Crashworthiness Of A Vehicle For Rollover Impact Protection Using Impaxx And Aluminum Foam Materials
DOWNLOAD
Download Crashworthiness Of A Vehicle For Rollover Impact Protection Using Impaxx And Aluminum Foam Materials PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Crashworthiness Of A Vehicle For Rollover Impact Protection Using Impaxx And Aluminum Foam Materials book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Crashworthiness Of A Vehicle For Rollover Impact Protection Using Impaxx And Aluminum Foam Materials
DOWNLOAD
Author : Sanjay Narayan
language : en
Publisher:
Release Date : 2019
Crashworthiness Of A Vehicle For Rollover Impact Protection Using Impaxx And Aluminum Foam Materials written by Sanjay Narayan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Electronic dissertations categories.
Rollover crash events frequency accounts for only 3% among all types of accidents, but in terms of fatality rate, it accounts for 33% of fatalities in automobile crash accident events. Rollover events are complex and unpredictable, making them quite difficult to design a standard testing procedures. The angle of contact with the ground, the side coming into contact, height of fall, speed of vehicle, cause for rollover, etc., are all parameters and factors which could affect rollover crash responses. Presently the standard testing procedure for rollover is a quasi-static roof crush test procedure. This study details the development, analysis and computational modelling and simulation of the performance of an IMPAXX and aluminum foam and their potential as an energy absorbing material to improve the roof strength of a vehicle. First the IMPAXX foam and Aluminum foam are modelled using the LS-DYNA code, and their performances are evaluated using a drop tower test and a free motion headform test methods. Next, the IMPAXX foam and Aluminum foam are modelled for insertion in the roof A-pillar of a typical sports utility vehicle (Toyota Rav4). Quasi-static roof crush computational tests, per two different standards FMVSS 216 and IIHS are conducted on the vehicle and solved using the LS-DYNA for vehicles with and without the IMPAXX and aluminum foam. The results are analyzed and compared to quantify the effectiveness of the IMPAXX foam and aluminum foam as energy absorbing materials for rollover crashworthiness responses of vehicle and its occupant protection.
Improvement In Crashworthiness Of A Vehicle For Side Impact Occupant Protection Using Impaxx And Polyurethane High Energy Absorbing Foam Materials
DOWNLOAD
Author : Saketh Reddy Muthyala
language : en
Publisher:
Release Date : 2017
Improvement In Crashworthiness Of A Vehicle For Side Impact Occupant Protection Using Impaxx And Polyurethane High Energy Absorbing Foam Materials written by Saketh Reddy Muthyala and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Electronic dissertations categories.
Side impact car crashes account for roughly 30% of all fatalities in road accidents including passenger cars and light trucks, and they tend to have a disastrous effect on the human body than all other types of car accidents due to very less crumple zone. In consideration of all this, even in the lower end and higher end vehicle segments, active safety systems are incorporated more often for side impact protection. However, there is still a large number of vehicles built without side airbags, in specific regions such as North America and emerging markets. Therefore, it is still necessary to engineer passive safety measurement by utilizing safety countermeasures, such as foams solutions to protect the occupant during side impact collisions. The present study is focused on investigation of the advantage of applying high efficient energy absorption foams for side impact protection of car occupants. First, the characteristics of high energy absorbing foam models are examined by finite element analysis and simulations of the Drop Tower Tests and the Free Motion Headform tests. After ensuring material models behavior, the design of the current B-pillar is altered by adding foam into its cavity. Subsequently, side impact test simulations of a typical passenger car with a moving deformable barrier, as per NHTSA and IIHS safety regulations, with the current and modified B-pillar are conducted. In the end, various injury criteria are evaluated by positioning a ES-2re finite element dummy model with, a three-point lap and shoulder seat belt into the driver seat. The study demonstrates that the potential for the use of high-energy absorbing foam for side impact protection.
Numerical And Experimental Investigation Of Nylon66 Pa66 Reinforced Recycled Carbon Fiber Composites And Aluminum Foam For Application In Vehicle Crashworthiness And Occupant Protection Per Various Fmvss Regulations
DOWNLOAD
Author : Tharun R. Chillakuru
language : en
Publisher:
Release Date : 2022
Numerical And Experimental Investigation Of Nylon66 Pa66 Reinforced Recycled Carbon Fiber Composites And Aluminum Foam For Application In Vehicle Crashworthiness And Occupant Protection Per Various Fmvss Regulations written by Tharun R. Chillakuru and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Electronic dissertations categories.
In the past decade, there has been an increase in the usage of advanced composite structures and metal foam filler materials for a wide range of applications in the automotive industry, primarily due to their correct strength, stiffness, and energy absorption. In addition, these materials offer high impact resistance compared to traditional metals and foam materials like PU/IMPAXX. However, due to the destructive nature of the crashes, the costs involved in testing physical car models are escalating every year. For this reason, numerical simulations, particularly Finite Element Analysis (FEA), significantly lower the costs associated with physical model testing. The goal of this research is to investigate two different engineered materials; namely Nylon66 reinforced recycled carbon fiber (PA66 RCF), and aluminum metal foam, for crashworthiness applications. To achieve this goal, it is essential to have a library of mechanical properties with materials of interest. Firstly, the coupon level tests such as tensile, three-point bending, and compression are performed. The experimental test data is numerically validated to have a working and scalable LS-DYNA material card for the component level and full-scale simulations. Secondly, the component level simulations are performed on empty thin-wall square PA66 RCF tubes and aluminum foam-filled tubes to understand the compressive behavior of the materials and later compared against the empty thin-wall and aluminum foam-filled steel square tubes. Finally, full-scale dynamic simulations are performed according to the federal motor vehicle safety standards (FMVSS) NO.208, NO.214, NO.301R, and NO.216a using the LS-DYNA FE code. The materials are utilized in various regions of the vehicle including the front bumper, side driver door, rear bumper, and roof panel of a compact sedan finite element model. This study quantifies deceleration loads, energies, and compartment intrusion. It is demonstrated that applying PA66 RCF and foam materials significantly reduce compartment loads and intrusions. Therefore, both materials are shown to exhibit promising results in improving vehicle crashworthiness and occupant protection of ground vehicles.
Spectroscopy Of Organic Compounds
DOWNLOAD
Author : P S Kalsi
language : en
Publisher: New Age International
Release Date : 2007
Spectroscopy Of Organic Compounds written by P S Kalsi and has been published by New Age International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Chemistry, Organic categories.
The Sixth Edition Of This Widely Used Text Includes New Examples / Spectra / Explanations / Expanded Coverage To Update The Topic Of Spectroscopy. The Artwork And Material In All Chapters Has Been Revised Extensively For Students Understanding.New To This Edition * New Discussion And New Ir, 1H Nmr, 13C Nmr And Ms Spectra. * More Important Basic Concepts Highlighted And Put In Boxes Throughout This Edition. * Chapters On 1H Nmr And 13C Nmr Rewritten And Enlarged. More On Cosy, Hetcor, Dept And Inadequate Spectra. * A Rational Approach For Solving The Structures Via Fragmentation Pathways In Ms. * Increased Power Of The Book By Providing Further Extensive Learning Material In This Revised Edition. * A Quick And An Easy Access To Topics In Ugc Model Curricula.With Its Comprehensive Coverage And Systematic Presentation The Book Would Serve As An Excellent Text For B.Sc. (Hons.) And M.Sc. Chemistry Students. It Provides Knowledge To Excel At Any Level, University Examination, Competitive Examinations E.G. Net And Before Interview Boards.
Rheokinetics
DOWNLOAD
Author : A. Ya. Malkin
language : en
Publisher: John Wiley & Sons
Release Date : 2008-09-26
Rheokinetics written by A. Ya. Malkin and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-26 with Technology & Engineering categories.