Development of simplified models for design and optimization of automotive structures for crashworthiness

Kim, C.H.; Mijar, Anand R.; Arora, Jasbir S.

doi:10.1007/pl00013285

Cited by 48 publications

(28 citation statements)

References 17 publications

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“…Lumped parameters models have been proposed by Lust [6] and Kim et al [7] for crashworthiness structural optimization in the first stages of the design process. Mahmood et al [8] described in detail a procedure for rapid simulation and design of the frame of an automotive structure and Cheva et al [9] used lumped mass models for frontal/offset crash studies.…”

Section: Crashworthiness Simulation With the Mb Approachmentioning

confidence: 99%

Analysis of the coach rollover scenario

Belingardi

Martella

Peroni

2006

Vehicle System Dynamics

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A multibody model describing the behaviour of an M3 class coach in a rollover was developed. The model was validated by comparing the numerical results with the results of experimental rollover tests performed within the enhanced coach and bus occupant safety project. Through such numerical model, the approval tests, stated in the ECE66 regulation, were analyzed in depth. The simulations showed that the presence of passengers onboard, not taken into account in the regulation, considerably affects the deformation of the structure. The calculations showed as well that such influence on the deformation of the structure is strongly dependent on the passenger restraint configuration. The injury risk for passengers of coaches in a rollover accident was evaluated through the use of the mathematical model of crash test dummies. The simulations showed that the use of safety belts considerably reduce the injury risk.

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Section: Crashworthiness Simulation With the Mb Approachmentioning

confidence: 99%

Analysis of the coach rollover scenario

Belingardi

Martella

Peroni

2006

Vehicle System Dynamics

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“…In this field, it is especially relevant the design of structures whose mission is to absorb energy in Crashworthiness' crash type (200 m/s B speed B 500 m/s), as well as those that can appear in vehicles, helicopters, etc. [27,35,10,28]. Therefore, what is being sought is the development of structures capable of absorbing energy to avoid or lessen the damages to the passengers of the concerned vehicles.…”

Section: Introductionmentioning

confidence: 99%

A neural network--based methodology for the recreation of high-speed impacts on metal armours

González‐Carrasco

García-Crespo

Ruíz‐Mezcua

et al. 2011

Neural Comput & Applic

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The prediction of the consequences of a ballistic impact is highly relevant in the advanced material engineering. Traditionally, the solution of this kind of problems was made by means of experimental tests, analytical models or numerical simulations. In this domain, the particularities of the phenomenon at high speed increase the difficulty of the mathematical resolution of the equations associated, and the complexity of the mechanical behaviour of the materials at high strain rates complicates the numerical simulation of the problem. Therefore, this paper describes a neural network-based methodology applied to recreate the ballistic impact phenomenon. The objective of this study is threefold. Firstly, to obtain the most precise prediction possible, minimizing the amount of data used. Secondly, to discover and analyse the influence of each of the variables on the entire neuronal model. Finally, to compare the precision and performance of this methodology with other alternatives of learning machine. The empirical results have shown that the proposed methodology is an interesting approach to reliably solving ballistic impact problems.

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“…Since the 1970s, mass-spring models have been used for crash simulation in vehicles as proposed by Kamal et al [5,6]. With the advent of the commercial finite-element (FE) programmes these models have lost part of their importance for simulation purposes but are still of interest in optimisation procedures [7,8], in the first stages of the design process.…”

Section: Introductionmentioning

confidence: 99%

Study on characteristics of a crashworthy high-speed train nose

Tehrani

Nankali

2010

International Journal of Crashworthiness

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The external shape of a high-speed train nose is usually designed according to the aerodynamic considerations and to minimise the drag forces and noises. Crashworthiness of the nose is another aspect that is important from the passive-safety point of view. To improve the crashworthiness characteristics, usually there are not many options for changing the external shape of a high-speed train nose; therefore, a systematic study has been conducted to examine possible strategies in order to design crashworthy external and internal structures for a high-speed train nose. It is observed that the longer and slender noses show better crashworthiness characteristics. In addition, various multi-layer noses are studied, and the best internal-layer geometry is proposed. At the last step the effects of foam usage in different spaces between internal and external layers of the nose are shown.

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Development of simplified models for design and optimization of automotive structures for crashworthiness

Cited by 48 publications

References 17 publications

Analysis of the coach rollover scenario

Analysis of the coach rollover scenario

A neural network--based methodology for the recreation of high-speed impacts on metal armours

Study on characteristics of a crashworthy high-speed train nose

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