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Honda R&D Technical Review is a periodical containing research papers related to Honda R&D Center activities worldwide that cover automobile, motorcycle, power products, aircraft engine, and other fundamental technologies. Honda Motor offers a book for the April 2021 issue with 104 pages containing 12 papers focusing on the following latest topics: Technology for Prediction of Contactor Noise for Electric-powered Vehicle Batteries Reduction of Internal Resistance in High Capacity Lithium-ion Batteries with 3D Lattice-structured Electrode Predictive Technique for Seat Belt Submarining Injury by Triaxial Iliac Load Cell

The 16 papers in this technical paper colection present advancement of auto safety-related technologies that deal with roof crush testing, pedestrian safety, front, side and rear impact, simulation of interior head impact, FE study of factors on risk of KTH injuries in frontal impact, CAE methods and testing, and field modeling and assessment techniques.

This technical paper collection contains 20 papers presenting new technologies and research in the area of vehicle rear-end collision, rollover collision and lateral impacts. Papers may be related to analysis of crash compatibility, statistical data analysis, design of vehicle systems, biomechanics and dummy development. To see a listing of papers included in this special publication, click on the papers link below.

The field of motor vehicle rollover research and testing has been one of multiple and varied approaches, dating back to at least the 1930's. The approach has been as simple as tipping a vehicle over at the top of a steep hill ( Wilson et al., 1972 ), to as complex as releasing a vehicle from an elevated roll spit mounted to the rear of a moving tractor and trailer ( Cooper et al., 2001 and Carter et al., 2002 ). Presenter Peter Luepke, P Luepke Consulting

Real-time simulation of truck and trailer combinations can be applied to hardware-in-the-loop (HIL) systems for developing and testing electronic control units (ECUs). The large number of configuration variations in vehicle and axle types requires the simulation model to be adjustable in a wide range. This paper presents a modular multibody approach for the vehicle dynamics simulation of single track configurations and truck-and-trailer combinations. The equations of motion are expressed by a new formula which is a combination of Jourdain's principle and the articulated body algorithm. With the proposed algorithm, a robust model is achieved that is numerically stable even at handling limits. Moreover, the presented approach is suitable for modular modeling and has been successfully implemented as a basis for various system definitions. As a result, only one simulation model is needed for a large variety of track and trailer types.

The use of Engine Health Management (EHM) systems has been growing steadily in both the civilian and the military aerospace sectors. Barring a few notable exceptions (such as certain temperature and thrust margin monitoring) regulatory authorities around the world have not required these systems to be certified in any way. This is changing rapidly. New airframes and engines are increasingly being designed with the assumption that EHM will be an integral part of the way customers will operate these assets. This leads to a need for better guidelines on how such systems should be certified. The SAE E-32 committee on Propulsion System Health Monitoring is leading an industry-wide effort to develop a set of guidelines for certifying EHM systems.

In Aeronautic industry, when we launch a new industrialization for an aircraft sub assembly we always have the same questions in mind for drilling operations, especially when focusing on lean manufacturing. How can we avoid dismantling and deburring parts after drilling operation? Can a drilling centre perform all the tasks needed to deliver a hole ready to install final fastener? How can we decrease down-time of the drilling centre? Can a drilling centre be integrated in a pulse assembly line? How can we improve environmental efficiency of a drilling centre? It is based on these main drivers that AIRBUS has developed, with SPIE and SOS, a new generation of drilling centre dedicated for hard materials such as titanium, and high thicknesses. The first application was for the assembly of the primary structure of A350 engine pylons. The main solution that was implemented meeting several objectives was the development of orbital drilling technology in hard metal stacks.

The 31 papers in this technical paper collection cover topics such as steering system development, power steering systems, steer-by-wire systems, EPS, suspension systems, tires, and more.

The 19 papers in this technical paper collection cover vehicle brake system performance, vehicle brake noise, antilock braking control of electric vehicles, enhanced traction stability control systems, and more.

The 22 papers in this technical paper collection detail tire and wheel technology, tire rolling resistance, tire sidewall cooling, and features a series of papers relating to "aged tire durability". Also included are vehicle dynamics and simulation papers focusing on vehicle stability and control; vehicle sub-systems modeling and responses; advances in vehicle systems dynamics; vehicle motion simulations and analysis; and vehicle dynamics analysis.

The 33 papers in this technical paper collection discuss vehicle dynamics and simulation in the areas of vehicle rollover, tire forces/moments and vehicle stability, vehicle dynamics handling and control, advances in methods for vehicle systems design and control, and advances in vehicle dynamics measurements and validations.

The 30 papers in this technical paper collection focus on heavy tire modeling/testing and evaluation; vehicle dynamics; wide based tires, sustainability and maintenance; air suspension, off-road chassis and suspension; hybrid drive and chassis; all wheel/multi-wheel drive vehicle dynamics and performance; testing and experimental analysis of chassis and suspension; and advanced chassis control and rollover.

The 20 papers in this technical paper collection discuss vehicle dynamics stability and control. Topics covered include: rollover crashes involving passenger cars with and without electronic stability control (ESC) systems; yaw rate control systems; optimizing vehicle dynamics control systems in offset impacts; hardware in the loop simulation; reducing deceleration disturbances; and more.

The 23 papers in this technical paper collection address occupant protection with regards to rear impact, rollover, and side impact. Topics include: the effectiveness of curtain side air bags; side impact sensing calibration; door side impact countermeasure; off-road rollover dynamics; steer-induced rollovers; estimating variation in roof strength; occupant pocketing kinematics during whiplash assessments; rear occupant head restraint interaction in high-severity rear impact using BioRID and HIII; and more.

The 13 papers in this technical paper collection look at occupant protection in terms of structural crashworthiness and safety test methodology. Topics covered include: crash energy in vehicle-to-vehicle (VTV) impacts; plastic beams for automobile low-speed rear impact; evaluation of dynamic roof deformation in rollover crash tests; vehicle integrated non-intrusive monitoring of driver biological signals; and more.

The 23 papers in this technical paper collection discuss vehicle dynamics, stability and control. Topics covered include regenerative braking and anti-lock braking, power steering system parameters, roll simulator, sway stability, optimal torque vectoring, and more. The 22 papers in this technical paper collection discuss vehicle dynamics, stability and control. Topics covered include regenerative braking and anti-lock braking, power steering system parameters, roll simulator, sway stability, optimal torque vectoring, and more.

The 22 papers in this technical paper collection discuss occupant safety, including rollover and side impact, safety test methodology, and structural crashworthiness. Topics covered included vehicle design, restraint systems design, crash test analysis, CAE simulations and statistical trends analysis, post-crash pedestrian kinematics, and more. The 23 papers in this technical paper collection discuss occupant safety, including rollover and side impact, safety test methodology, and structural crashworthiness. Topics covered included vehicle design, restraint systems design, crash test analysis, CAE simulations and statistical trends analysis, post-crash pedestrian kinematics, and more.