Temat: road crash - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of displacement of a concrete barrier on impact of a vehicle. theoretical model and experimental validation
Autorzy:: Prochowski, L.
Powiązania:: https://bibliotekanauki.pl/articles/247667.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
road safety
roadside crash
concrete barrier
safety barriers
Opis:: A vehicle hitting a traffic barrier creates a major threat to traffic safety as a result of displacement of components of the barrier by the forces transferred from the vehicle. We built a theoretical model of the dynamics of such processes and behaviour of concrete barriers set on various types of surfaces. We calculated the displacement as a function of vehicle impact energy and barrier base. We completed analytical approximation for our calculations and we referred the theoretical results to experimental test results. This validated our model of barrier and vehicle movement dynamics as fully qualified for use in the planning of safer barriers and evaluation of barrier effect on traffic. Basing on our calculations, we determined that a second-order polynomial can be used for describing the lateral displacement of a barrier placed on various types of surfaces for a wide range of impact energies (actually, from O to 120 kJ). The courses of the approximating function represent an efficient model for determining the maximum lateral displacement of a concrete barrier on impact of a B or C segment vehicle.
Źródło:: Journal of KONES; 2010, 17, 4; 399-406
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Crash tests of a car with modified road barriers
Autorzy:: Nowak, J.
Niezgoda, T.
Kiczko, A.
Gieleta, R.
Powiązania:: https://bibliotekanauki.pl/articles/247421.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
car - road barrier system
crash test
experimental examinations
Opis:: In this article experimental results of a car impact into a modified road barrier are presented. For crash tests a modified protection barrier SP-04, composed of guide poles, type B, and bridge posts IPE140, was chosen. The road barrier modification lies in using additional panels absorbing the impact energy. The protective panels, subjected to examination, consisted of a metal or a composite (laminate, glass-polyester) shield in which the f o amed aluminium or polyurethane foam was a filling. The Suzuki Swift car s were prepared for the crash tests. Tests were carried out at the Automotive Industry Institute (PIMOT) in Warsaw, with the use o f a test sample of the road barrier. For the safety sake the car's speed during the experimental examinations was limited to 50 km/h. Moreover, the vehicle hits perpendicularly in a properly modified road barrier's sector. During the test a registration of acceleration was carried out by the acceleration sensors placed in the car (among others in the centre of gravity and over the rear axle of a car). A crash test course of the system C-G was registered with the use of two cameras for fast shooting (Fantom v12). An image was recorded with the resolution of 1280 x 800 pixels and with frequency of 1000 shots per second. The shot exposure time equalled to 250 microseconds.
Źródło:: Journal of KONES; 2010, 17, 3; 333-339
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Prototype articulated joint in connections of the concrete protective barrier
Autorzy:: Borkowski, W.
Hryciów, Z.
Rybak, P.
Wysocki, J.
Powiązania:: https://bibliotekanauki.pl/articles/244656.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road safety
concrete protective barrier
crash test
articulated joint
Opis:: The work describes methodology of selection of a prototype articulated joint used to connect the segments of the concrete protection barrier. The barrier and the joint have been made according to the original project of the authors of this paper. Dimensions of the component elements of the joint were defined on the basis of numerical calculations in LS-DYNA system, using finite element method. They also allowed to identify places sensible to damage. Based on the project, the experimental tests have been performed for the joint strength to stretching. The tests performed on the resistance machine showed improper technology and poor quality of welds joining individual elements, particularly the bolt with connecting steel. Results of these tests made the basis for introducing the changes to the project. Repeated tests confirmed their rightness. The final evaluation of quality and usefulness of the prototype articulated joint in the connections of movable protection barrier were defined during the crash tests on the test track of the Certified Research Laboratory of the Research Institute for Roads and Bridges. The crash tests were performed for selected collision criteria (TB11 and TB32), normal restrain level (N2), using three passengers cars. Applied concrete barrier test procedures are in accordance with the requirements of national standards, that make the equivalents of the European standards.
Źródło:: Journal of KONES; 2011, 18, 1; 85-92
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Comparative analysis of frontal zone of deformation in vehicles with self-supporting and framed bodies
Autorzy:: Prochowski, L.
Żółtowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/247110.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road safety
vehicle safety
crash tests
body deformation range
Opis:: The work considers changes occurred in the features of the supporting structure in three categories of cars, namely: with the self-supporting body, framed body an intermediate structures between these two solutions. The area of analysis includes the length of deformation (crush) of the front al part of the car after collision with a rigid obstacle (barrier). The range of deformation is a significant factor of the passive car safety and indicates the efficiency of fulfilling the protective function for the passengers. The work shows absolute and relative (percentage and unit) variations of the car deformation, depending on the year of manufacture, including the period of 1980 - 2010. Marked trend lines indicated general nature of the deformation range variations together with the improvement of the car supporting system structures. The course of the trend line has been calculated on the basis of average deformation length values, calculated in defined periods of vehicle manufacture. Selected sections of time result from the division of the period of analysis 1980 - 2010 into six parts. The analysis of the deformation length of the frontal part of passenger cars, SUVs and pickups has been combined with simultaneous evaluation of total car length variations and their weight values. The car weight directly affects the kinetic energy of the impact so it has a significant influence on the range of deformation of the car front during collision with an obstacle.
Źródło:: Journal of KONES; 2011, 18, 4; 397-407
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: The analysis of occupant motion in frontal barrier impact of a chassis frame vehicle
Autorzy:: Prochowski, L.
Zielonka, K.
Żuchowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/244471.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road safety
vehicle safety
crash tests
frontal accidents
occupant kinematic
Opis:: Human body motion during a road accident usually results from the effect of forces of inertia. The analysis of that motion, particularly displacements towards the vehicle interior have significant practical aspect as it facilitates conclusions concerning the mechanisms of danger and injury formation. At the same time, the analysis provides direct indications regarding the improvement of passive safety equipment. The paper presents the time-space diagrams of motion of dummy’s head, neck, torso and hips – the driver of a frame chassis vehicle, identified on the basis of results of the measurements registered in frontal barrier impact and the frame-by-frame analysis of videos recorded during the course of experiment. Courses of these diagrams were associated with acceleration measurement results and forces affecting the parts of the dummy. The experiment showed the complex nature of the influence on the dummy caused by the forces of inertia after a collision of the vehicle with an barrier, vehicle body motion against the frame, reactions in the safety belts, friction on a seat and contact reaction of the vehicle interior equipment. At the same time, it presented the possibilities of indicating the courses of speed variations and dummy displacement as well as significant limitations of calculation possibilities that result from a fact that the process of the impact on the vehicle interior elements is hard to describe.
Źródło:: Journal of KONES; 2011, 18, 1; 491-502
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Analiza toru ruchu samochodu po uderzeniu w barierę betonową
The analysis of a car motion path after collision with a concrete barrier
Autorzy:: Prochowski, L.
Powiązania:: https://bibliotekanauki.pl/articles/301331.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: transport
bariera drogowa
bezpieczeństwo ruchu drogowego
zderzenia
road safety
safety barriers
roadside crash
Opis:: Analizie poddano przebieg toru ruchu samochodu po uderzeniu w betonową barierę drogową. Tor ruchu samochodu w fazie po zderzeniowej jest istotnym wskaźnikiem wypełniania funkcji ochronnej przez barierę. Wykorzystano tu model dynamiki procesu zderzenia i deformacji samochodu uderzającego w barierę oraz ruchu tej bariery. Model przedstawiono w pracy [7]. Przeprowadzono obliczenia, które pokazały wpływ kąta uderzenia i energii uderzenia na tor ruchu samochodu po zakończeniu fazy kontaktu z barierą. Obliczenia wykonano z uwzględnieniem skutków ustawiania barier na różnych podłożach. Rozważono ruch samochodów kategorii M1 (segment handlowy B i C), czyli najczęściej występujących na drogach. Podczas analizy wyników obliczeń brano pod uwagę kąt odejścia toru ruchu samochodu, mierzony bezpośrednio po zakończeniu fazy kontaktu pojazdu z barierą. Oddzielnej ocenie poddano odległość toru ruchu środka masy samochodu od krawędzi bariery w jej położeniu statycznym. Dokonano analitycznej aproksymacji wyników obliczeń i uzyskano zależności wielkości charakteryzujących przebieg toru ruchu samochodu od kąta i energii uderzenia w barierę.
A course of a car motion path after collision with a concrete road barrier has been analyzed. A car motion path at the postimpact stage makes a significant index of the protective function fulfilled by a barrier. A model of the impact process dynamics and deformation of a car hitting the barrier as well as the barrier motion have been used in this work. That model is presented in [7]. Calculations have been carried out that indicated the influence of the impact angle and impact energy on the car motion path after completion of the barrier contact stage. Calculations have been carried out considering the effects of placing the barrier on different types of the ground. Motion of the M1 category cars has been considered (commercial segment B and C), that is the most common cars on the roads. During the analysis of computation results, the car path deflection angle, measured just after the end of the car and barrier contact stage, has been considered. A separate evaluation of the distance between the motion path of the centre of the car mass and the edge of the barrier in its static position, has been performed. Analytical approximation of results has been performed and dependences of values characterizing the course of the car motion path on the impact angle and the impact energy have been obtained.
Źródło:: Eksploatacja i Niezawodność; 2011, 2; 72-80
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: The analysis of safety of rear seat occupants of a passenger car during the road accident
Analiza stanu bezpieczeństwa pasażerów na tylnych siedzeniach samochodu osobowego podczas wypadku drogowego
Autorzy:: Żuchowski, A.
Prochowski, L.
Powiązania:: https://bibliotekanauki.pl/articles/1365085.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: bezpieczeństwo pojazdu
bezpieczeństwo ruchu drogowego
pasażer na tylnym siedzeniu
testy zderzeniowe
transport
crash testes
rear seat occupant
road safety
vehicle safety
Opis:: The test results indicate that in many structural solutions of the passenger cars, dynamic loads of the rear seat passengers can be significantly higher compared to the front seat passengers, so the risk of injuries is higher for them. The work specifies examples of courses of dynamic loads that occur during the frontal collision with an obstacle and that affect the front seat and the rear seat passengers. At the same time, the attention is paid to relations between a seat occupied in a car and the probability of injuries in various road accidents. The analysis of dynamic loads that affect the rear seat passengers in many cars has been carried out. In order to do that, the laboratory test (crash test) results have been used. Dynamic loads affecting the passengers of various anthropometrical features have been considered. The results of those analyses have been referred to the loads affecting a driver and a front seat passenger, that is the persons who drive a car and are protected by typical passive safety systems on the front seats. The indexes of biomechanical human body resistance to impact load results have been used during the evaluation.
Wyniki badań pokazują, że w wielu rozwiązaniach konstrukcyjnych samochodów osobowych, obciążenia dynamiczne pasażerów na tylnych siedzeniach mogą być znacznie większe niż osób na przednich fotelach, a więc i ryzyko obrażeń jest dla nich wyższe. W pracy zestawiono przykładowe przebiegi obciążeń dynamicznych, powstających podczas czołowego uderzenia w przeszkodę i które działają na osoby jadące w pierwszym i drugim rzędzie foteli samochodowych. Jednocześnie zwrócono uwagę na relacje między miejscem zajmowanym w samochodzie a prawdopodobieństwem odniesienia obrażeń w różnych wypadkach drogowych. Przeprowadzono analizę obciążeń dynamicznych, jakie działają na osoby na tylnych siedzeniach w wielu samochodach. W tym celu wykorzystano wyniki badań laboratoryjnych (testów zderzeniowych) samochodów. Rozważono obciążenia dynamiczne działające na pasażerów o różnych cechach antropometrycznych. Wyniki tych analiz odniesiono do obciążeń działających na kierowcę i pasażera obok kierowcy, a więc do osób jadących, które są chronione przez typowe systemy bezpieczeństwa biernego na przednich fotelach. Podczas oceny wykorzystano wskaźnika biomechanicznej odporności ciała człowieka na skutki obciążeń udarowych.
Źródło:: Archiwum Motoryzacji; 2011, 3; 81-96
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "road crash" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język