematically, it can be calculated using the following formula:…”

Section: Impact Loadingmentioning

confidence: 99%

Development of efficient energy absorption components for crashworthiness applications: An experimental study

Alshahrani

Sebaey

Hegazy

et al. 2022

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…17 Also, a new bi-tubular corrugated composite tube, consisting of inner and outer cylindrical and conical tubes is considered and studied numerically in axial and oblique crushing in order to achieve favorable crashworthiness parameters. 18 The crushing behavior of hybrid metal-composite conical tube under dynamic loading is studied by Shiravand and Asgari 19 and a theoretical solution for laminated composite conical tubes is developed.…”

Section: Introductionmentioning

confidence: 99%

A basic design for automotive crash boxes using an efficient corrugated conical tube

Moghaddam¹,

Kheradpisheh

Asgari

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

Self Cite

View full text Add to dashboard Cite

Frontal vehicle structure is of high importance through crash energy managements and crash boxes are the fundamental structural component for vehicle safety as well as after sales issues. Similar to many other vehicle components, the detail design of crash box is usually part of manufacture knowhow. However, some guide lines are always available. In this article a general procedure is introduced for designing of crash box with the aid of novel thin walled structures and according to conventional crash scenarios. The problem is followed through some basic steps. Firstly, the crash box idea is selected through a wide range of previous investigated elements and is packaged in a real bench vehicle. Then thanks to the protection provided by the new crash box on the other more expensive components (e.g. headlamp, cooling pack, etc.), the effectiveness of this element are acknowledged through the low speed offset crash. Further on the robustness of new proposed crash box is approved by high speed crash simulations. The quasi-static simulations implemented during the analyses are carried out by finite element explicit code (Abaqus) and the FE modeling and dynamic simulation through the next steps are also performed in ANSA and PAM CRASH respectively. Finally in addition to the general crash box design proposed procedure, the achieved results demonstrated that the corrugated conical thin walled tubes deforms in regular and rather stable shape under both axial and oblique loadings. They also produced a reasonable reaction force versus deformations which leads to stiff and crashworthy energy absorber in comparison to traditional rectangular and even some special models like as origami shapes, and so they could be a valuable selection for crash box implementations in passenger cars.

show abstract

“…Although carbon fiber has obvious characteristics of light weight and high strength compared with metal, it has high raw material and process cost and is prone to brittle failure under overload conditions, so that more researchers focus on the research of metal‐carbon fiber mixed components. [ 27–31 ] Based on this, the Al‐CFRP hybrid tube is taken as research of object in this paper. The energy absorption characteristics and deformation mechanism under quasi‐static radial compression are analyzed by experimental, theoretical, and simulated methods.…”

Section: Introductionmentioning

confidence: 99%

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Zha

et al. 2020

Polymer Composites

View full text Add to dashboard Cite

To take into account the lightweight and collision safety of the energy absorber, metal-composite hybrid thin-walled tubes have been widely studied, which combine the low-cost metal and high-strength composites. Therefore, the deformation mechanism and the characteristics of the carbon fiber reinforced plastic wound thin-walled aluminum tube (Al-CFRP) were investigated under radial compression condition. Firstly, aluminum tubes, CFRP tubes, and four winding angles of Al-CFRP hybrid tubes (27 , 45 , 74 , 90) are experimentally analyzed. The contrastive results show that the stability and energy absorption of the Al-CFRP hybrid tube are improved and the winding angle is one of the important factors that affects the radial compression performance of the hybrid tube. And then based on the hybrid model, some theoretical relations are derived to forecast the initial collapse force and energy absorption quickly. The theoretical analysis shows that the radial force on the hybrid tube during the compression is also dependent on the thickness ratio of Al-CFRP layers complicatedly except the winding angle. Therefore, the effects of the winding angle (0-90) and thickness ratio of Al-CFRP layers (0.25-3.5) on the radial compression performance are investigated. The theoretical predication results show that the hybrid with the winding angle of 90 and thickness ratio of Al-CFRP layers of 0.25 performs over six times of the initial collapse force than the Al tube. Finally, the simulated model based on ANSYS and LS-DYNA is established to explain the reason for the better radial compression performance (A5C10S90) and the deformation mechanism of the hybrid tube, through the stress analysis of inner Al tube, inner CFRP layer, and outer CFRP layer, respectively. It is found that the Al-CFRP hybrid tube (especially 90) under radial compression shows better bearing capacity which represents the higher initial collapse force, total energy absorption and specific energy absorption, due to the supporting of the inner Al tube and the protection of the outer CFRP tube.

show abstract

Hybrid metal-composite conical tubes for energy absorption; theoretical development and numerical simulation

Cited by 41 publications

References 51 publications

Development of efficient energy absorption components for crashworthiness applications: An experimental study

Development of efficient energy absorption components for crashworthiness applications: An experimental study

A basic design for automotive crash boxes using an efficient corrugated conical tube

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Contact Info

Product

Resources

About