# Estimation of energy distribution for car-body deformation

István Harmati, P. Várlaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

### Abstract

Identification of distribution of deformational energy for vehicle body deformational processes is a very important and difficult task in accident analysis and in safety car-body design. Exact estimation or measuring of the absorbed energy by the deformation is almost impossible, so we apply an estimation for this. The classical tool for this task is usually a differental equation based finite element method, which requires exact knowledge about the parameters. In the following we introduce a simple numerical model describing the changing of the energy distribution during the whole deformational process. The main idea is similar to a finite element method: let have a 3D rectangular grid on the car-body, according to the energy absorbing properties of the vehicle, so each cell is approximately homogenous. For For each cell a monotonous decreasing function is assigned, which describes approximately the rate of the absorbed and the input energy. For different possible directions of the impact we define different absorbing functions, and instead of the original input, we deal with its orthogonal components, so the final result then will be the sum of the particular result.

Original language English ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings 229-232 4 https://doi.org/10.1109/ISCIII.2007.367394 Published - 2007 ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics - Agadir, MoroccoDuration: Mar 28 2007 → Mar 30 2007

### Other

Other ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics Morocco Agadir 3/28/07 → 3/30/07

### Fingerprint

Energy Distribution
Finite element method
Energy
Absorbing
Numerical models
Accidents
Finite Element Method
Cell
Safety
Grid

### Keywords

• Car crash
• Energy distribution

### ASJC Scopus subject areas

• Artificial Intelligence
• Software
• Mathematics(all)

### Cite this

Harmati, I., & Várlaki, P. (2007). Estimation of energy distribution for car-body deformation. In ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings (pp. 229-232).  https://doi.org/10.1109/ISCIII.2007.367394
ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings. 2007. p. 229-232 4218427.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harmati, I & Várlaki, P 2007, Estimation of energy distribution for car-body deformation. in ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings., 4218427, pp. 229-232, ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics, Agadir, Morocco, 3/28/07. https://doi.org/10.1109/ISCIII.2007.367394
Harmati I, Várlaki P. Estimation of energy distribution for car-body deformation. In ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings. 2007. p. 229-232. 4218427 https://doi.org/10.1109/ISCIII.2007.367394
Harmati, István ; Várlaki, P. / Estimation of energy distribution for car-body deformation. ISCIII'07: 3rd International Symposium on Computational Intelligence and Intelligent Informatics; Proceedings. 2007. pp. 229-232
title = "Estimation of energy distribution for car-body deformation",
abstract = "Identification of distribution of deformational energy for vehicle body deformational processes is a very important and difficult task in accident analysis and in safety car-body design. Exact estimation or measuring of the absorbed energy by the deformation is almost impossible, so we apply an estimation for this. The classical tool for this task is usually a differental equation based finite element method, which requires exact knowledge about the parameters. In the following we introduce a simple numerical model describing the changing of the energy distribution during the whole deformational process. The main idea is similar to a finite element method: let have a 3D rectangular grid on the car-body, according to the energy absorbing properties of the vehicle, so each cell is approximately homogenous. For For each cell a monotonous decreasing function is assigned, which describes approximately the rate of the absorbed and the input energy. For different possible directions of the impact we define different absorbing functions, and instead of the original input, we deal with its orthogonal components, so the final result then will be the sum of the particular result.",
keywords = "Car crash, Energy distribution",
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AB - Identification of distribution of deformational energy for vehicle body deformational processes is a very important and difficult task in accident analysis and in safety car-body design. Exact estimation or measuring of the absorbed energy by the deformation is almost impossible, so we apply an estimation for this. The classical tool for this task is usually a differental equation based finite element method, which requires exact knowledge about the parameters. In the following we introduce a simple numerical model describing the changing of the energy distribution during the whole deformational process. The main idea is similar to a finite element method: let have a 3D rectangular grid on the car-body, according to the energy absorbing properties of the vehicle, so each cell is approximately homogenous. For For each cell a monotonous decreasing function is assigned, which describes approximately the rate of the absorbed and the input energy. For different possible directions of the impact we define different absorbing functions, and instead of the original input, we deal with its orthogonal components, so the final result then will be the sum of the particular result.

KW - Car crash

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