Browse Publications Technical Papers 2004-01-1631
2004-03-08

Correlation Grading Methodology for Occupant Protection System Models 2004-01-1631

Computer modeling and simulation have become one of the primary methods for development and design of automobile occupant protection systems (OPS). To ensure the accuracy and reliability of a math-based OPS design, the correlation quality assessment of mathematical models is essential for program success. In a typical industrial approach, correlation quality is assessed by comparing chart characteristics and scored based on an engineer's modeling experience and judgment. However, due to the complexity of the OPS models and their responses, a systematic approach is needed for accuracy and consistency. In this paper, a correlation grading methodology for the OPS models is presented. The grading system evaluates a wide spectrum of a computer model's performances, including kinematics, dynamic responses, and dummy injury measurements. Statistical analysis is utilized to compare the time histories of the tested and simulated dynamic responses. The statistical quantity measurements include the average residual, standard deviation, correlation coefficient, and 0th to 2nd moment relative differences. The correlation quality of overall kinematics and dynamic responses is scored and color-coded from weak, marginal, adequate, good to excellent. The grading system can clearly distinguish the correlation quality for different models. The evaluation of a side curtain airbag component model and a frontal impact system model is presented as examples to demonstrate the applications of the correlation grading system.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Virtual Interior Development – Reduction of Development Time and Costs for Fulfilling the FMVSS 201u

2002-01-0566

View Details

TECHNICAL PAPER

Simulation Optimization of the Crashworthiness of a Passenger Vehicle in Frontal Collisions using Response Surface Methodology

850512

View Details

TECHNICAL PAPER

Video Analysis and Analytical Modeling of Actual Vehicle/Pedestrian Collisions

2014-01-0483

View Details

X