Design of the occupant protection system for frontal impact using the axiomatic approach

Abstract The functional requirements (FRs) and design equation of a flexible system change in a continuous manner with respect to a variable such as time. An event-driven flexible system is defined as a subcategory of the flexible system in that it changes in a discrete space. A design scenario is developed for the event-driven systems. The design equation for each event should be defined by using the axiomatic approach and the design equations are assembled to form a full design equation. The design equation for each event can be established by sensitivity analysis. In conceptual design, the design order is determined on the basis of the full design equation. Design parameters (DPs) are found to satisfy FRs in sequence. A DP may consist of multiple design variables. In a detailed design, the design variables are determined. The occupant protection system is an event-driven flexible system because the design matrix and its elements change according to the impact speed. The involved devices are designed on the basis of the developed method. FRs at different impact speeds and corresponding DPs are defined. In a detailed design, the full factorial design of experiments is employed for the design variables of the DPs to reduce the injury levels of the occupant. Computer simulation is utilized for evaluation of the injuries. The results are discussed.

[1]  Daniel Woodman.  High Efficiency Energy Absorber for Knee Impact , 2003 .

[2]  Stephen R. Kratzke.  REGULATORY HISTORY OF AUTOMATIC CRASH PROTECTION IN FMVSS 208. IN: SEAT BELTS: THE DEVELOPMENT OF AN ESSENTIAL SAFETY FEATURE , 1995 .

[3]  Gwang-Sub Shin.  AXIOMATIC DESIGN OF A BEAM ADJUSTER FOR A LASER MARKER , 2002 .

[4]  Gyung-Jin Park,et al.  Development of a design system for EPS cushioning package of a monitor using axiomatic design , 2005, Adv. Eng. Softw..

[5]  Gopal Narwani,et al.  Optimization of Passenger Airbags Using Occupant Simulation , 1993 .

[6]  Sang-Woo Lee,et al.  Development of Design System for EPS Cushioning Package of Monitor Using Axiomatic Design , 2003 .

[7]  John E. Hinger,et al.  Advanced Air Bag Systems and Occupant Protection: Recent Modifications to FMVSS 208 , 2001 .

[8]  Gyung-Jin Park,et al.  Automotive Occupant Dynamics Optimization , 1995 .

[9]  H G Johannessen.  HISTORICAL REVIEW OF AUTOMATIC SEAT BELT RESTRAINT SYSTEMS. RESTRAINT TECHNOLOGIES: FRONT SEAT OCCUPANT PROTECTION. AN INTERNATIONAL CONGRESS AND EXPOSITION, DETROIT, MICHIGAN, USA, FEBRUARY 23-27, 1987 , 1987 .

[10]  Jian-fu Hou,et al.  Optimisation of Driver-Side Airbag and Restraint System by Occupant Dynamics Simulation , 1995 .

[11]  Keith R. Dickson,et al.  Airbag Restraint System Design by Crash Simulation Modeling and Design of Experiments , 1990 .

[12]  Nam P. Suh,et al.  Axiomatic Design Theory for Systems , 1998 .

[13]  Yong-Cheol Jo,et al.  Robust Design of the Vibratory Gyroscope with Unbalanced Inner Torsion Gimbal Using Axiomatic Design , 2002 .

[14]  Gyung-Jin Park,et al.  Design of an Automobile Seat With Regulations Using Axiomatic Design , 2005, DAC 2005.

[15]  Nam P. Suh,et al.  Axiomatic Design: Advances and Applications , 2001 .

[16]  Tae-Sik Lee,et al.  Complexity theory in axiomatic design , 2003 .

[17]  Manuel S. Pereira,et al.  Crashworthiness of transportation systems : structural impact and occupant protection , 1997 .

[18]  Esther Seiden,et al.  On Orthogonal Arrays , 1966 .

[19]  Gyung-Jin Park,et al.  Design of Occupant Protection Systems Using Global Optimization , 2004 .

[20]  Nam P. Suh,et al.  principles in design , 1990 .

[21]  Gyeong-Jin Park,et al.  Axiomatic Design of a Beam Adjuster for Laser Marker , 2002 .