Download or read book Analysis of a Carbon Fiber Reinforced Polymer Impact Attenuator for a Formula SAE Vehicle Using Finite Element Analysis written by John Rappolt and published by . This book was released on 2015 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hashin failure criteria and damage evolution model for laminated fiber reinforced polymers are explored. A series of tensile coupon finite element analyses are run to characterize the variables in the physical model as well as modeling techniques for using an explicit dynamic solver for a quasi-static problem. An attempt to validate the model on an axial tube crush is presented. It was found that fiber buckling was not occurring at the impactor-tube interface. Results and speculation as to why the failure initiation is incorrect are discussed. Lessons learned from the tube crush are applied successfully to the quasi-static Formula SAE nosecone crush test. The model is validated by experimental data and the impact metrics between the test and model are within 5%. Future work and possible optimization techniques are discussed.

Download or read book International Encyclopedia of Transportation written by and published by Elsevier. This book was released on 2021-05-13 with total page 4418 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an increasingly globalised world, despite reductions in costs and time, transportation has become even more important as a facilitator of economic and human interaction; this is reflected in technical advances in transportation systems, increasing interest in how transportation interacts with society and the need to provide novel approaches to understanding its impacts. This has become particularly acute with the impact that Covid-19 has had on transportation across the world, at local, national and international levels. Encyclopedia of Transportation, Seven Volume Set - containing almost 600 articles - brings a cross-cutting and integrated approach to all aspects of transportation from a variety of interdisciplinary fields including engineering, operations research, economics, geography and sociology in order to understand the changes taking place. Emphasising the interaction between these different aspects of research, it offers new solutions to modern-day problems related to transportation. Each of its nine sections is based around familiar themes, but brings together the views of experts from different disciplinary perspectives. Each section is edited by a subject expert who has commissioned articles from a range of authors representing different disciplines, different parts of the world and different social perspectives. The nine sections are structured around the following themes: Transport Modes; Freight Transport and Logistics; Transport Safety and Security; Transport Economics; Traffic Management; Transport Modelling and Data Management; Transport Policy and Planning; Transport Psychology; Sustainability and Health Issues in Transportation. Some articles provide a technical introduction to a topic whilst others provide a bridge between topics or a more future-oriented view of new research areas or challenges. The end result is a reference work that offers researchers and practitioners new approaches, new ways of thinking and novel solutions to problems. All-encompassing and expertly authored, this outstanding reference work will be essential reading for all students and researchers interested in transportation and its global impact in what is a very uncertain world. Provides a forward looking and integrated approach to transportation Updated with future technological impacts, such as self-driving vehicles, cyber-physical systems and big data analytics Includes comprehensive coverage Presents a worldwide approach, including sets of comparative studies and applications

Download or read book Advanced Manufacturing Systems and Innovative Product Design written by B. B. V. L. Deepak and published by Springer Nature. This book was released on 2021-02-17 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select papers presented at the Conference on Innovative Product Design and Intelligent Manufacturing System (IPDIMS 2020). The book discusses the latest methods and advanced tools from different areas of design and manufacturing technology. The main topics covered include design methodologies, industry 4.0, smart manufacturing, and advances in robotics among others. The contents of this book are useful for academics as well as professionals working in the areas of industrial design, mechatronics, robotics, and automation.

Download or read book 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 published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Weight Reduction Techniques Applied to Formula SAE Vehicle Design written by Lucas V. Fornace and published by . This book was released on 2006 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Damage Detection of Carbon Fiber Reinforced Polymer Using Electrical Measurement and Analysis of Acoustic Emission Signals written by Heng-Hsueh Chen and published by . This book was released on 2013 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fiber reinforced polymer composites (CFRPs) have been widely used in aerospace, civil engineering and so on in recent decades because of their excellent mechanical properties (high strength and stiffness), low density, long-term durability and high resistances to corrosion, pressure and other harsh environment conditions. Since CFRPs are multiphase materials that consist of polymer matrix and carbon fibers plies. Local separation between plies and/or debonding at fiber-matrix interface may occur during application. Damage in this form of delamination may affect the material properties such as the ability of stress transmission, which leads to component failure in the vehicles or even disastrous loss. Hence, the study of damage detection is necessary to ensure the safety use of CFRPs. In this thesis, we first introduce the tensile test for CFRP sample. The test is conducted by hydraulic wedge grip with electrical potential measurement and acoustic emission sensors, respectively. Continuous wavelet transform is applied to analyze output signals, which enables us to see the differences between unbroken and broken samples. Electrical potential measurement provides direct information from the original output signal about the sample damage, and there is no external sensors needed. Acoustic emission method, on the other hand, helps us to make hypothesis on recognizing different failure modes. Then we study the impact of damage in the form of delamiantion and the damage in the form of hole. By measuring the electrical potential, we estimate the damage location experimentally, and the linear relationship between damage dimension ratio and average/maximum ratio of potential change is developed to estimate the damage size. Then via 3D FEA modeling, we study the undamaged and damaged cases numerically with the same conditions as in the experimental study, and the electrical potential distributions are obtained to evaluate the damage. The numerical result shows good agreement with the experimental result.

Download or read book The Design and Development of a Vehicle Chassis for a Formula SAE Competition Car written by Izak Johannes Fourie and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Analysis of a Formula SAE Car written by Tommaso Innocenti and published by LAP Lambert Academic Publishing. This book was released on 2013-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the definition of a methodology to deeply analyze the dynamic and handling of a Formula SAE car, focusing the attention on the creation of a vehicle model able to simulate almost all the common maneuvers that the formula has to perform during a typical race. During the development of this work, two different models have been created: a 3 DOF one and a 15 DOF one. Both of them, built starting from the effective Formula SAE car geometric and inertial data, have been tested on common maneuvers and the results compared with the real car telemetry, to prove the efficiency and correct response of the simulator. Both the models gave interesting results, always demonstrating to give correct outputs, compared to real car or to commercial software.

Download or read book Vehicular Light Weighting by Finite Element Simulation of E GlassBased Composite Automotive Seat written by Medhavi Sinha and published by . This book was released on 2018 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The automobile industry has demonstrated itself to be one of the most quickly growing industries. However, the growth in the automotive industry has direct implications for fossil fuel reserves. The vigorously depleting fossil fuel reserves, the eminently increasing petroleum prices, the constant increase in pollution levels, and the hazardous effects of atmospheric environmental degradation are the driving forces for gravitation toward vehicular light weighting. The current article discuses the process of lightening the weight of front car seats, which is one of the most indispensable components of the automobile. This article demonstrates the feasibility of replacing metal automotive seats with E-Glassbased fiber-reinforced polymer (FRP) composite automotive seats. Various types of investigations and comparative analyses, such as analysis for displacement, force, force-to-weight ratio, maximum and minimum stresses, and unit cost of fiber composites, are performed on the conventional car seat composed of steel alloy 4340 and that composed of FRP composites. It can be demonstrated from the various analyses that a substantial weight reduction of front car seat is obtained with respect to alloy steel when FRPs are used as substitutional materials. The weight of the steel alloy front car seat is reduced by 79.76 % with the utilization of carbon fiber composite as an alternative material, whereas the component weight was reduced by 57.27 and 70.31 % with the utilization of glass fiber composite and Kevlar materials, respectively. A cost analysis is also performed, and it is determined that the costs of carbon fiber composite, glass fiber composite, and Kevlar are quite a bit higher than that of alloy steel. The stress analysis for alloy steel and fiber composites exhibits that the maximum stresses of glass fiber composite, carbon fiber composite, and Kevlar are about 1.95, 2.96, and 2.40 times higher than alloy steel.

Download or read book Proceedings of International Conference on Intelligent Manufacturing and Automation written by Hari Vasudevan and published by Springer. This book was released on 2018-11-04 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the outcomes of the International Conference on Intelligent Manufacturing and Automation (ICIMA 2018) organized by the Departments of Mechanical Engineering and Production Engineering at Dwarkadas J. Sanghvi College of Engineering, Mumbai, and the Indian Society of Manufacturing Engineers. It includes original research and the latest advances in the field, focusing on automation, mechatronics and robotics; CAD/CAM/CAE/CIM/FMS in manufacturing; product design and development; DFM/DFA/FMEA; MEMS and Nanotechnology; rapid prototyping; computational techniques; industrial engineering; manufacturing process management; modelling and optimization techniques; CRM, MRP and ERP; green, lean, agile and sustainable manufacturing; logistics and supply chain management; quality assurance and environment protection; advanced material processing and characterization; and composite and smart materials.

Download or read book Sources and translation series of the Russian institute Columbia University written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coupled Electrical and Thermal Damage Detection in Carbon Fiber Reinforced Polymers written by Jie Wen and published by . This book was released on 2011 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fiber reinforced polymer matrix composites (CFRPs) are widely applicable in various important structural components for aircraft, spacecraft, civil structures and energy generation infrastructures. One of the critical issues in the successful application of CFRPs is nondestructive assessment of damage state in a particular structural component. Electrical measurement is an emerging non-destructive evaluation technology for real-time/on-board damage detection in CFRPs. In this research, electrical potential was measured in an efficient A/D & D/A system to detect the damage in the CFRPs. There were three types of signals generated, DC, Sine wave, and the wavelet signal. To solve the problem of noise influence in the experiment, the wavelet theory has been demonstrated as a remarkable tool for noise reduction by comparing to the traditional signal analysis methods. Another part of this research is the coupled thermal-electrical analysis. To conduct the thermal study, the DC signal was employed to the CFRP sample as a thermal heating source for both experimental and numerical studies. In experimental study, the change of differential electrical potential was investigated to locate the damage and ratios of potential change were used to correlate with the damage size. Two linear relations were developed to evaluate the damage size, the variables of maximum ratio and average ratio of the potential changes. The thermal response was studied with thermography tests and results are compared to indicate the damage on the CFRP using temperature distribution changes. When the temperature distributions were compared to those of the electrical measurements, they were in good agreement in locating the damage. In the numerical analysis, the 3D coupled thermal-electrical finite element models have been successfully generated to simulate the electrical potential and the nodal temperature distributions. The experimental results and the numerical results have shown good agreement with each other.

Download or read book Modeling and Analysis of a Composite Formula SAE Chassis written by Michael Weiner and published by . This book was released on 1998 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling of Setting Stresses in Particle Reinforced Polymer Composites Using Finite Element Analysis written by Aladin Mohamed Boriek and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis and Design of a Formula SAE Powertrain written by Samantha Jo Bray and published by . This book was released on 2016 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis will analyze the MIT Formula SAE car to determine performance of our current and future cars. The conclusion of this analysis will drive the powertrain decisions for our Model Year 2017 (MY 17) and other future cars. Very little data relating to our cars currently exists, but is vital to proper design; therefore, that is the first step of this thesis. After current performance has been gaged, the next step will be determining a motor that will optimize vehicle performance for competition. From this our team could use either two motors with an electronic differential or one motor with a limited slip differential. Tangential to determining motors, analysis will also be done to determine whether chains or a planetary gear system would be more optimal for connecting the motor output to the rear wheels.

Download or read book Tensile Strength of Unidirectional Carbon Fiber Reinforced Plastic Composites written by Go Yamamoto and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tensile strengths of unidirectionally aligned carbon fiber-reinforced plastic (UD-CFRP) were predicted by implementing a spring element model (SEM) that takes into account a stress concentration acting on an intact fiber surface originated from a fracture site in an neighboring fiber. The surface stress concentration was experimentally investigated by implementing multi-fiber fragmentation testing in combination with the SEM simulation. Four types of epoxy materials were selected to explore the effects of matrix polymer properties on the surface stress concentration. The size scaling results, coupled with the results of the SEM simulation, designed to take into account the surface stress concentration, were reasonably consistent with the experimentally obtained data on the tensile strengths of the UD-CFRP composites, irrespective of the differences in the matrix mechanical characteristics. The possible mechanisms by which additional stress concentration is generated on an intact fiber surface were analyzed numerically using the finite element method.

Download or read book Method of Moment Analysis of Layered Carbon Fiber Composites with Applications to Electromagnetic Compatibility written by Fabian Happ and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: