Rollover Crash Test Results: Steer-Induced Rollovers

2011 ◽  
Author(s):  
Don C. Stevens ◽  
Stephen Arndt ◽  
Leda Wayne ◽  
Mark Arndt ◽  
Robert Anderson ◽  
...  
Keyword(s):  
Crash Test ◽  
Test Results ◽  
Rollover Crash

Virtual Testing Applied to Door Latch Performance Evaluation

2016 ◽  
Author(s):  
Keith Friedman ◽  
Khanh Bui ◽  
John Hutchinson ◽  
Matthew Stephens
Keyword(s):  
Crash Test ◽  
Loading Conditions ◽  
Test Results ◽  
Passenger Vehicle ◽  
Virtual Testing ◽  
Side Door ◽  
Failure Loads ◽  
Vehicle Fleet ◽  
Rollover Crash ◽  
Minimum Force

Vehicle door latch minimum force capability testing presently utilizes uniaxial quasi-static loading conditions created toward the middle of the last century. Current technology enables more 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 multiple axis loading conditions. The loading conditions presented during rollovers on passenger vehicle side door latches are not currently evaluated. Background on these conditions is reviewed. Rollover crash test results, rollover crashes and physical FMVSS 206 latch testing are reviewed. In this paper, 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. These loads are then applied to the virtual testing of a latch in both the secondary and primary latch positions. The results are then compared with crash test and real world rollover results for the same latch. The results indicate that while a door latch in the secondary latch position may meet minimum existing uniaxial horizontal plane loading requirements, the incorporation of multi-axis loading conditions may result in failure of the latch to accomplish its intended purpose at loads substantially below the FMVSS 206 uniaxial failure loads. The findings suggest the need for reexamining 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.

Cable and Wire Rope Barrier Design Considerations: Review

2003 ◽  
Vol 1851 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Dean C. Alberson ◽  
Roger P. Bligh ◽  
C. E. Buth ◽  
D. Lance Bullard
Keyword(s):  
Cost Effective ◽  
Wire Rope ◽  
Crash Test ◽  
Test Results ◽  
Initial Tension ◽  
Wire Ropes ◽  
Serious Injuries ◽  
Horizontal Curvature ◽  
Crash Tests ◽  
Design Scenario

Cable or wire rope barrier was being used in the 1940s and maybe earlier for vehicle containment. Through the years the designs have changed, but engineers continue to see cable barrier as an inexpensive barrier for use in some roadside applications. Recently, cable or wire rope has gained popularity as a median barrier for the prevention of cross-median accidents. Cross-median accidents are typically violent collisions with a high probability of multiple serious injuries and deaths. Thus, the design trend is gravitating toward providing positive vehicle containment in wider medians for which barriers have not historically been warranted. Wire rope often provides a cost-effective solution for this design scenario. Field experience with cable or wire rope barriers has identified areas for design improvement. It is desirable that cables remain taut to improve interaction with the vehicle, reduce dynamic deflections, and minimize maintenance. Additionally, reduced design deflections result in more potential application sites. Recent research demonstrates that such improvements are practical and cost-effective. Besides the initial tension in the wire ropes, other factors that can have a significant influence on dynamic deflections include post spacing and horizontal curvature. Computer simulations with cable barriers with various post spacings and horizontal curvatures were used to develop guidelines for expected design deflections. Finally, full-scale crash tests were completed with a new, cost-effective cable terminal system, and a brief review of the design and crash test results is included.

INVESTIGATING THE EFFECT OF SLOSHING ON THE ENERGY ABSORPTION OF TANK WAGONS CRASH

2015 ◽  
Vol 39 (2) ◽  
pp. 187-200 ◽  
Author(s):  
Reza Razaghi ◽  
Majid Sharavi ◽  
Mohammad Mahdi Feizi
Keyword(s):  
Energy Absorption ◽  
Solution Method ◽  
Crash Test ◽  
Test Results ◽  
Software Simulation ◽  
Fluid Sloshing ◽  
Mass Spring Model ◽  
Solution Methods ◽  
Height Increase ◽  
Mass Spring

One of the main fluid mechanics phenomena is fluid sloshing which is originated from the free surface of fluid and should be taken into account in design of fluid structures such as fuel tank wagons, ships and so on. The aim of this paper is to investigate the effect of tank fluid sloshing on energy absorption and reducing tank acceleration during the tank wagon impact. For this purpose, methods of software simulation and dynamics solution methods are accomplished. The assumed wagon includes a tank with the approximate volume of 95 m3 and capacity of 65 tons of fluid. Using finite element method, the tank impact is simulated based on the corresponding standards for different heights of fluid in the tank. Obtained results show fluid height increase has an inappropriate effect on energy absorption among impact however the more fluid in tank, the more time would be consumed for energy absorption in general. At the end, by using crash test results for a tank with aforementioned scale, validity of impact software simulation and dynamic solution method considering the tank fluid as mass-spring model are checked.

scholarly journals Repeatability of Full-Scale Crash Tests and Criteria for Validating Simulation Results

1996 ◽  
Vol 1528 (1) ◽  
pp. 155-160 ◽  
Author(s):  
Malcolm H. Ray
Keyword(s):  
Finite Element ◽  
Full Scale ◽  
Crash Test ◽  
Test Results ◽  
Finite Element Analyses ◽  
Element Analysis ◽  
Acceleration Time Histories ◽  
Time Histories ◽  
Simulation Results ◽  
Crash Tests

A method of comparing two acceleration time histories to determine whether they describe similar physical events is described. The method can be used to assess the repeatability of full-scale crash tests and it can also be used as a criterion for assessing how well a finite-element analysis of a collision event simulates a corresponding full-scale crash test. The method is used to compare a series of six identical crash tests and then is used to compare several finite-element analyses with full-scale crash test results.

Test Level 4 Bridge Rails

2000 ◽  
Vol 1720 (1) ◽  
pp. 80-94
Author(s):  
C. Eugene Buth ◽  
Wanda L. Menges ◽  
William F. Williams
Keyword(s):  
Full Scale ◽  
Safety Performance ◽  
Crash Test ◽  
Test Results ◽  
Recent Past ◽  
Design Specifications ◽  
Performance Requirements ◽  
Steel Tubing ◽  
Aashto Lrfd ◽  
Test Level

Design details and full-scale crash test results are presented for three bridge rails tested for compliance with NCHRP Report 350 Test Level 4 requirements. Designs of these rails are based on AASHTO LRFD Bridge Design Specifications. Each bridge rail consists of structural steel tubing rail elements mounted on wide-flange posts. The rails are generally stronger than many designs commonly used in the recent past. Full-scale crash test results demonstrated that all bridge rails meet NCHRP Report 350 safety performance requirements.

Tractor-Trailer Rollover Crash Test

2007 ◽  
Author(s):  
James Chinni ◽  
Michael Miller ◽  
Norman Taylor ◽  
Shu Yang
Keyword(s):  
Crash Test ◽  
Rollover Crash

Factors Contributing to Front-Side Compatibility: a Comparison of Crash Test Results

1999 ◽  
Author(s):  
Joseph M. Nolan ◽  
Michael R. Powell ◽  
Charles A. Preuss ◽  
Adrian K. Lund
Keyword(s):  
Crash Test ◽  
Test Results ◽  
Front Side

scholarly journals CAE Modeling Rubber-metal Body Mounting of the Body-on-frame Car in Crash Simulations

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Impact Test ◽  
Point Of View ◽  
The Body ◽  
Crash Test ◽  
Test Results ◽  
Rigid Connection ◽  
Metal Body ◽  
Stiffness Characteristics ◽  
The Impact ◽  
Crash Tests

The aim of the study was to research the behavior of the rubber-metal body mounting under various modeling options and to select the optimal, from the point of view of ensuring the accuracy of the results in the crash tests simulations. Body supports provide a link between the body and the car frame, and this has a critical effect on the impact test results of the car. The article discusses various options for modeling the body mounting by the degree of simplification from the simplest model with a rigid connection between the body and the frame to the model that takes into account the non-linearity of the stiffness characteristics of the supports, contact interaction between parts of the mounting and its surrounding parts, tension of the supports and failure. The results of virtual tests of a car with various options for modeling mountings were compared with the results of real tests. As a result of the study, a methodology for modeling the body supports was developed, which allows providing the necessary measurement error in virtual crash test modeling.

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