Automating Instrument Panel Head Impact Simulation

In this study, dynamic impact analysis for the passenger air-bag(PAB) module has been carried out by using FEM to predict the dynamic characteristics of vehicle ride safety against head impact. To carry out the dynamic analysis of head impact test of the PAB module assembly of automobile, the FE models, which are consist of instrument panel, PAB Module, and head part, are combined to the whole module system. Then, impact analysis is carried out by the explicit solution procedure with assembled FE model. And the dynamic characteristics of the head impact are observed to prove the effectiveness of the proposed method by comparing with the experimental results. As a result, the better optimized impact characteristics are proposed by changing the tie bracket's width and thickness of module. The proposed approach of impact analysis will provides an efficient vehicle to improve the design quality and reduce the design period and cost.

Download Full-text

Composite Materials in Automotive: Improving Safety by Refining FEA Correlation

Volume 13: Transportation Systems ◽

10.1115/imece2013-64564 ◽

2013 ◽

Author(s):

Giuseppe Miscia ◽

Enrico Bertocchi ◽

Luca D’Agostino ◽

Andrea Baldini ◽

Enrico Dolcini ◽

...

Keyword(s):

Composite Materials ◽

Optimization Technique ◽

Software Tool ◽

High Energy ◽

Head Impact ◽

Safety Standards ◽

Impact Simulation ◽

Experimental Correlation ◽

Open Issue ◽

Materials Behavior

In the last few years, the restrictive safety standards and the need for weight reduction have brought the crashworthiness research to focus on composite materials because of their high energy absortion-to-mass ratio. On the other hand, the possibility of obtaining predictive dynamic FEA models for these new materials is still an open issue: the present work aims at developing a methodology for the characterization of composite materials with particular interest for the head impact simulation. Composite materials behavior, defined through the mathematical models implemented in FEA codes, is very complex and requires a large amount of physical and numerical setting parameters. The majority of these parameters can be obtained by an experimental campaign that involves several kind of different tests. The presented methodology allows to obtain a good numerical-experimental correlation simply performing few tests which emulate the behavior of the component during the head impact event. A software tool based on a genetic optimization technique has been developed in order to determinate automatically the material properties values that guarantee the best numerical-experimental correlation.

Download Full-text

Design and Analysis of Automotive Instrument Panel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.980.263 ◽

2014 ◽

Vol 980 ◽

pp. 263-268 ◽

Cited By ~ 1

Author(s):

Nur Akmal Haniffah ◽

Mohamad Fazrul Zakaria ◽

Tan Kean Sheng

Keyword(s):

Finite Element ◽

Impact Analysis ◽

Acrylonitrile Butadiene Styrene ◽

Head Impact ◽

Cost Evaluation ◽

Raw Material ◽

Instrument Panel ◽

Fe Model ◽

Element Analysis ◽

Front Passenger

This study presents the automotive instrument panel (IP) design in order to improve the quality, cost, and safety of the existing design. A few conceptual designs were generated based on safety aspect and ergonomic design. The most suitable design was selected using concepts scoring. The IP head impact simulation was conducted using finite element analysis (FEA) to predict the head injury criterion (HIC) value of the front passenger in vehicle according to ECE-R21 regulation. The finite element (FE) model, which consist of upper IP, lower IP, carrier structure and head-form, was built-up to carry out head impact analysis of the IP assembly. The optimum IP design was proposed by analysis of different materials, which are 20% talc filled rubber modified polypropylene (PP+EPDM-TD20), acrylonitrile butadiene styrene (ABS) polymer, and polypropylene (PP) copolymer. The HIC value for all IP was compared using simulation result and theoretical calculation. The lowest HIC value will reduce the head occupant injury. In this study, only the raw material cost was considered in cost evaluation. The IP from ABS polymer performed the lowest HIC value, which were 179.7 but very costly compare to other materials.

Download Full-text

1G43 Construction and Head Impact Simulation of 3D FEM Model of the Brain Considering the Material Properties of Each Part of Brain

The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME ◽

10.1299/jsmebio.2016.28._1g43-1_ ◽

2016 ◽

Vol 2016.28 (0) ◽

pp. _1G43-1_-_1G43-5_

Author(s):

Yu SUIZU ◽

Junji OHGI ◽

Itsuo SAKURAMOTO ◽

Xian CHEN ◽

Norihiro NISHIDA ◽

...

Keyword(s):

Material Properties ◽

Head Impact ◽

3D Fem ◽

Fem Model ◽

Impact Simulation ◽

The Brain

Download Full-text

Head Impact Analysis of a Typical Instrument Panel Mounted Radio

10.4271/2007-26-007 ◽

2007 ◽

Cited By ~ 1

Author(s):

Kishan B. Sreenath ◽

Arvind Krishna

Keyword(s):

Impact Analysis ◽

Head Impact ◽

Instrument Panel

Download Full-text

Engineering Development of an Instrument Panel Concept Using a Unified FE Modeling Approach

Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology ◽

10.1115/esda2006-95058 ◽

2006 ◽

Author(s):

Mehdi Danesh Sararoudi ◽

Nima Shamsaei ◽

Hossein Darijani ◽

Reza Naghdabadi

Keyword(s):

Global Economy ◽

Freezing Temperature ◽

Head Impact ◽

Instrument Panel ◽

Fe Modeling ◽

Temperature Variations ◽

Vehicle Cabin ◽

Modeling Approach ◽

Design Engineers ◽

Plastic Parts

In today’s global economy, the automotive design engineer’s responsibilities are made more complex by the differences between regulatory requirements of the various global markets. This paper compares instrument panel head impact requirements of FMVSS 201 with its European counterparts, ECE 21. The behavior during a head impact test has been studied. Due to the gravity of the cockpit module, the sag has been analyzed to simulate shipping, loading, and assembly conditions. The interior parts of the vehicle cabin are exposed to temperature variations due to radiation effect of sun ray or freezing temperature in winter. Plastic parts appear to be more thermally susceptible than steel parts in temperature variations. The key issue was minimizing thermal deformation while developing the IP. The cockpit design engineers have gained an understanding of the factors involved in ensuring that their design fully meets the requirements of the subject regulations. CAE simulations performed which are repetitive processes and a unified FE modeling approach has handled analyses by different codes.

Download Full-text