Side Impact Motor Vehicle Structural Characteristics From Crash Tests

2003 ◽  
Author(s):  
Geoffrey J. Germane ◽  
Tyler S. Munson ◽  
Kevin C. Henry
Keyword(s):  
Motor Vehicle ◽  
Structural Characteristics ◽  
Side Impact ◽  
Crash Tests

Side-Impact Crash Test and Evaluation Criteria for Roadside Safety Hardware

1998 ◽  
Vol 1647 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Malcolm H. Ray ◽  
Martin W. Hargrave ◽  
John F. Carney ◽  
K. Hiranmayee
Keyword(s):  
Impact Test ◽  
Motor Vehicle ◽  
Evaluation Criteria ◽  
The United States ◽  
Side Impact ◽  
Roadside Safety ◽  
Test And Evaluation ◽  
Evaluation Procedures ◽  
Roadside Hardware ◽  
Crash Tests

During the past decade, reducing the severity of side-impact collisions has been an emerging area of research by a variety of organizations and research communities. The motor vehicle manufacturing and regulatory communities in the United States, Europe, and many other countries have developed dynamic side-impact test and evaluation criteria to reduce the severity of vehicle-to-vehicle side-impact collisions. Similarly, the international research community has developed test procedures for performing impacts into poles, one of the most severe types of side-impact collisions. Preliminary side-impact test and evaluation procedures have been conducted for roadside safety hardware, like guardrails, guardrail terminals, luminaire supports, utility poles, and signs. Recommendations for performing roadside hardware side-impact crash tests are summarized; the results of several side-impact roadside hardware crash tests are described; the proposed test and evaluation procedures are compared with other major side-impact test and evaluation procedures; and areas requiring further research are discussed.

Door Latch Failure Risk Identification Using Virtual Testing Methods

2017 ◽  
Vol 4 (3) ◽  
Author(s):  
Keith Friedman ◽  
Khanh Bui ◽  
John Hutchinson
Keyword(s):  
Motor Vehicle ◽  
Performance Testing ◽  
Risk Identification ◽  
Side Impact ◽  
Crash Test ◽  
Loading Conditions ◽  
Passenger Vehicle ◽  
Virtual Testing ◽  
Side Door ◽  
Failure Loads

Vehicle door latch performance testing presently utilizes uniaxial quasi-static loading conditions. Current technology enables sophisticated virtual testing of a broad range of systems. Door latch failures have been observed in vehicles under a variety of conditions. Typically, these conditions involve multi-axis loading conditions. The loading conditions presented during rollovers on passenger vehicle side door latches have not been published. Rollover crash test results, rollover crashes, and physical Federal Motor Vehicle Safety Standard (FMVSS) 206 latch testing results are reviewed. The creation and validation of a passenger vehicle door latch model is described. The multi-axis loading conditions observed in virtual rollover testing at the latch location are characterized and applied to the virtual testing of a latch in the secondary latch position. The results are then compared with crash test and real world rollover results for the same latch. The results indicate that a door latch that meets the secondary latch position requirements may fail at loads substantially below the FMVSS 206 uniaxial failure loads. In the side impact mode, risks associated with door handle designs and the potential for inertial release can be considered prior to manufacturing with virtual testing. An example case showing the effects of material and spring selection illustrates the potential issues that can be detected in advance of manufacturing. The findings suggest the need for re-examining the relevance of existing door latch testing practices in light of the prevalence of rollover impacts and other impact conditions in today's vehicle fleet environment.

A Sub-System Test Methodology for Simulating EEVC Side Impact

2000 ◽  
Author(s):  
Krishnakanth Aekbote ◽  
Srinivasan Sundararajan ◽  
Joseph A. Prater ◽  
Joe E. Abramczyk
Keyword(s):  
Full Scale ◽  
Test Method ◽  
Side Impact ◽  
Vehicle Body ◽  
Crash Test ◽  
Vehicle Performance ◽  
Test Methodology ◽  
Supporting Frame ◽  
The Impact ◽  
Crash Tests

Abstract A sled based test method for simulating full-scale EEVC (European) side impact crash test is described in this paper. Both the dummy (Eurosid-1) and vehicle structural responses were simulated, and validated with the full-scale crash tests. The effect of various structural configurations such as foam filled structures, material changes, rocker and b-pillar reinforcements, advanced door design concepts, on vehicle performance can be evaluated using this methodology at the early stages of design. In this approach, an actual EEVC honeycomb barrier and a vehicle body-in-white with doors were used. The under-hood components (engine, transmission, radiator, etc.), tires, and the front/rear suspensions were not included in the vehicle assembly, but they were replaced by lumped masses (by adding weight) in the front and rear of the vehicle, to maintain the overall vehicle weight. The vehicle was mounted on the sled by means of a supporting frame at the front/rear suspension attachments, and was allowed to translate in the impact direction only. At the start of the simulation, an instrumented Eurosid-1 dummy was seated inside the vehicle, while maintaining the same h-point location, chest angle, and door-to-dummy lateral distance, as in a full-scale crash test. The EEVC honeycomb barrier was mounted on another sled, and care was taken to ensure that weight, and the relative impact location to the vehicle, was maintained the same as in full-scale crash test. The Barrier impacted the stationary vehicle at an initial velocity of approx. 30 mph. The MDB and the vehicle were allowed to slide for about 20 inches from contact, before they were brought to rest. Accelerometers were mounted on the door inner sheet metal and b-pillar, rocker, seat cross-members, seats, and non-struck side rocker. The Barrier was instrumented with six load cells to monitor the impact force at different sections, and an accelerometer for deceleration measurement. The dummy, vehicle, and the Barrier responses showed good correlation when compared to full-scale crash tests. The test methodology was also used in assessing the performance/crashworthiness of various sub-system designs of the side structure (A-pillar, B-pillar, door, rocker, seat cross-members, etc.) of a passenger car. This paper concerns itself with the development and validation of the test methodology only, as the study of various side structure designs and evaluations are beyond the scope of this paper.

scholarly journals Children in Side Impact Motor Vehicle Crashes

2003 ◽  
Vol 8 (suppl_B) ◽  
pp. 49B-50B
Author(s):  
A Howard ◽  
L Rothman ◽  
A Moses McKeag
Keyword(s):  
Motor Vehicle ◽  
Side Impact ◽  
Motor Vehicle Crashes ◽  
Vehicle Crashes

Crash Tests and the Loads over Driver Head in Different Side Impact Cases

2016 ◽  
Vol 823 ◽  
pp. 181-186 ◽  
Author(s):  
Nicolae Ispas ◽  
Mircea Nastasoiu
Keyword(s):  
Head Injury ◽  
Real World ◽  
Traffic Accidents ◽  
Side Impact ◽  
Passive Safety ◽  
Occupant Safety ◽  
The Real ◽  
Occupant Protection ◽  
Head Injury Criterion ◽  
Crash Tests

Car occupant protection in traffic accidents is a key target of today cars manufacturers. Known as active or passive safety, many technological solutions were developing over the time for an actual better car’s occupant safety. In the real world, in traffic accidents are often involved cars from different generations with various safety historical solutions. The aims of these papers are to quantify the influences over the car driver head loads in cases of different generation of cars involved in side crashes. For each case the experimental load results can be future used to calculate Head Injury Criterion (HIC) [1]

Is Bigger Better? The Effect of Obesity on Pelvic Fractures After Side Impact Motor Vehicle Crashes

2009 ◽  
Vol 67 (4) ◽  
pp. 709-714 ◽  
Author(s):  
Vishal Bansal ◽  
Carol Conroy ◽  
Jeanne Lee ◽  
Alexandra Schwartz ◽  
Gail Tominaga ◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Pelvic Fractures ◽  
Side Impact ◽  
Motor Vehicle Crashes ◽  
Vehicle Crashes

A Numerical Analysis of Pre-Deployment Effect of Side-Impact Airbags in Reducing Occupant Injuries

2013 ◽  
Author(s):  
Yi Yang Tay ◽  
Rasoul Moradi ◽  
Hamid M. Lankarani
Keyword(s):  
Numerical Analysis ◽  
High Speed ◽  
Motor Vehicle ◽  
Side Impact ◽  
Element Analysis ◽  
Vehicle Accidents ◽  
Injury Criteria ◽  
Acceleration Sensors ◽  
Head Injury Criteria ◽  
Occupant Injuries

Side impact collisions represent the second greatest cause of fatality in motor vehicle accidents. Side-impact airbags (SABs), though not mandated by NHTSA, have been installed in recent model year vehicle due to its effectiveness in reducing passengers’ injuries and fatality rates. However, the increase in number of frontal and side airbags installed in modern vehicles has concomitantly led to the rise of airbag related injuries. A typical side-impact mechanical or electronic sensor require much higher sensitivity due to the limited crush zones making SABs deployment more lethal to out-of-position passengers and children. Appropriate pre-crash sensing needs to be utilized in order to properly restraint passengers and reduce passengers’ injuries in a vehicle collision. A typical passenger vehicle utilizes sensors to activate airbag deployment when certain crush displacement, velocity and or acceleration threshold are met. In this study, it is assumed that an ideal pre-crash sensing system such as a combination of proximity and velocity and acceleration sensors is used to govern the SAB pre-deployment algorithm. The main focus of this paper is to provide a numerical analysis of the benefit of pre-deploying SAB in lateral crashes in reducing occupant injuries. The effectiveness of SABs at low and high speed side-impact collisions are examined using numerical Anthropomorphic Test Dummy (ATD) model. Finite Element Analysis (FEA) is primarily used to evaluate this concept. Velocities ranging from 33.5mph to 50mph are used in the FEA simulations. The ATD used in this test is the ES-2re 50th percentile side-impact dummy (SID). Crucial injury criteria such as Head Injury Criteria (HIC), Thoracic Trauma Index (TTI), and thorax deflection are computed for the ATD and compared against those from a typical airbag system without pre-crash sensing. It is shown that the pre-deployment of SABs has the potential of reducing airbag parameters such as deployment velocity and rise rate that will directly contribute to reducing airbag related injuries.

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