Temat: Computer Simulation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Preliminary investigation of dynamic loads of the crew of the armoured personnel carrier during frontal crash
Autorzy:: Borkowski, W.
Hryciów, Z.
Powiązania:: https://bibliotekanauki.pl/articles/241797.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: armoured personnel carrier
impact
passive safety
computer simulation
Opis:: On the work one described chosen problems concerning of threats of the crew of the armoured personnel carrier with dynamic loads during crushing the obstacle. One paid attention on the lack of regulations regulative this problems. One described the general construction, and also worked out model of the armoured personnel carrier and crashed object. To the modelling one used the software LS-DYNA, using the method of finite elements. One gave also conditions for carrying out the numeric research. On the work one placed example results of numerical tests, deformations and stresses in the hull of the vehicle and in the crashed gate. One placed also example-courses of the speed and accelerations of chosen elements of the vehicle and people inside. On the basis on received results of simulation research one evidenced high level threats of the crews, liable to be effective with serious offences, particularly of the head and the spine. One qualified also directions and the range of further works targeting the improvement of the safety of the crew, in this taking into account the use of investigative dummy man. To further research one proposed models of dummy man Hybrid III, which for the necessity of taking in to consideration of additional elements of the equipment of soldiers (e.g. the helmet, the weapon, the bullet-proof vest) must be however properly modified. One pointed also on the necessity of working out the additional protective devices and also formulate the methodology of the experimental research.
Źródło:: Journal of KONES; 2008, 15, 4; 57-62
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Testing the results of a passenger vehicle collision with a rigid barrier
Autorzy:: Borkowski, W.
Hryciów, Z.
Rybak, P.
Wysocki, J.
Powiązania:: https://bibliotekanauki.pl/articles/245925.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road safety barrier
crash tests
computer simulation
LS-DYNA
Opis:: High accident index in Poland, including one of the highest death rates in EU, forces undertaking the intense works in order to improve traffic safety. Published road accident statistics indicate that the most dangerous accidents include a vehicle collision with a tree, post or other road object. The road safety barriers make the road infrastructure elements that can signiflcantly protect against that type of accidents. The work presents basie tasks and requirements imposed on the barriers. Problems related to a proper selection of the barriers have been also highlighted. The tools facilitating the barrier design include numerical modelling. The modelling has been done by means of the LS-DYNA software, using the finite element method. A general structure and a developed barrier model as well as vehicle model have been presented. The conditions of the numerical tests have been also specifled. The work presents the results of influence of car impact angle with a rigid safety barrier. Presented results refer to a car o f mas s of 900 kg, making a bas is for the tests of the limiting systems for several limiting levels: including normal limit N2 (according to EN 1317-2). Compared to standard requirements, the scope of numerical tests has been extended by other car impact angle values. The work presents vehicle trajectories and deformations of their bodies. It also includes examples of velocities and acceleration courses and acceleration severity indexes (ASI) calculated on their basis. Obtained results indicate that the barrier location angle has a high influence on the safety level ofthe car passengers as well as on the car motion trajectory after collision
Źródło:: Journal of KONES; 2010, 17, 1; 51-57
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Numerical simulation of the standard TB11 and TB32 tests for a concrete safety barrier
Autorzy:: Borkowski, W.
Hryciów, Z.
Rybak, P.
Wysocki, J.
Powiązania:: https://bibliotekanauki.pl/articles/247654.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road safety barrier
crash tests
computer simulation
LS-DYNA
Opis:: The work presents the traffic safety issue related to a use of the road protective barriers. It describes a purpose and tasks that should be fulfilled by the safety system. Conditions of crash tests and their evaluation according to the requirements of the existing standard documents are also presented. The purpose of the work was to evaluate the influence of applied barrier type on the car collision process. A barrier composed of the segments that can move on the ground due to the impact force and a barrier fixed to the road surface were assumed for the model tests. The modelling was carried out by means of the LS-DYNA sofrware, using the finite element method. The tests were performed for two types of cars, mass of 900 kg and 1500 kg. The work includes the numerical test results, deformations of car bodies and barrier displacement. Examples of velocities and acceleration courses of selected vehicle elements and the ASI index, calculated on their basis, used for evaluation of the passenger danger level were also presented. Obtained results indicate a significant influence of the barrier installation method (joint with the road) on the collision process course and dynamic loads affecting the car passengers. They also indicate directions of safety improvement.
Źródło:: Journal of KONES; 2010, 17, 4; 63-71
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Studies on the effectiveness of the innovative road safety system
Autorzy:: Borkowski, W.
Hryciów, Z.
Rybak, P.
Wysocki, J.
Wiśniewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/242956.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road safety barrier
crash tests
computer simulation
LS-DYNA
FEM
Opis:: The paper evaluates the effectiveness of the innovative road safety system equipped with prototype component segments composed of a body made of a plastic filled with reinforced concrete. Main advantages of the new safety barrier include increased resistance to corrosion as well as easy transport and assembly directly on a road section being secured. Model tests were performed on a car of 900 kg weight allowing for carrying out the TB11 tests according to the EN 1317-2 standard. LS-DYNA software was applied for modelling, using the finite element method. The work presents the numerical test results, trajectory of vehicle movement after collision as well as the concrete barrier displacement. It also includes examples of stress in steel bars and joint coupling. Detailed assessing of simulation test results were made on the basis of ASI, THIV and PHD index. They were calculated on the basis of velocity and acceleration courses of selected car bodywork points. Numerical test results confirm the fact that this system meets the normative requirements. They allow for qualifying that system for B impact severity level and W4 working width. The results presented in the paper make the initial stage of the study and further calculations will be oriented towards a possibility of meeting the requirements for higher restraint levels.
Źródło:: Journal of KONES; 2014, 21, 2; 27-32
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analysis of the influence of concrete safety barrier segment length on road safety
Analiza wpływu długości segmentu betonowej bariery ochronnej na bezpieczeństwo ruchu drogowego
Autorzy:: Borkowski, W.
Hryciów, Z.
Rybak, P.
Wysocki, J.
Wiśniewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/1364492.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: passive safety
crash tests
concrete safety barrier
computer simulation
LS-DYNA
bezpieczeństwo bierne
testy zderzeniowe
betonowe bariery ochronne
symulacja komputerowa
Opis:: The paper presents problems related to road safety in terms of the development of the concrete barriers system, dispersing energy of car collision on the roads with high traffic and high accident risk. Particular attention was paid to barriers' basic parameters - weight and length of the segment. The main objective of the numeric researches was to assess the qualitative and quantitative effects of the car collision with a concrete road barrier in accordance with the standard EN 1317. To the model tests a 900 kg passenger car has been used which allowed to perform TB11 test according to EN 1317-2 standard (initial velocity - 100 km/h). Numerical studies were carried out for concrete segments lengths: 2, 4, 6, 8 m for two selected impact points. Detailed comparisons of simulation test results obtained for individual variants were made on the basis of the acceleration courses of selected car bodywork points, calculated indicators, the trajectory of vehicle movement after collision as well as on the basis of the behaviour of the concrete barriers.
Niniejsza praca stanowi rozwinięcie problematyki bezpieczeństwo ruchu drogowego w aspekcie opracowania systemu betonowych barier ochronnych, rozpraszających energią zderzenia samochodu na drogach o dużym natężeniu ruchu i wysokim zagrożeniu wypadkowym, ze szczególnym uwzględnieniem jej podstawowych parametrów konstrukcyjnych (masy i długości segmentu). Głównym celem przeprowadzonych badań numerycznych było dokonanie oceny jakościowej i ilościowej skutków zderzenia samochodu z betonową barierą drogową zgodnie z obowiązującą normą EN 1317. Obliczenia przeprowa-dzono w systemie LS - DYNA wykorzystującego metodę elementów skończonych. Pojazd badany o masie 900 kg poruszał się z prędkością początkową 100 km/h, a następnie uderzał w system barier. Badania numeryczne zrealizowano dla segmentów betonowych o długościach: 2, 4, 6, 8 m, dla dwóch wybranych punktów zderzenia. Szczegółowych porównań wyników badań symulacyjnych, otrzymanych dla poszczególnych wariantów obliczeniowych, dokonano na podstawie przebiegów czasowych przyspieszeń wybranych punktów nadwozia samochodu, obliczonych na ich podstawie wskaźników, trajektorii ruchu pojazdu po zderzeniu, a także na podstawie zachowania się betonowej bariery ochronnej.
Źródło:: Archiwum Motoryzacji; 2014, 63, 1; 25-34
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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