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Investigation of Cabin Noise While Accelerating on Low MU Track Through Simulation Approach Using Full Vehicle ADAMS/Car Model

Tata Motors, Ltd.-Tej Prasad, Harshit Srivastava
Tata Technologies-Vivek Singh
  • Technical Paper
  • 2019-26-0179
To be published on 2019-01-19 by SAE International in United States
Cabin noise is a significant product quality criteria which enables the customers for product differentiation. There are various reasons which leads to cabin noise such as wind, structures(panels), engine, suspension, tire and roads. During product development phase, extensive tests has been conducted to minimize cabin noise. One of such test is accelerating vehicle on low mu or icy surface. While performing acceleration maneuver(tractions) on a low mu tracks, Cabin noise and Low tractive torque build-up is reported. A detailed simulation based study using ADAMS/CAR has been performed to assess the contribution of various full vehicle sub-systems, primarily suspension & powertrain sub-system towards the said problem statement. The dynamic interaction between road, suspension, Powertrain and BIW has been is the focus of study both in time and frequency domain. This simulation helped understand the factor effects and contribution levels and correlates well with the subjective feel observed on the physical vehicle on low-mu track. This model has been further used to provide design recommendation on the compliance parameters to overcome the issue at hand. Test has…

A Robust Structure Analysis on Automotive Door Armrest

FCA Engineering India Pvt Ltd.-Aswin Venkatesan, Sathish Kumar Sampath Kumar, Chandrasekhar Uppaluru
FCA US LLC-Mark Gratowski
  • Technical Paper
  • 2019-26-0006
To be published on 2019-01-19 by SAE International in United States
An automobile door is one vital commodity which has its role in vehicle's function, strength, safety, dynamics, storage and aesthetic parameters. The door system comprises of door upper, bolster, armrest, main panel, map-pocket, handle and speaker grille. Among them, armrest is an integral part, which provides function and takes care of some safety parameter for the customers. The basic function of an armrest is to provide ergonomic relief to occupant for resting his hand. Along with this, it also facilitates occupant safety during a side impact collision by absorbing the energy and not imparting the reactive force on occupant. Thus an armrest has evolved as a feature of passive safety. The armrest design should be stiff enough to withstand required vertical load condition with-in the acceptable deflection criteria. On the other hand, armrest has to absorb the dynamic force by deflecting proportionally to the side impact. In this study the various structure of armrest was analyzed to strike an ideal zone between functional and safety parameters. The scope is to improve the functional requirement, i.e.,…

Safety and Comfort for All: An Affordable Hill-Hold and Automated Parking Brake System

Schaeffler India-Ramkumar Iyer, Yogesh Awade, Pritesh Doshi, Abhishek Dabhade, Vinod Jadhav
  • Technical Paper
  • 2019-26-0005
To be published on 2019-01-19 by SAE International in United States
With an ever increasing number of vehicles on Indian roads, the safety and ease of driving has become a very important criterion for the customers. In passenger and commercial vehicles, while launching a vehicle on gradient or stop and go traffic in hilly region, the vehicle tends to roll back due to the slope. This is also a safety issue, as this may cause collision with the vehicle on the rear. It requires a skilled driver to coordinate between the clutch pedal, brake pedal (as well as handbrake in some situations) and accelerator pedal to prevent the vehicle from rolling back while handling such situations. It also leads to clutch disc wear and heating as the driver may tend to slip the clutch to prevent the vehicle from rolling back. Hill hold is a driver assist feature which prevents the vehicle roll back/roll forward during launch operation on uphill/downhill conditions. Hill-hold is offered as an add-on feature on most vehicles equipped with Electronic Stability Program (ESP). Hill hold is achieved in ESP by applying the…
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CUTTING TOOL, ELECTRICAL, WIRE CUTTING WITH CURVED JAWS, HAND ACTUATED, TYPE I, WIRE SIZES 26 THROUGH 1/0

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS6173/3
  • Current
Published 2018-12-07 by SAE International in United States
No Abstract Available.
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CRIMPING TOOL, TERMINAL, HAND, ACTUATED, WIRE TERMINATION, IN-SERVICE INSPECTION GAGE FOR AS22520/5, /37, /38, AND /44 CRIMP TOOLS

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS22520/39A
  • Current
Published 2018-11-21 by SAE International in United States
No Abstract Available.
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CRIMPING TOOL, TERMINAL, HAND ACTUATED, WIRE TERMINATION, TYPE II, FOR FLAG SHAPE LUG TERMINAL SIZES 22-10

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS22520/47
  • Current
Published 2018-10-09 by SAE International in United States
No Abstract Available.
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Braking Performance - Asphalt Pavers

OPTC2, Braking
  • Ground Vehicle Standard
  • J2118_201810
  • Current
Published 2018-10-04 by SAE International in United States
This SAE Standard specifies brake system performance and test criteria to enable uniform evaluation of the braking capability of self-propelled, rubber-tired and tracked asphalt pavers. Service, secondary, and parking brakes are included.
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Coating Requirements for Aerospace Hand Tools

EG-1B Hand Tools Committee
  • Aerospace Standard
  • AS4984B
  • Current
Published 2018-09-26 by SAE International in United States
This SAE Aerospace Standard (AS) covers requirements for nickel-chromium coatings, black oxide or black phosphate coatings, and alternative coatings for aerospace hand tools.
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Orientation of Engine Axis, Coordinate and Numbering Systems for Aircraft Gas Turbine Engines

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • ARP246D
  • Current
Published 2018-09-11 by SAE International in United States
Orientation of the engine, engine axis and coordinate system referred to herein shall be the conventional terminology used in all references to aircraft gas turbine engines.
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Rolling Element Test Method for Axial Limit and Fracture Load Testing

ACBG Rolling Element Bearing Committee
  • Aerospace Standard
  • ARP5483/4A
  • Current
Published 2018-08-23 by SAE International in United States
This test method outlines the recommended procedure for performing static axial limit and ultimate load tests on rolling element bearings used in airframe applications. Bearings covered by this document shall be antifriction ball bearings and spherical roller bearings in either annular or rod end configurations.
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