The Correlation of Model Testing and Full Scale Trials Resistance of High Speed Catamarans

1999 ◽  
Author(s):  
N A Armstrong
Keyword(s):  
High Speed ◽  
Model Testing ◽  
Full Scale

Lessons Learned from Full-Scale Seakeeping Trial Acceleration Data for HighSpeed Planing Craft and Implications for Scale Model Testing

2017 ◽  
Author(s):  
Michael R. Riley ◽  
Timothy Coats
Keyword(s):  
High Speed ◽  
Impact Load ◽  
Maximum Load ◽  
Model Testing ◽  
Full Scale ◽  
Lessons Learned ◽  
Scale Model ◽  
Wave Impact ◽  
Acceleration Data ◽  
Hull Structure

This paper summarizes lessons learned from analyzing acceleration data recorded during full-scale seakeeping trials of high speed craft. Applications using a consistent maximum wave impact load approach in different areas of interest, including hull structure, shock isolation seat evaluation, and equipment ruggedness criteria are presented. The lessons learned and the maximum load applications suggest that there are implications for scale model testing and computational fluid dynamics.

Software-Hardware Complex for Design, Full-Scale and Model Testing the Broadband Systems in Radio Communications, Radars and Navigation of High-Speed Objects

2021 ◽  
Vol 64 (3) ◽  
pp. 363-369
Author(s):  
O. V. Bolkhovskaya ◽  
A. V. Elokhin ◽  
A. O. Kokarev ◽  
V. S. Sergeev ◽  
I. S. Sorokin ◽  
...  
Keyword(s):  
High Speed ◽  
Model Testing ◽  
Full Scale ◽  
Radio Communications ◽  
Hardware Complex

Full-Scale Model Testing on Ballasted High-Speed Railway: Dynamic Responses and Accumulated Settlements

2018 ◽  
Vol 2672 (10) ◽  
pp. 125-135 ◽  
Author(s):  
Wei Li ◽  
Xuecheng Bian ◽  
Xiang Duan ◽  
Erol Tutumluer
Keyword(s):  
High Speed ◽  
Stable State ◽  
Model Testing ◽  
Full Scale ◽  
Dynamic Responses ◽  
Scale Model ◽  
Vibration Velocity ◽  
Track Structure ◽  
High Speed Railway ◽  
Soil Stress

High-speed trains generate much higher vibrations in track structures than conventional trains and intensive train passages (e.g., on the Beijing–Shanghai high-speed railway line where the train passage interval is less than 5 minutes) cause accumulated permanent settlement in the railway track substructures, which will decrease track performance and jeopardize the safety of trains. Since very few field measurements on ballasted high-speed railways are available in literature, this paper presents experimental results of vibration velocity, dynamic soil stress, and the accumulated settlement of a ballasted high-speed railway from a full-scale model testing facility with simulated trains moving loads at various speeds. A portion of a realistic ballasted railway consisting of track structure, ballast layer, subballast, embankment, and piled foundation was constructed in a larger box. An eight-actuator sequential loading system was used to generate equivalent vertical loadings on the track structure for simulating the dynamic excitations due to train movements. Dynamic stresses measured in the track substructure layers (ballast, subballast, and embankment) were found to be strongly dependent on train speeds especially for speeds higher than 144 km/h. It was found that both the vibration velocity and the dynamic soil stress were greatly amplified as the train speed increased to 300 km/h, and the ballast layer effectively reduced the vibrations transmitted from the track structure to underlying soil. The accumulated settlement of the substructure did not reach a stable state even after 100,000 moving train loads at a speed of 300 km/h.

Full-scale model testing on a ballastless high-speed railway under simulated train moving loads

2014 ◽  
Vol 66 ◽  
pp. 368-384 ◽  
Author(s):  
Xuecheng Bian ◽  
Hongguang Jiang ◽  
Chong Cheng ◽  
Yunmin Chen ◽  
Renpeng Chen ◽  
...  
Keyword(s):  
High Speed ◽  
Model Testing ◽  
Full Scale ◽  
Scale Model ◽  
Moving Loads ◽  
High Speed Railway

Slam load estimation for high-speed catamarans in irregular head seas by full-scale computational fluid dynamics

2021 ◽  
Vol 234 ◽  
pp. 109160
Author(s):  
Islam Almallah ◽  
Jason Ali-Lavroff ◽  
Damien S. Holloway ◽  
Michael R. Davis
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
High Speed ◽  
Full Scale ◽  
Load Estimation

New Energy-Absorbing High-Speed Safety Barrier

2003 ◽  
Vol 1851 (1) ◽  
pp. 53-64 ◽  
Author(s):  
John D. Reid ◽  
Ronald K. Faller ◽  
Jim C. Holloway ◽  
John R. Rohde ◽  
Dean L. Sicking
Keyword(s):  
High Speed ◽  
Steel Tube ◽  
Full Scale ◽  
Element Analysis ◽  
Dynamic Component ◽  
Testing Program ◽  
Roadside Safety ◽  
New Energy ◽  
University Of Nebraska Lincoln ◽  
Energy Absorbing

For many years, containment for errant racing vehicles traveling on oval speedways has been provided through rigid, concrete containment walls placed around the exterior of the track. However, accident experience has shown that serious injuries and fatalities may occur through vehicular impacts into these nondeformable barriers. Because of these injuries, the Indy Racing League and the Indianapolis Motor Speedway, later joined by the National Association for Stock Car Auto Racing (NASCAR), sponsored the development of a new barrier system by the Midwest Roadside Safety Facility at the University of Nebraska–Lincoln to improve the safety of drivers participating in automobile racing events. Several barrier prototypes were investigated and evaluated using both static and dynamic component testing, computer simulation modeling with LS-DYNA (a nonlinear finite element analysis code), and 20 full-scale vehicle crash tests. The full-scale crash testing program included bogie vehicles, small cars, and a full-size sedan, as well as Indy Racing League open-wheeled cars and NASCAR Winston Cup cars. A combination steel tube skin and foam energy-absorbing barrier system, referred to as the SAFER (steel and foam energy reduction) barrier, was successfully developed. Subsequently, the SAFER barrier was installed at the Indianapolis Motor Speedway in advance of the running of the 2002 Indianapolis 500 race. From the results of the laboratory testing program as well as analysis of the accidents into the SAFER barrier occurring during practice, qualification, and the race, the SAFER barrier has been shown to provide improved safety for drivers impacting the outer walls.

Sign in / Sign up

Export Citation Format

Share Document