Assessment of the Thor and Hybrid III Crash Dummies: Steering Wheel Rim Impacts to the Upper Abdomen

2004 ◽  
Author(s):  
Greg Shaw ◽  
David Lessley ◽  
Jim Bolton ◽  
Jeff Crandall
Keyword(s):  
Steering Wheel ◽  
Wheel Rim ◽  
Hybrid Iii ◽  
Crash Dummies ◽  
Upper Abdomen

Improving Hybrid III Injury Assessment in Steering Wheel Rim to Chest Impacts Using Responses from Finite Element Hybrid III and Human Body Model

2013 ◽  
Vol 15 (2) ◽  
pp. 196-205 ◽  
Author(s):  
Kristian Holmqvist ◽  
Johan Davidsson ◽  
Manuel Mendoza-Vazquez ◽  
Peter Rundberget ◽  
Mats Y. Svensson ◽  
...  
Keyword(s):  
Finite Element ◽  
Human Body ◽  
Steering Wheel ◽  
Human Body Model ◽  
Body Model ◽  
Wheel Rim ◽  
Hybrid Iii ◽  
Injury Assessment

The Effect of Vehicles Steering Tilt Angle Impact Human Thorax

2013 ◽  
Vol 397-400 ◽  
pp. 585-588
Author(s):  
Zhi Hua Cai ◽  
Feng Chong Lan ◽  
Ji Qing Chen
Keyword(s):  
Finite Element ◽  
Contact Force ◽  
Tilt Angle ◽  
Head Injuries ◽  
Steering Wheel ◽  
Human Body Model ◽  
Body Model ◽  
Frontal Impacts ◽  
Wheel Rim ◽  
Human Thorax

Thorax injuries are common in vehicular accidents, second only to head injuries. Unbelted drivers of vehicles are more likely to suffer thorax injuries from steering wheel contact in frontal impacts. The objective of this study is to investigate the effects the steering wheel tilt angle (0, 20, 40, and 60) impact to the thorax of human body model with respect to thorax deflection and steering wheel rim contact interaction. To understanding of the human thorax sensitivity to steering wheel tilt angle on the force and deflection response using finite element simulations. It was found that the thorax response is sensitive to changes in steering wheel tilt angle. The contact force, Sternal displacement were the key parameters to be observed and compared. The results show that the contact force increased when the steering wheel tilt angle was bigger, the response was quicker. Low steering wheel tilt resulted in greater deformation. The greater the contact force, the deformation of the sternum but reduced when thorax impact the steering wheel, According to ECE R12 steering wheel regulation ,use force regulations to assessment the injury of the thorax is not accurate enough when human thorax impact the steering wheel.

A Prototype Steering Weave Stabilizer for Automobiles

1991 ◽  
Vol 113 (1) ◽  
pp. 138-142 ◽  
Author(s):  
J. C. Whitehead
Keyword(s):  
High Speed ◽  
Steering System ◽  
Lateral Acceleration ◽  
Steering Wheel ◽  
Phase Lag ◽  
Vehicle Speed ◽  
Control Torque ◽  
Concentrated Mass ◽  
Wheel Rim ◽  
The Difference

A prototype high-speed steering stabilizer for automobiles applies transient steering torques so that the sum of natural steering restoring torque and the control torque is more nearly in phase with steer angle than the natural restoring torque alone. The resulting reduction in the phase lag from steer angle to restoring torque mitigates the steering weave mode. Since steering restoring torque is nearly proportional to vehicle lateral acceleration, weave controller circuitry could subtract instantaneous lateral acceleration from expected steady-state lateral acceleration calculated from steer angle and vehicle speed, and thence command a steering torque actuator depending on the difference signal. The prototype performs the same function using a concentrated mass on the lower steering wheel rim which is passively sensitive to both steer angle and lateral acceleration, thereby applying only transient steering torques in the desired manner at a vehicle speed of 30 m/s. The additional steering system inertia alone affects the weave mode, so a non-stabilizing configuration with the same mass distributed around the steering wheel rim is tested for direct comparison. The experimental data show a dramatic stabilization of weave for the configuration which applies control torque.

The Vehicle’s Frontal Impact Influence on Driver in out of Position

2015 ◽  
Vol 772 ◽  
pp. 84-89
Author(s):  
Oana Victoria Oţăt ◽  
Nicolae Dumitru
Keyword(s):  
Rigid Wall ◽  
Steering Wheel ◽  
Frontal Impact ◽  
Contrastive Study ◽  
Impact Simulation ◽  
Vehicle Collision ◽  
Hybrid Iii ◽  
Oriented Approach ◽  
Over Time ◽  
Selection Of

The present paper underpins a contrastive study of the driver’s behavior and the injuries suffered in frontal vehicle collision, with a focus on the analysis of head-specific injuries. Four different simulation cases have been performed by means of the LS-DYNA software, where a seated belted and/or unbelted Hybrid III 50th percentile male dummy was in turns normally-positioned and out of position. Accordingly, both the analyses as well as the numerical simulation have been completed by applying a five-component model that encompasses: the dummy, the seat, the seatbelt, the steering wheel and the airbag. The assembly’s prescribed motion has been defined following a frontal Virtual Crash software-based impact simulation of a mid-size sedan at a velocity of 50 km/h against a rigid wall. The results analysis aimed at identifying the longitudinal variation laws over time in head displacements and accelerations as well as lateral motion. Admittedly, the results analysis certified that a more controlled-oriented approach to the selection of the driver’s normal positioning is a prerequisite in compliance with typical driving particularities.

Real-Time Detection of Drowsiness Related Lane Departures Using Steering Wheel Angle

2012 ◽  
Author(s):  
Anthony D. McDonald ◽  
Chris Schwarz ◽  
John D. Lee ◽  
Timothy L. Brown
Keyword(s):  
Real Time ◽  
Steering Wheel ◽  
Real Time Detection

An Investigation of Hybrid III and Living Human Drop Tests

2000 ◽  
Vol 28 (1-2) ◽  
pp. 219-223 ◽  
Author(s):  
Keith Friedman ◽  
Fiona Gaston ◽  
Jack Bish ◽  
Donald Friedman ◽  
Anthony Sances, Jr.
Keyword(s):  
Hybrid Iii ◽  
Drop Tests

Fore-Aft Forces in Tire-Wheel Assemblies Generated by Unbalances and the Influence of Balancing

1991 ◽  
Vol 19 (3) ◽  
pp. 142-162 ◽  
Author(s):  
D. S. Stutts ◽  
W. Soedel ◽  
S. K. Jha
Keyword(s):  
Mathematical Model ◽  
Elastic Foundation ◽  
Torsional Oscillation ◽  
Vertical Direction ◽  
Torsional Stiffness ◽  
Rolling Motion ◽  
Vertical Force ◽  
Horizontal Force ◽  
Wheel Rim ◽  
Open Question

Abstract When measuring bearing forces of the tire-wheel assembly during drum tests, it was found that beyond certain speeds, the horizontal force variations or so-called fore-aft forces were larger than the force variations in the vertical direction. The explanation of this phenomenon is still somewhat an open question. One of the hypothetical models argues in favor of torsional oscillations caused by a changing rolling radius. But it appears that there is a simpler answer. In this paper, a mathematical model of a tire consisting of a rigid tread ring connected to a freely rotating wheel or hub through an elastic foundation which has radial and torsional stiffness was developed. This model shows that an unbalanced mass on the tread ring will cause an oscillatory rolling motion of the tread ring on the drum which is superimposed on the nominal rolling. This will indeed result in larger fore-aft than vertical force variations beyond certain speeds, which are a function of run-out. The rolling motion is in a certain sense a torsional oscillation, but postulation of a changing rolling radius is not necessary for its creation. The model also shows the limitation on balancing the tire-wheel assembly at the wheel rim if the unbalance occurs at the tread band.

Sign in / Sign up

Export Citation Format

Share Document