Evaluation of New Steel and Composite Beam Designs for Side Impact Protection of a Sedan as Per FMVSS 214, IIHS and Side Pole Tests Requirements PDF Download
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Author: Viquar H. Mohammad Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 82
Book Description
Side impact crashes can be generally quite dangerous due to the limited space in the car door for large deformation and energy-dissipation in order to protect an occupant from the crash forces. The side impact collision is the second largest cause of death in United States after frontal crash. Day-by-day increase in the fuel cost and the emission of the smoke from the automobile industry are also the major concerns in the contemporary world. Hence the safety, fuel efficiency and emission gas regulation of the passenger cars are important issues in contemporary world. An ideal way to increase the fuel efficiency without sacrificing the safety is to employ composite materials in the body of the cars because the composite materials have higher specific strength than those of steel. The increase in the usage of composite material directly influences the decrease in the total weight of car and gas emission. In this research, carbon/epoxy AS4/3051-6 is used as composite material for a side impact beam design, which has adequate load carrying capacities and that it absorbs more strain energy than steel. The finite element (FE) models of a typical passenger car and the moving deformable barrier (MDB), as available in literature, have been utilized for the analysis in this thesis. The current side impact beam is removed from the car and the new beam, which is designed using CATIA, is merged on to the driver side of the front door of the car model. The total energy absorptions of the new beam with steel and composite material are compared with those of the current beam in three-point bending test simulations. The surface plots for mass (weight), specific energy, and intrusion are developed as design charts. The intrusions of the beam are then evaluated by using the full-vehicle models and as per regulatory FMVSS 214, IIHS and Side Pole impact safety methods. The new impact beam with composite material is shown to exhibit higher impact energy absorption capability, when compared to current beam and new beam with steel, with 62.5% reduction in weight.
Author: Viquar H. Mohammad Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 82
Book Description
Side impact crashes can be generally quite dangerous due to the limited space in the car door for large deformation and energy-dissipation in order to protect an occupant from the crash forces. The side impact collision is the second largest cause of death in United States after frontal crash. Day-by-day increase in the fuel cost and the emission of the smoke from the automobile industry are also the major concerns in the contemporary world. Hence the safety, fuel efficiency and emission gas regulation of the passenger cars are important issues in contemporary world. An ideal way to increase the fuel efficiency without sacrificing the safety is to employ composite materials in the body of the cars because the composite materials have higher specific strength than those of steel. The increase in the usage of composite material directly influences the decrease in the total weight of car and gas emission. In this research, carbon/epoxy AS4/3051-6 is used as composite material for a side impact beam design, which has adequate load carrying capacities and that it absorbs more strain energy than steel. The finite element (FE) models of a typical passenger car and the moving deformable barrier (MDB), as available in literature, have been utilized for the analysis in this thesis. The current side impact beam is removed from the car and the new beam, which is designed using CATIA, is merged on to the driver side of the front door of the car model. The total energy absorptions of the new beam with steel and composite material are compared with those of the current beam in three-point bending test simulations. The surface plots for mass (weight), specific energy, and intrusion are developed as design charts. The intrusions of the beam are then evaluated by using the full-vehicle models and as per regulatory FMVSS 214, IIHS and Side Pole impact safety methods. The new impact beam with composite material is shown to exhibit higher impact energy absorption capability, when compared to current beam and new beam with steel, with 62.5% reduction in weight.
Author: Sree Surya Teja Kadiyala Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 92
Book Description
This study describes the development of a new side-impact beam design with high-performance polymer/plastic materials. The new designs are analyzed and contrasted with the original side impact beam made from conventional steel material. The novel designs are assessed on a wide range of parameters to make sure that occupant safety is not compromised. Three different high-performance plastic materials (LCP-CF-30, PA6-CF-30, and PA66-GF-60) are considered. The methodological framework of Finite Element Analysis (FEA) is used for numerically computing, analyzing, evaluating, and refining the new side-impact bar designs. This study accordingly examines and quantifies the detailed effects of the collision on the side-impact beams of different designs. The design and the material with the desired result are then integrated into a typical passenger car Finite Element Model, and computational impact evaluation tests and analysis are carried out as per Federal Motor Vehicle Safety Standard (FMVSS-214). The results from the Moving Deformable Barrier (MDB) and the Rigid Pole tests, including parameters such as intrusions, accelerations, and ratings are determined as per Insurance Institute for Highway Safety (IIHS) side-impact structural safety guidelines. High-performance plastics-based side-impact beams are shown to exhibit considerable reductions in intrusions and accelerations in the tested FE models. Of all the designs and materials tested, the designs based on LCP-CF-30 material are shown to exhibit the most reductions in intrusion and accelerations on side-impact beams. Inferring from the MDB and Rigid Pole tests, the study concludes that the novel LCP-CF-30 based side-impact beam provides improved safety when contrasted with that of the original steel side-impact beam. This study also demonstrates that when used with appropriate designs, high-performance plastics can be quite effective in producing components with desired energy absorption capabilities and significant reductions in displacements and mass.
Author: Department of Transportation: National Highway Traffic Safety Administration Publisher: CreateSpace ISBN: 9781492389156 Category : Technology & Engineering Languages : en Pages : 52
Book Description
Beginning September 1, 1993, all light trucks (pickup trucks, vans, and sport utility vehicles) were required to meet a crush resistance standard for side doors. Data from calendar years 1989 through 2001 of the Fatality Analysis Reporting System (FARS) were used to determine the effectiveness of changes made by vehicle manufacturers to meet this standard. Effectiveness was determined by comparing changes in the number of fatalities in side impacts relative to those in frontal impacts.
Author: Sandeep Kumar Siruvole Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 136
Book Description
[Author abstract] Every year around the world various types of automobile accidents occur, out of which side impact vehicular collisions are the most severe. Of these, side crashes into fixed narrow objects like trees, poles account for quarter percent of total deaths and serious injuries. Moreover these side impacts present a difficult problem for improving automotive crashworthiness because of the limited crushable zone between the vehicle occupant and the intruding door structure. To improve the automotive safety in side impacts a new pole test has been proposed under Federal Motor Vehicle Safety Standard (FMVSS) 214 to make the existing regulation more comprehensive in addressing the critical head and neck injuries in addition to thoracic and pelvis injuries. In this thesis, a finite element model of the Ford Taurus and Moving Deformable Barrier (MDB) as developed by National Crash Analysis Center (NCAC) has been used for the impact analysis. The US DOT-SID side impact dummy taken from MADYMO dummy database has been used as the vehicle occupant and the rigid pole modeled in MSC. Patran software as the narrow object. Computer Simulations have been analyzed according to the new proposed pole test and (FMVSS) 214 regulation. The critical injury values, the occupant kinematics and the structural damage have been compared justifying the need for the new pole test for improving the occupant safety.
Author: Julian Weber Publisher: Springer Science & Business Media ISBN: 3642012531 Category : Technology & Engineering Languages : en Pages : 321
Book Description
The global crisis the automotive industry has slipped into over the second half of 2008 has set a fierce spotlight not only on which cars are the right ones to bring to the market but also on how these cars are developed. Be it OEMs developing new models, suppliers integerating themselves deeper into the development processes of different OEMs, analysts estimating economical risks and opportunities of automotive investments, or even governments creating and evaluating scenarios for financial aid for suffering automotive companies: At the end of the day, it is absolutely indispensable to comprehensively understand the processes of auto- tive development – the core subject of this book. Let’s face it: More than a century after Carl Benz, Wilhelm Maybach and Gottlieb Daimler developed and produced their first motor vehicles, the overall concept of passenger cars has not changed much. Even though components have been considerably optimized since then, motor cars in the 21st century are still driven by combustion engines that transmit their propulsive power to the road s- face via gearboxes, transmission shafts and wheels, which together with spri- damper units allow driving stability and ride comfort. Vehicles are still navigated by means of a steering wheel that turns the front wheels, and the required control elements are still located on a dashboard in front of the driver who operates the car sitting in a seat.
Author: Narayan Yoganandan Publisher: Springer ISBN: 1493917323 Category : Medical Languages : en Pages : 855
Book Description
This book provides a state-of-the-art look at the applied biomechanics of accidental injury and prevention. The editors, Drs. Narayan Yoganandan, Alan M. Nahum and John W. Melvin are recognized international leaders and researchers in injury biomechanics, prevention and trauma medicine. They have assembled renowned researchers as authors for 29 chapters to cover individual aspects of human injury assessment and prevention. This third edition is thoroughly revised and expanded with new chapters in different fields. Topics covered address automotive, aviation, military and other environments. Field data collection; injury coding/scaling; injury epidemiology; mechanisms of injury; human tolerance to injury; simulations using experimental, complex computational models (finite element modeling) and statistical processes; anthropomorphic test device design, development and validation for crashworthiness applications in topics cited above; and current regulations are covered. Risk functions and injury criteria for various body regions are included. Adult and pediatric populations are addressed. The exhaustive list of references in many areas along with the latest developments is valuable to all those involved or intend to pursue this important topic on human injury biomechanics and prevention. The expanded edition will interest a variety of scholars and professionals including physicians, biomedical researchers in many disciplines, basic scientists, attorneys and jurists involved in accidental injury cases and governmental bodies. It is hoped that this book will foster multidisciplinary collaborations by medical and engineering researchers and academicians and practicing physicians for injury assessment and prevention and stimulate more applied research, education and training in the field of accidental-injury causation and prevention.
Author: Viquar H. Mohammad
Author: Viquar H. Mohammad
Author: Sree Surya Teja Kadiyala
Author: 
Author: Charles Jesse Kahane
Author: Department of Transportation: National Highway Traffic Safety Administration
Author: Sandeep Kumar Siruvole
Author: Marie C. Walz
Author: Charles Jesse Kahane
Author: Julian Weber
Author: Narayan Yoganandan