Biomechanics and Occupant Motion

"Biomechanics is the study of the structure and function of biological systems by means of the methods of mechanics" * Combined with testing and computer modeling,  biomechanics and occupant motion are applied to human movement in order to gain an understanding to:


- determine the injury potential in any collision

- demonstrate the effects of design changes for seat cushions, rollovers, roof intrusion, interaction with interior surfaces, occupant ejection, and any other dynamic event

- understand injury causation which may increase passenger safety

* Hatze H. Letter: The meaning of the term "biomechanics". J Biomech. 1974;7:189–190.

About Us

EI Consultants, LLC was organized in 1984 by Dr. David Renfroe. The company is now owned by Stanley Andrews.

EI Consultants, LLC provides engineering consulting, research and public services relating to the automotive industry.

Expert Services: Vehicle Safety Research, Safe Vehicle Component Designs and Accident Reconstruction.

Presentation Services: Trial Director Presentations, Large Format Diagrams, Animation and Digitization.

Other Services: Complete Lab, Shop and Test Facilities, Vehicle and Evidence Storage and Low Speed Rear Impact Injury Analysis.

Contact Us

13045 W. Hwy 62
P.O. Box 610
Farmington, Arkansas 72730

479-846-8002 Fax

Office Hours: 8a.m. - 5p.m., M-F


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