What should I use to calculate vehicle EES?

Area of Science:

• * Forensic Engineering
• * Accident Reconstruction
• * Automotive Safety

Background:

• * Accurate vehicle crash analysis relies on precise impact speed determination.
• * Impact speed calculation involves assessing kinetic energy during vehicle deformation.
• * The CRASH3 algorithm is a key tool in forensic crash analysis.

Purpose of the Study:

• * To analyze factors influencing Energy Equivalent Speed (EES) determination via the CRASH3 algorithm.
• * Investigate the impact of damage extent (measurement points), deformation width, and limit speed (b0) on EES.
• * Evaluate how collision type and vehicle category affect these variables.

Main Methods:

• * Varied input parameters including measurement points, deformation width, and b0.
• * Analyzed data based on collision overlap and vehicle classification.
• * Utilized the CRASH3 algorithm for Energy Equivalent Speed (EES) calculations.

Main Results:

• * Using only 2 measurement points for deformation profile is not recommended for CRASH3 analysis.
• * 7 measurement points offer greater appropriateness for deformation profiling compared to fewer points.
• * Deformation width significantly influences EES; b0 variations notably impact EES for SUVs due to their stiffness.

Conclusions:

• * Employing 5-7 measurement points provides more reliable EES determination in CRASH3 analysis.
• * Deformation width is a critical factor in EES accuracy.
• * Lower b0 values are unsuitable for high-stiffness vehicles like SUVs.