Crash Reconstruction Research: 20 Years of Progress, 1988-2007
Michael S. Varat
Society of Automotive Engineers, Jan 1, 2008 - Automobiles - 756 pages
Varat is with a transportation accident reconstruction consulting firm in California, and has organized numerous conferences and symposia on accident reconstruction, including sessions at the Society of Automotive Engineers (SAE) International World Congress. He presents a collection of 47 papers on crash reconstruction research produced between 1988 and 2007, organized into sections covering planar impact mechanics, stiffness modeling, collision pulse analysis, structural restitution, lateral deformation of frontal structures and override, BEV vs. Delta V, rear and side impacts, pole impacts, uncertainty analysis, pedestrian crashes, and braking performance. Each section opens with a short summarization of the articles that follow. The text is intended as a guide to the literature, to help engineers develop a personal and analytical toolkit for crash reconstruction. Included is a list of recommended published books for further reading. There is no subject index.
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Crush Energy and Planar Impact Mechanics
Introduction of Pulse Shapes and Durations into
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_ V _ accelerometer accident reconstruction analysis applied approximately Automotive Engineers average crush barrier impact barrier test braking bumper calculated coefficient of restitution collision comparison constant stiffness crash test data crush depth crush energy crush measurements crush profile curve damage data points deceleration deﬁned Delta-V determined dummy dynamic crush energy absorbed equation error estimate factor FMVSS Ford Escort Ford Taurus front frontal barrier frontal impact full frontal full-frontal Honda Accord Honda Civic impact mechanics impact speed impact tests impact velocity inches linear mass maximum crush method NHTSA offset parameters pedestrian planar impact mechanics plot pole impacts predicted proﬁle pulse rear relationship repeated tests residual crush rigid barrier SAE Paper saturation model side impact simulation skid Society of Automotive stiffness coefﬁcients Table tangential test vehicle throw distance trajectory transverse engine underride values vehicle-to-vehicle Warrendale WB Category width