Energy absorption of multi-cell stub columns under axial compression

Zhang, Xiong; Zhang, Hui

doi:10.1016/j.tws.2013.03.014

Cited by 286 publications

(61 citation statements)

References 17 publications

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“…The principle ways of destroying tubes include lateral compression [7][8][9][10][11], lateral indentation [12][13], axial crushing [14][15][16], tube inversion [17], and tube splitting [18].…”

Section: Introductionmentioning

confidence: 99%

Crush analysis and multi-objective optimization design for circular tube under quasi-static lateral loading

Baroutaji

Gilchrist

Smyth

et al. 2015

Thin-Walled Structures

152

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Abstract:This paper addresses the energy absorption behaviour and crashworthiness optimisation of short length circular tubes under quasi-static lateral loading. Finite element (FE) models were developed using implicit FE code ANSYS to simulate the deformation behaviour and energy absorption of circular tube under lateral loading.These FE models were validated using experimental techniques to ensure that they can predict the responses of circular tube with sufficient accuracy. Response Surface Methodology (RSM) for design of experiments (DOE) was used in conjunction with finite element modelling to evaluate systematically the effects of geometrical parameters on the energy absorption responses of laterally crushed circular tubes.Statistical software package, Design-Expert, was used to apply the response surface methodology (RSM). The energy absorbing responses (specific energy absorbing capacity (SEA) and collapse load (F)) were modelled as functions of geometrical factors (tube diameter, tube thickness, and tube width). These developed functions allow predictions of the energy absorption response of laterally crushed tubes, based on their geometry parameters. Based on DOE results, parametric studies were conducted to generate design information on using the laterally crushed tubes in energy absorbing systems. Finally, the approach of multi-objective optimization design (MOD) was employed to find the optimal configuration of the proposed energy absorption structures.Design-Expert software, which employs the desirability approach as optimization algorithm, was used for solving the MOD problem.

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Section: Introductionmentioning

confidence: 99%

Crush analysis and multi-objective optimization design for circular tube under quasi-static lateral loading

Baroutaji

Gilchrist

Smyth

et al. 2015

Thin-Walled Structures

152

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“…The circular stepped tubes and stiffeners are made of aluminum alloy AA6060-T4 with the following mechanical properties (Santosa et al, 2000) ,as listed in Moreover, σo =126.5 MPa is the dynamic flow stress, and is taken as the average of tensile yield stress and ultimate tensile stress (Zhang and Zhang, 2013). Aluminum alloy AA6060-T4 exhibit only slight sensitivity to the strain rate, and could be modelled as rate-insensitive with good accuracy.…”

Section: Latin American Journal Of Solids and Structures 14 (2017) 29mentioning

confidence: 99%

A New Configuration of Circular Stepped Tubes Reinforced with External Stiffeners to Improve Energy Absorption Characteristics Under Axial Impact

Zahran

Xue

Esa

et al. 2017

Lat. Am. j. solids struct.

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State-of-the art studies of impact crushing circular stepped tube (inversion tube) introduce various approaches to improve the energy absorption capacities. Adding external longitudinal stiffeners on the circular stepped tubes is a new approach that have a great effect and interest. In the current study, finite element analysis using (LS-DYNA/WORKBENCH ANSYS) is performed on a series of numerical models of aluminum circular stepped tubes that are externally stiffened by a constant number of longitudinal stiffeners distributed around the cross section of the circular stepped tube. The numerical models are implemented under an axial impact crushing scenario. Furthermore, a new improved formula for prediction of steady inversion load is proposed. The theoretical predictions are found to be in good agreement with the numerical results with an error within 12%. A comparative study is conducted to compare the energy absorption characteristics and inversion mechanism between the newly proposed tubes and the conventional stepped tube. The results showed that addition of external longitudinal stiffeners on circular stepped tubes could imply greatest improvement for the energy absorption up to 104%, specific energy absorption capability (energy absorption per unit mass) up to 54.9%, the crush force efficiency up to 40.3% and increase the inversion stroke length in comparison with the unstiffened circular stepped tubes. A newfound role of external longitudinal stiffeners added to the stepped tubes that controls the inversion and deformation mechanism is presented.

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“…Compared to singlecell columns, the multi-cell thin-walled structures have drawn increased attention for their excellent energy absorption capacity. Zhang and Zhang (2013) investigated six single-cell and multi-cell structures using both experimental and numerical methods. They found that the energy absorption efficiency of multicell columns was significantly higher than single-cell columns.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness design of horsetail-bionic thin-walled structures under axial dynamic loading

Xiao

Yin

Fang

et al. 2016

Int J Mech Mater Des

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Bio-inspired engineering design has drawn increased attention in recent years for the excellent structural and mechanical properties of the biological systems. In this study, the horsetail-bionic thin-walled structures (HBTSs) were investigated for their crashworthiness under axial dynamic loading. Six HBTSs with different cross section configurations (i.e., number of cells) were evaluated using nonlinear finite element (FE) simulations. To obtain the optimal design of the HBTSs, an ensemble metamodel-based multi-objective optimization method was employed to maximize the specific energy absorption while minimizing maximum impact force of the HBTSs. Using the ensemble metamodeling, FE simulations and the NSGA-II algorithm, the Pareto optimum designs of all six HBTSs were obtained and the HBTS with 16 cells were found to have the best crashworthiness. An optimum design of the HBTS with 16 cells was verified using FE simulation and found to have good agreement with simulation results.

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Energy absorption of multi-cell stub columns under axial compression

Cited by 286 publications

References 17 publications

Crush analysis and multi-objective optimization design for circular tube under quasi-static lateral loading

Crush analysis and multi-objective optimization design for circular tube under quasi-static lateral loading

A New Configuration of Circular Stepped Tubes Reinforced with External Stiffeners to Improve Energy Absorption Characteristics Under Axial Impact

Crashworthiness design of horsetail-bionic thin-walled structures under axial dynamic loading

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