Experimental investigations on the behaviour of short to long square aluminium tubes subjected to axial loading

Jensen, Østen; Langseth, Magnus; Hopperstad, Odd Sture

doi:10.1016/j.ijimpeng.2004.05.002

Cited by 113 publications

(46 citation statements)

References 10 publications

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“…3 for location A). The automotive side member is made of a long column, and therefore, even under pure axial loading, local bending collapse easily occurred, as found by Jensen et al [17].…”

Section: Resultsmentioning

confidence: 81%

Effect of Automotive Side Member Materials on the Head Injury Criteria (HIC) and Chest Severity Index (CSI) of Adult Passenger

Salwani

Ali

Sahari

et al. 2016

IJET

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ABSTRACT. This paper presents the results for Head Injury Criteria (HIC) and Chest Severity Index (CSI) of an adult occupant in frontal impact. The component being studied is side member as impact energy absorber. Steel side member is used as the benchmark material, whereas aluminum alloy is used as lightweight material. Crash analyses are conducted using nonlinear finite element analysis software Ls-dyna. The effect of different types of aluminum alloy and component thickness on the HIC, CSI, weight and energy absorbed is assessed and discussed. A cost function is then formulated with the geometrical average method to solve the multi-objective problem. The HIC36 and CSI are set as minimum requirements in the optimization. The materials used was Aluminium alloy of AA 5182 AA5751. It was found that AA5751 with inner and outer thickness of 2.8 mm and 4.9 mm respectively, provides a reduction in mass of 1.03 kg compared with steel and has energy absorbed of 11.9 kJ. The lowest values of HIC36 and CSI obtained are 1146 and 665.4 respectively.

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Section: Resultsmentioning

confidence: 81%

Effect of Automotive Side Member Materials on the Head Injury Criteria (HIC) and Chest Severity Index (CSI) of Adult Passenger

Salwani

Ali

Sahari

et al. 2016

IJET

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“…The example is essentially picked from Fyllingen et al [1] and Jensen et al [21]. In this work, the problem is used to exemplify the robust optimization approach, while the predictability of the FE model is not emphasized.…”

Section: Square Aluminium Tube Examplementioning

confidence: 99%

An approach to robust optimization of impact problems using random samples and meta-modelling

Lönn

Fyllingen

Nilssona

2010

International Journal of Impact Engineering

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Conventionally optimized structures may show a tendency to be sensitive to variations, for instance in geometry and loading conditions. To avoid this, research has been carried out in the field of robust optimization where variations are taken into account in the optimization process. The overall objective is to create solutions that are optimal both in the sense of mean performance and minimum variability. This work presents an alternative approach to robust optimization, where the robustness of each design is assessed through multiple sampling of the stochastic variables at each design point. Meta models for the robust optimization are created for both the mean value and the standard deviation of the response. Furthermore, the method is demonstrated on an analytical example and an example of an aluminium extrusion with quadratic cross section subjected to axial crushing.It works well for the chosen examples and it is concluded that the method is especially well suited for problems with a large number of random variables, * Corresponding author. Tel.:+46-13-282475; fax:+46-13-282717.Email address: david.lonn@liu.se (David Lönn)Preprint submitted to International Journal of Impact Engineering July 2, 2009 M A N U S C R I P T A C C E P T E D ARTICLE IN PRESSsince the computational cost is essentially independent of the number of random variables. In addition, the presented approach makes it possible to take into consideration variations that cannot be described with a variable. This is demonstrated in this work by random geometrical perturbations described with the use of Gaussian random fields.

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“…With the objective to optimize the energetic behavior of structural members, numerical and experimental studies have been realized. In these studies, factors such as cross section geometry [21,11], length of the profile [10] and manufacture material [17] have been evaluated. Other studies have focused their efforts in the implementation of geometrical discontinuities to reduce the peak load value.…”

Section: Introductionmentioning

confidence: 99%

Effect of quadrilateral discontinuity size on the energy absorption of structural steel profiles

Estrada¹,

Szwedowicz²,

Majewski³

et al. 2016

EiN

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Experimental investigations on the behaviour of short to long square aluminium tubes subjected to axial loading

Cited by 113 publications

References 10 publications

Effect of Automotive Side Member Materials on the Head Injury Criteria (HIC) and Chest Severity Index (CSI) of Adult Passenger

Effect of Automotive Side Member Materials on the Head Injury Criteria (HIC) and Chest Severity Index (CSI) of Adult Passenger

An approach to robust optimization of impact problems using random samples and meta-modelling

Effect of quadrilateral discontinuity size on the energy absorption of structural steel profiles

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