Display:

Results

Viewing 181 to 210 of 13422
2016-03-03
Magazine
Multi-material structures move mpg upward The quest to improve fuel economy is not waning, nor is the desire to achieve higher mpg through the use of just the right lightweight material for the right vehicle application. Cars poised to become 'a thing' Making automobiles part of the Internet of Things brings both risks and rewards. Agility training for cars Chassis component suppliers refine vehicle dynamics at the high end and entry level with four-wheel steering and adaptive damping. SAE 2016 World Congress Preview Technology trends and exhibitor products are highlighted in this special section, which features Toyota's plans for the show floor, tech sessions, and more.
2016-03-02
Standard
J1698/1A_201603
SAE J1698-1A creates an appendix to SAE J1698-1. The appendix contains EDR Record parameters and definitions related to light duty passenger vehicle pedestrian protection systems.
2016-03-01
Magazine
A beast of its own kind The University of Michigan Solar Car Team falls a bit short in 2015 Bridgestone World Solar Challenge, but distinguishes itself nonetheless. Finding career inspiration via algorithm Participation in collegiate engineering competitions can reveal untapped talents and interests. Just ask Ohio State student Katherine Bovee. SAE 2016 World Congress preview Powering Possibilities is Toyota's goal at SAE 2016 World Congress.
2016-03-01
Standard
GEIAHB649A
This handbook is intended to assist the user to understand the ANSI/EIA-649B standard principles and functions for Configuration Management (CM) and how to plan and implement effective CM. It provides CM implementation guidance for all users (CM professionals and practitioners within the commercial and industry communities, DoD, military service commands, and government activities (e.g., National Aeronautics and Space Administration (NASA), North Atlantic Treaty Organization (NATO)) with a variety of techniques and examples. Information about interfacing with other management systems and processes are included to ensure the principles and functions are applied in each phase of the life cycle for all product categories.
2016-02-24
Standard
GEIAHB0005_1A
This handbook is designed to assist a program in assuring the performance, reliability, airworthiness, safety, and certifiability of product(s), in accordance with GEIA-STD-0005-1, “Performance Standard for Aerospace and High Performance Electronic Systems Containing Pb-free Solder”. Please note that the program manager, and managers of systems engineering, Supply Chain and Quality Assurance (along with their respective organizations), and the appropriate enterprise authority need to work together in ensuring that all impacts of Pb-free technology insertion are understood and risks mitigated accordingly. Herein “program management (or manager), supplier chain management (or manager), quality assurance management (or manager) and systems engineering management (or manager) and/or the appropriate enterprise authority” shall be defined as “responsible manager” throughout the remaining document (see Section 3, Terms and Definitions).
2016-02-24
Standard
AS1814D
This list of terms, with accompanying photomicrographs where appropriate, is intended as a guide for use in the preparation of material specifications. The terms and photomicrographs are intended to present definitions only; they do not define either acceptance limits or minimum standards of quality. Listings are not grouped by specific alloys or conditions and represent the typical microstructures wherever they occur. Etchants used for the microstructures shown are stated. Where "Krolls" is stated, the composition is 10 ml HF, 30 ml HNO3, and 50 ml water (H2O). Other common etchants are listed in ASTM E407, Microetching Metals and Alloys.
2016-02-24
Standard
J1939DA_201602
This document is intended to supplement the J1939 documents by offering the J1939 information in a form that can be sorted and search for easier use. The J1939 Digital Annex, introduced in August 2013, offers key J1939 technical data in an Electronic Spreadsheet that can be easily searched, sorted, and adapted to other formats. J1939DA contains all of the SPNs (parameters), PGNs (messages), and other J1939 data previously published in the SAE J1939 top level document. J1939DA also contains all of the SLOTs, Manufacturer ID Codes, NAME Functions, and Preferred Addresses previously published in the SAE J1939 top level and the J1939-71 document. J1939DA contains the complete technical details for all of the SPNs and PGNs previously published in the SAE J1939-71 document. It also includes the supporting descriptions and figures previously published in the SAE J1939-71 document.
2016-02-19
WIP Standard
J3061
This recommended practice provides guidance on vehicle Cybersecurity and was created based off of, and expanded on from, existing practices which are being implemented or reported in industry, government and conference papers. The best practices are intended to be flexible, pragmatic, and adaptable in their further application to the vehicle industry as well as to other cyber-physical vehicle systems (e.g., commercial and military vehicles, trucks, busses). Other proprietary Cybersecurity development processes and standards may have been established to support a specific manufacturer’s development processes, and may not be comprehensively represented in this document, however, information contained in this document may help refine existing in-house processes, methods, etc. This recommended practice establishes a set of high-level guiding principles for Cybersecurity as it relates to cyber-physical vehicle systems.
2016-02-18
Standard
J2403DA_201602
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
2016-02-18
Standard
J1939/81_201602
SAE J1939-81 Network Management defines the processes and messages associated with managing the source addresses of applications communicating on an SAE J1939 network. Network management is concerned with the management of source addresses and the association of those addresses with an actual function and with the detection and reporting of network related errors. Due to the nature of management of source addresses, network management also specifies initialization processes, requirements for reaction to brief power outages and minimum requirements for ECUs on the network.
2016-02-15
WIP Standard
AS6171/16
Netlist Assurance Test Methods exist to assess microcircuit designs for maliciously added, removed, or modified functions detrimental to system operation. In the context of the Microcircuit fabrication design process, these methods will be used to analyze a computer aided design (CAD) representation of the microcircuit. The Netlist Assurance Test Methods discover vulnerabilities, undisclosed functions (e.g. "kill switch", paths to leak passwords, or triggers of malicious activity) and changes from the original specifications of the devices. These methods are intended to be used with standard verification methods that the implemented design has remained unchanged through the many transformations in the design flow.
2016-02-09
WIP Standard
J1698
This recommended practice describes common definitions and operational elements of Event Data Recorders. The SAE J1698 series of documents consists of the following: • SAE J1698-1 - Event Data Recorder - Output Data Definition; Provides common data output formats and definitions for a variety of data elements that may be useful for analyzing vehicle crash and crash-like events that meet specified trigger criteria. • SAE J1698-2 - Event Data Recorder - Retrieval Tool Protocol; Utilizes existing industry standards to identify a common physical interface and define the protocols necessary to retrieve records stored by light duty vehicle Event Data Recorders (EDRs). • SAE J1698-3 - Event Data Recorder - Compliance Assessment; Defines procedures that may be used to validate that relevant EDR output records conform with the reporting requirements specified in Part 563, Table 1 during the course of FMVSS-208, FMVSS-214 and other applicable vehicle level crash testing.
2016-02-08
Article
Developers are starting to adapt complex design simulations into easy to use tablet apps. Could gear box designs using non-linear stress analysis, fatigue predictions, and CFD be coming to your smartphone?
2016-02-05
Magazine
Off-highway hybrids: Opportunities and challenges With oil prices declining and emissions regulations in North America 'stabilized,' is there a place for hybrid powertrains in this new world of cheap oil? Looking for a better image Display advances are helping to reduce operator fatigue. Charging up electrified powertrains Control technologies race forward while batteries improve and adopt standard sizes. Measuring and accounting for suspension TARDEC teamed with SEA Ltd. to develop a system to measure the suspension parameters, center of gravity, and moments of inertia of wheeled vehicles in the never ending quest to model and predict vehicle dynamic behavior. Looking at mobility in 2050 Cuneyt L. Oge begins his term as 2016 SAE International President with a vision about the future of auto- and aero-mobility.
2016-02-04
WIP Standard
J3131
SAE J3131 defines an automated driving reference architecture that contains functional modules supporting future application interfaces for Levels 3 through 5 (J3016). The architecture will model scenario-driven functional and nonfunctional requirements, automated driving applications, functional decomposition of an automated driving system, and relevant functional domains (i.e., functional groupings). Domains include, but are not limited to, automated driving (i.e., automation replacing the human driver), by-wire and active safety, and those related to automated recovery from faults and system failures (e.g., system bringing the vehicle to a safe state). The architecture will address Tier 1 and Tier 2 functional groupings. The document will include one example instantiation being divides the functionality into two functionality groupings, and will detail the functional and information interface between the groups.
2016-02-03
WIP Standard
AS6171/15
Non-conformance and now Suspect counterfeit packaging represents a hazard to electrostatic discharge (ESD) sensitive devices or components through cross contamination during transport and storage while generating high voltage discharges to ESD sensitive devices during in shipping, the inspection process, handling and manufacturing. Several aerospace related issues involve long-term storage supplier non-conformance with antistatic foams, antistatic bubble, antistatic pink poly, vacuum formed antistatic polymers, Type I moisture barrier bags and Type III static shielding bags have posed issues. The late John Kolyer, Ph.D. (Boeing, Ret.) and Ray Gompf, P.E., Ph.D. (NASA-KSC, Ret.) were advocates in the utilization of a formalized physical testing material qualification process. Today, however, prime contractors and CMs rely heavily upon a visual inspection process for ESD packaging materials.
2016-02-03
Magazine
Baking in protection With vehicles joining the Internet of Things, connectivity is making cybersecurity a must-have obligation for automotive engineers, from initial designs through end-of-life. New Engines 2016 Highlighting the design, engineering, and technologies inside some of the most competitive new gasoline and light-duty diesel ICEs. Citizen of the world Cuneyt L. Oge begins his term as 2016 SAE International President with a vision about auto-mobility and aero-mobility 2050. CES rollouts extend connectivity, app integration Ford looks to spread Corning's new lightweight Gorilla Glass beyond the 2017 GT New 40%-scale wind tunnel increases GM's aero-development capacity Surface Generation speeds composites throughput with one-shot stamp-forming process 2017 Cadillac XT5 debuts GM's new lightweight crossover architecture Porsche and Bentley plan electric future
2016-02-01
Magazine
Stanford goes solar down under Team takes sixth place in Bridgestone World Solar Challenge to cap a rigorous two-year design and development program. Taking the lead Being in charge of an SAE Student Chapter entails everything from organizing meetings to issuing 'nastygrams.' A winning video from a winning Collegiate Design Series team The defending champion of the Formula SAE Michigan competition, Oregon State University, has found another way to win. SAE U.K. Section co-hosts lecture series 'starring' NASA engineer/expert Dr. Ravi Margasahayam of NASA is the engineer responsible for ensuring payload safety for the Space Shuttle and the International Space Station.
2016-02-01
Technical Paper
2016-28-0149
Hemant Pratap Singh, Pulkit Sagar, Kartikey Singh
Abstract This paper deals with the problems which emanates in front of society in developing electric vehicles. Aim of this paper is to prepare ways through which we can develop electric vehicle with efficiency (more than 60%). So that these electric vehicles can substitute I.C engine vehicles, which are main cause of environment pollution. To achieve that goal, various competitions are arranged in which one sitter kart develop to ease mechanical constraints and easily utilize innovations in kart. To develop kart various type of modelling and simulation were done on INVENTOR and ANSYS 14.0. Different type of test were also taken into account like Brake test, Speed test, Power test, Load test, and efficiency test. This paper also motivates student in developing vehicles so that they can excel their knowledge and assist in research of electric vehicles.
2016-02-01
Technical Paper
2016-28-0195
Bibin Alias, Eswar Kurukundu, Savitha Nandagudi
Abstract A simplified mathematical model of tandem suspension is presented to study the different parameters of tandem suspension. The equations of motion are compiled considering the system to be 3 degrees of freedom system, taking into accounts both oscillation and deflection of the leaf spring. The response characteristics for vibration isolation for the company test track road profiles at different speeds of the vehicle are calculated. The sensitivity of acceleration to variations in un-sprung masses and axle spacing is illustrated. Further, the usefulness of the model for studying the effect of shock absorber positioning on ride of tandem bogie suspension system is demonstrated.
2016-02-01
Technical Paper
2016-28-0194
Srikanta Nahak, Sagar Bhojne
Abstract Earth moving machines are steered using various steering methodology. Articulated steering mechanism is the most popular type of steering methods. It is actuated by hydraulic cylinders connected to the steering linkages. While the machine is deployed with articulated type steering, vehicle stability is proportionate to the steering velocity. Articulated steering provides two important features, shorter turning radius, allows front and back axle to be solid. Directional stability refers to a vehicle’s ability to stabilize its direction of motion against disturbances. Majority of earth moving equipment operates on basic cycle of Load-Haul-Dump. During each cycle, vehicle needs to be steered at least once. To optimize the machine performance for improved productivity it is essential to study the correlation between articulation speed and operational weight of the vehicle.
2016-02-01
Technical Paper
2016-28-0185
Narayan Venkitachalam, David Neihguk, Gurdeep Singh Pahwa, Parth Lunia, Abhinav Prasad, J Perumal
Abstract The excitation to a vehicle is from two sources, road excitation and powertrain excitation. Vehicle Suspension is designed to isolate the road excitation coming to passenger cabin. Powertrain mounts play a vital role in isolating the engine excitation. The current study focuses on developing an analytical approach using Low-Fidelity computer programs to design the Powertrain Mount layout and stiffness during the initial stage of product development. Three programs have been developed as a part of this study that satisfy the packaging needs, NVH requirements and static load bearing requirements. The applications are capable of providing the Kinetic Energy Distribution and Static Analysis (Powertrain Enveloping and Mount Durability) for 3-point and 4-point mounting systems and the ideal mount positions and stiffness for 3-point mounting systems.
2016-02-01
Technical Paper
2016-28-0198
Joydeep Chatterjee, Harveen Talwar, Srishti Garg
Abstract In a typical passenger vehicle, there can be different types of noises generated which are broadly categorized as Interior Noise and Exterior Noise. The interior noise sources can be further classified into noises which can be Structure Borne or Air Borne. One of the major sources of both structure borne and airborne noise generation is the powertrain of the vehicle. The structure-borne noise and vibrations generated from the powertrain is usually transferred to the vehicle body through its attachment points to the body and the powertrain driveline. These induced body vibrations can sometimes cause the acoustic cavity of the passenger cabin to go into resonance which results in an annoying and disturbing noise for the passengers, called Booming Noise. Very often, one or more than one vehicle body panels show a dominant contribution in inducing this acoustic cavity resonance.
2016-02-01
Technical Paper
2016-28-0177
Sreedeep Thiyya Kkandiyil, Monish M. H. Gowda, Hima Kiran Venna
Abstract Vehicle dynamics is one of the important domains in the automotive field. It is the study of performance, ride and handling of the vehicle. The design of steering system, suspension system and front axle plays an important role in achieving good ride and handling characteristics of the vehicle. The wheel geometry is one of the suspension parameter that affects handling characteristics of the vehicle. Hence proper selection of wheel geometry angles such as caster, camber, toe, steering angle inclination and scrub radius plays an important role in suspension design. In this thesis work study has been conducted to analyze the influence of steering axis inclination and scrub radius on steering effort of passenger car. This study helps in selecting proper steering axis inclination and scrub radius with a goal of achieving lesser steering effort. Multi body dynamic model of selected passenger car has been built using ADAMS Car.
2016-02-01
Technical Paper
2016-28-0178
Santosh Shankara Murthy, Monish M. H. Gowda, Hima Kiran Venna
Abstract Vehicle dynamics is the study of response of the vehicle to driver’s input. Various parameters like location of center of gravity (CG), suspension spring stiffness, wheel alignment parameters, etc. determine the handling behavior of the vehicle. This is a study to investigate the effects of aforesaid parameters on handling characteristics of an intercity bus using MSC ADAMS software tool. Handling performance is determined by evaluating various parameters such as understeer gradient, roll gradient, etc. Understeer gradient is influenced by various parameters like location of CG, tire cornering stiffness, etc. Roll gradient of a vehicle depend on various parameters like vertical stiffness of tires, anti-roll bars (ARB) diameter, location of CG, etc. As a part of this study, four different configurations of MBD models were built to investigate the effect of location of ARB on handling behavior of bus.
2016-02-01
Technical Paper
2016-28-0079
Paramjeet Panwar
Abstract The paper discusses a low fidelity mathematical simulation model using a backward facing modelling approach to vehicle simulation for calculation of energy requirements and flow through a simplified Series-HEV. Mathematical modelling techniques for HEV’s are well established method for purposes such as vehicle system simulations, developing control strategies, energy usage and range estimation with high detail and high degree of accuracy, and have been discussed extensively in literature. The paper discusses a low fidelity mathematical model of a Series-HEV which can be used to introduce undergraduate engineering students to concepts of HEVs. The model will be used as a case study to introduce and inspire students into using mathematical modelling of systems for their engineering coursework.
2016-02-01
Technical Paper
2016-28-0058
Ninad Pimpalkhare, Gaurav Kumar, Yuva Kishore Vaddi, Chetan Prakash Jain
Abstract Inside cabin of a passenger car, low frequency booming noise still presents a major hurdle for NVH engineers to fine tune a vehicle. Low frequency booming noise is presently taken care with addition of mass damper and large reinforcements. These conventional countermeasures add weight to the vehicle as well as increase the overall production cost. The study presented in this paper proposes a countermeasure model that not only reduces the booming noise but also avoids any weight and cost addition. It has been focused for low frequency booming noise around 30 ∼ 40 Hz. Within the range mentioned, one of the major reasons for booming noise in hatchback models is the bending resonance of backdoor. By modifying the mode of the backdoor in such a manner that it cancels the effect of bending on the vehicle acoustic cavity, improvement can be achieved in terms of sound pressure level at the driver’s right ear location (DREL).
2016-02-01
Technical Paper
2016-28-0051
Sandip Sahoo, Abhinav Kuchhal, Sekharan Vineeth, Vikram Chauhan
Abstract Shielding vehicle underbody or engine room components from exhaust heat is becoming a difficult task with increasing packaging constraints, which lead to the proximity of components with high temperatures of the exhaust systems. Heat insulators are provided to protect various components from exhaust system parts. Generally the requirement of heat insulators are fixed on the basis of benchmarked temperatures measured on vehicles with similar layout, during the initial phase of vehicle design. Also various CFD techniques are available to predict the surface temperatures on components in order to determine the necessity of a heat insulator. The aforementioned techniques use radiation and convection heat transfer effects on a complete vehicle model and the overall process generally takes considerable time to provide the results. This paper deals with a theoretical approach to predict the temperatures on nearby components due to exhaust system heat.
2016-02-01
Technical Paper
2016-28-0044
Ashish Rawat, Ashwinder Singh, Hardeep Singh, Deepak Sharma
Abstract India is a country of diversity. From North to South, east to west, one can find altogether different culture, religions, spoken languages, foods, weather conditions, people lifestyles, dressing styles etc. This vast diversity of India poses a great challenge in front of Indian Automobile Manufacturers, so as to assimilate all the requirements (of this big nation) in one single car (design). For example, many people in India wear turban (out of their religious beliefs or cultural heritage). So, is it required to keep enough consideration for Turban wearing population in vehicle design? Turban, unlike caps or hats, is something which is tied on the head (not just only kept). It is something which cannot be removed whenever required. So, it can somehow be considered as an integral part of body (as an added head dimension). So, it becomes all the more important to thoroughly understand this aspect & keep a consideration for the same in vehicle design.
2016-02-01
Technical Paper
2016-28-0041
Ramsai Ramachandran, Ayan Bhattacharyya, Sukhchain Singh
Abstract Automobile components are usually subjected to complex varying loads. Thus, fatigue failure is a common mode of failure in automobile components. Accurately predicting the fatigue life is the key point for light weight and also reliability design of automobile components. Various life prediction theories are being used in the automotive industry for damage analysis using material S-N curves. However, due to variability in manufacturing, material spec etc. it is difficult to predict the experimental lives using conventional theories. Probability based statistical modeling is prevalent in the industry for life prediction. Probabilistic plots of cycles to failure to constant amplitude loads are plotted and used for prediction purpose. As the component is subjected to varying loads in real world, defining a single parameter i.e. damage would be more relevant compared to loads.
Viewing 181 to 210 of 13422

Filter