Download or read book Biodynamic Modeling and Analysis of Motor Vehicle Rollover Occupants written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a computational, three-dimensional biodynamic model of a vehicle-occupant, crash-victim during rollover accident. The model represents the human body by a series of connected bodies simulating the limbs, torso, head and neck of the human frame. The computer algorithms are developed using DYNACOMBSC̈ a three-dimensional multibody dynamics computer simulation model. DYNACOMBS provides a dynamic analysis of arbitrary collections of bodies allowing for both translation and rotation between adjacent bodies. The relative orientation of adjacent bodies is defined by Euler parameters to avoid computational problems of singularities, which occur with other orientation angles (such as Bryan angles or Euler angles). Thus there are distinct computational advantages of the presented model over other crash-victim simulators. The governing dynamical equations for the model are based upon Kaneis̄ equations and their associated kinematical quantities (partial velocities, partial angular velocities, generalized speeds, and lower body arrays). Formulations based upon Kaneis̄ equations are believed to be the most efficient and most reliable of the various methods available for studying large multibody systems. Consequently they are ideally suited for studying the dynamics of crash victims. The developed vehicle and victim model allows for arbitrary vehicle motion. Specifically, given the vehicle rollover motion, as would occur in an accident environment, the simulation predicts the vehicle occupant movement and the forces exerted on the occupant by the seat and seat belts. The model is validated by a series of recently recorded sets of experimental data from dummies and cadavers in a variety of vehicle crash conditions.
Download or read book Rollover Accident Reconstruction written by Nathan A Rose and published by SAE International. This book was released on 2018-08-07 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the National Highway Traffic Safety Administration, “of the nearly 9.1 million passenger car, SUV, pickup and van crashes in 2010, only 2.1% involved a rollover. However, rollovers accounted for nearly 35% of all deaths from passenger vehicle crashes. In 2010 alone, more than 7,600 people died in rollover crashes.” Rollover accidents continue to be a leading contributor of vehicle deaths. While this continues to be true, it is pertinent to understand the entire crash process. Each stage of the accident provides valuable insight into the application of reconstruction methodologies. Rollover Accident Reconstruction focuses on tripped, single vehicle rollover crashes that terminate without striking a fixed object. Topics featured in this book include: • Analysis methods through various accident phases, including advanced simulation • Vehicle event data recorder usage • Occupant ejection during rollover crash The goal of this title is to break down the various phases of a rollover crash to analyze each stage for use in the reconstruction process - to the greater understanding of crash analysts, consultants and safety engineers alike.
Download or read book Rollover Accident Reconstruction written by Nathan A Rose and published by SAE International. This book was released on 2018-08-07 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the National Highway Traffic Safety Administration, “of the nearly 9.1 million passenger car, SUV, pickup and van crashes in 2010, only 2.1% involved a rollover. However, rollovers accounted for nearly 35% of all deaths from passenger vehicle crashes. In 2010 alone, more than 7,600 people died in rollover crashes.” Rollover accidents continue to be a leading contributor of vehicle deaths. While this continues to be true, it is pertinent to understand the entire crash process. Each stage of the accident provides valuable insight into the application of reconstruction methodologies. Rollover Accident Reconstruction focuses on tripped, single vehicle rollover crashes that terminate without striking a fixed object. Topics featured in this book include: • Analysis methods through various accident phases, including advanced simulation • Vehicle event data recorder usage • Occupant ejection during rollover crash The goal of this title is to break down the various phases of a rollover crash to analyze each stage for use in the reconstruction process - to the greater understanding of crash analysts, consultants and safety engineers alike.
Download or read book An Analysis of Motor Vehicle Rollover Crashes and Injury Outcomes written by Alexander Strashny and published by . This book was released on 2007 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rollover crashes can have serious consequences. In 2004, 33% of passenger vehicle occupant fatalities were in vehicles that rolled over. This report analyzes data related to passenger vehicle rollovers, including rollover propensity and injury outcomes. The report uses the Fatality Analysis Reporting System and National Automotive Sampling System General Estimates System databases to tabulate data on passenger vehicles and their occupants by a variety of variables and performs logistic analysis of the data. Tabulations focus on years 1994, 2003, and 2004; logistic analysis pools data for years 2000 through 2004. We specifically analyze factors that (a) were associated with vehicle rollovers in single-vehicle crashes of passenger vehicles; and (b) were associated with ejection status and varying degrees of injury severity of occupants of passenger vehicles that rolled over in single-vehicle crashes. Among other things, we also analyze the relationship between various anthropomorphic characteristics, such as the Body Mass Index, and seat belt effectiveness for drivers of passenger vehicles that were in single-vehicle rollovers. This report may be useful to other researchers and may provide a starting point for further analysis of vehicle rollovers and injury outcomes.
Download or read book Prediction of an Occupant s Motion During Rollover Crashes written by Louise A. Obergefell and published by . This book was released on 1986 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand an occupant's often violent and complicated motion during rollover accidents, the motion of an anthropomorphic dummy was predicted dynamically using the Articulated Total Body model, a human body gross motion simulation program. The accuracy of the predicted motion was established by its favorable comparison to that recorded on high speed film during a 60 mph crash in which the vehicle rolled over four times. This vehicle motion was then modified to six other rollover crash situations for computer simulation. Significant changes in the predicted occupant motion were readily observed. Differences were also observed in occupant accelerations and impact and belt forces. Keywords: Computer simulation, Modeling, Biodynamics.
Download or read book Biodynamic Modeling of Motor Vehicle Crash Victims written by Fadi Ahmad El-Khatib and published by . This book was released on 1999 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomechanical Analysis of Occupant Kinematics in Rollover Motor Vehicle Accidents Dynamic Spit Test written by Anthony Sances and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling of Vehicle Rollover and Evaluation of Occupant Injury Potential Using MADYMO written by and published by . This book was released on 1998 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rollover Accident Reconstruction written by Nathan A. Rose and published by . This book was released on 2018 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this title is to break down the various phases of a rollover crash to analyze each stage for use in the reconstruction process, to the greater understanding of crash analysts, consultants and safety engineers alike. Topics featured in this book include: Analysis methods through various accident phases, including advanced simulation, Vehicle event data recorder usage, Occupant ejection during rollover crash.
Download or read book Comparison of Jordan and Unconstrained Dynamic Rollover Tests Using Computational Finite Element Method written by Sandeepa Udawalawwa and published by . This book was released on 2019 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rollover crashes are complex and relatively infrequent compared with other types of vehicle crashes, but they result in highest fatality rates among all common types of vehicle accidents. The Sport Utility Vehicles (SUV's) are the most common vehicles involved in rollover crashes compared to other vehicles. Different types of static and dynamic test methods have been proposed and implemented to evaluate the performance of a vehicle in rollover crashes. However due to complexity of rollover crashes, no specific dynamic method is required at present to evaluate the rollover crash and occupant protection responses, as a several factors could affect the rollover impact outcome. In this study, the finite element modeling and simulation of a typical SUV is first conducted for static roof crush test per regulatory Federal Motor Vehicle Safety Standards (FMVSS) 216. Once model evaluation and validation is completed, the finite element modeling and simulation of a simplified Jordan Rollover System (JRS) is conducted and the results are compared with these corresponding to an unconstrained rollover tests, both performed on the same SUV. A parametric study is conducted for pertinent dynamic rollover parameters such as drop height of the vehicle, and the platform floor speed. The results from the simulation test measurements including intrusion of roof components, reaction/contact force on the platform, roll angle, and roll rate of the vehicle, and the internal energy generated of the rollover are all examined and compared. Results from the simulations are analyzed to examine the significance of using either JRS or unconstrained rollover models. Recommendations are made based on initial rollover conditions for better dynamic approach and suggestion for test protocols or standards.
Download or read book The Contribution of Vehicle Occupant and Crash Factors to the Risk of Injury as a Result of Vehicle Rollover written by Stephen Anthony Ridella and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rollover Accidents a Bibliography written by L. Flynn (comp) and published by . This book was released on 1977 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Analysis of Occupant Behavior in Vehicle Rollover Event written by Jean-Yves P. Burel and published by . This book was released on 2006 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulations of Rollover Tests written by and published by . This book was released on 1988 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The motion of an occupant during a rollover crash is often Violent and complicated. This motion needs to be studied so as to determine how best to protect an occupant during a rollover crash, and the best tool known is computer models which simulate the motion of an occupant. It was the Air Force's Articulated Total Body (ATB) model which was used. The accuracy of the simulations by this model has to be determined through a limited number of rollover crash tests. Five such tests were conducted under this program using a specially designed rollover test device, and the corresponding simulations of the motion of a dummy occupant are presented. The accuracy of the simulations obtained for these five tests with a rollover test device and the similar accuracy for one full-scale crash test conducted earlier on a different testing program provide confidence that an occupant's motion during a rollover crash, whether belted or unbelted, can be satisfactorily simulated by the Air Forces ATB. Computer simulations, Modeling, Biodynamics, Rollover, Crash.
Download or read book Accidental Injury written by Alan M. Nahum and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Writing on accidental injury often seems to occur from one of two perspec tives. One perspective is that of those involved in aspects of injury diagnosis and treatment and the other is that of those in the engineering and biologic sciences who discuss mechanical principles and simulations. From our point of view, significant information problems exist at the inter face: Persons in the business of diagnosis and treatment do not know how to access, use, and evaluate theoretical information that does not have obvious practical applications; persons on the theoretical side do not have enough real life field data with which to identify problems or to evaluate solutions. The ideal system provides a constant two-way flow of data that permits continuous problem identification and course correction. This book attempts to provide a state-of-the-art look at the applied bio mechanics of accidental-injury causation and prevention. The authors are recognized authorities in their specialized fields. It is hoped that this book will stimulate more applied research in the field of accidental-injury causation and prevention. Alan M. Nahum John W. Melvin vii Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . vii . . . . . . . . . . . . . . . . . Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi . . . . . . . . . . . . . . . . . Chapter 1 The Application of Biomechanics to the Understanding of Injury and Healing .................................. 1 Y. C. Fung Chapter 2 Instrumentation in Experimental Design . . . . . . . . . .. . . . 12 . . Warren N. Hardy Chapter 3 The Use of Public Crash Data in Biomechanical Research 49 Charles P. Compton Chapter 4 Anthropomorphic Test Devices. . . . . . . . . . . . . . . .. . . 66 . . . . . Harold J. Mertz Chapter 5 Radiologic Analysis of Trauma . . . . . . . . . . . . . . . .. . . 85 . . . . .
Download or read book Rollover Crash Study written by George Rechnitzer and published by . This book was released on 1994 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occupant Survivability in Large Truck Crashes written by Kenneth L. Campbell, James O'Day and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
