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Pedestrian Protection Systems in Car Collisions
Rupčík, Jan ; Maršálek, Ondřej (referee) ; Raffai, Peter (advisor)
This bachelor thesis deals with the protection of pedestriáns in a collision with a vehicle. The first section describes the history of vehicle safety. The next section is focused on the evaluation safety of vehicles. The following sections are devoted to passive safety of vehicles and aktive systems prevent the vehicle strikes a pedestrian. The last section describes the objectively examina the effectiveness of systems.
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Design of a "Cyclist/Pedestrian Dummy" platform for testing advanced assistance systems
Bartuněk, Jiří ; Ramík, Pavel (referee) ; Štětina, Josef (advisor)
The aim of this master's thesis is to design a remote-controlled platform for testing advanced assistance systems in modern cars. The work focuses on the detailed construction of a robust undercarriage powered by electric motors. This undercarriage must be capable of carrying various dummies, such as a pedestrian, child, or cyclist, and withstand being overrun by a vehicle, which is verified using the finite element method. The thesis also includes the development of a specialized attachment system for dummies that minimizes potential damage to the tested vehicle. The result is a complete design of the platform, including a detailed description of the selection and integration of electronic components, providing a comprehensive basis for the manufacture of a testing prototype. The thesis is supplemented with drawing documentation.
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Car Impact Simulation on Pedestrian Leg
Jaška, Lukáš ; Svída, David (referee) ; Ramík, Pavel (advisor)
This thesis seeks to simulate the impact on the human foot on the car bumper. The opening section deals with requirements as to the current passive safety features aiming to mitigate the consequences of such impact. The thesis also describes the construction of a human foot impactor, its certification via both static and dynamic tests, a simulation of the cash test and its evaluation. The designed model as well as the simulation procedure have been led according to the current Euro NCAP specifications.
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Active and passive safety in Euro NCAP
Váňa, Tomáš ; Jindra, Petr (advisor) ; Hart, Jan (referee)
The aim of this work is to prepare current overview of all active and passive safety features in the car and compare their impact on safety. There will be described assessment of crash tests at three car brands in the same category. The whole work will be concluded and estimate how the developments in the security slide
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Comparison of Selected Real Traffic Accidents to Crash Tests
Rybková, Tereza ; Sojka, Jiří (referee) ; Semela, Marek (advisor)
This master’s thesis presents an overview of the basic forces acting on the vehicle, the basic methods of analysis of accident, collection of data used in the analysis of accidents, an overview of the basic performance criteria and thresholds used in the homologation test of occupant protection in a frontal impact, used crash tests, homologation tests and specifications for these tests. Attention is paid to Euro NCAP crash tests and to homologation tests of vehicles Skoda Octavia with aim to try to compare them with selected accidents in terms of depth and character deformation and evaluate findings comparision.
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Car Door Handle FEM Model Creation and Validation for Crash Simulations
Raffai, Peter ; Korouš, Jan (referee) ; Ramík, Pavel (advisor)
The aim of this master’s thesis was to create a component model of a door handle stiffener used by the Volkswagen concern, which can be used for crash computations. Also to tune its parameters the way, its behavior corresponds the most to the real part’s. In the theoretical part the current regulations of the Euro NCAP are presented, concerning the testing and evaluation of the passive safety of new vehicles. Attention is focused on the evaluation of the side impact barrier tests, where the effect of the door handle stiffener’s damage is reflected the most. Shown are the reasons for the effort to simulate the real behavior of the stiffener, the factors, which initialized the born of the studied problem. The practical part starts with the creation of the FEM mesh of the part based on its 3D CAD model, also describes the requirements for the mesh quality, as well as the used tools and methods. Further on investigated are the characters of real damages of the door handle area during side impacts, based on which the component tests are proposed for the validation of the simulation model. Experimental research consists of the stiffener’s testing for simple bend and twist loads, three specimens each. After the execution of the tests the results get compared with the corresponding simulations. Modifications are made on the model according to the acquired results: refinement of the FEM mesh, new material model usage with failure for shell elements and definition of real material characteristics for the used thermoplastics. The latest obtained simulation dependencies are compared with the measured values again, the results are evaluated at last.
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Vehicle Body Side Structure Simplified Parametric Model
Smilek, Tomáš ; Ribka, Tomáš (referee) ; Ramík, Pavel (advisor)
Simplified parametric model of vehicle side structure MT, Institute of Automotive Engineering, 2010, p. 117, fig. 130, appendices 0 This study´s motivation is based on Euro NCAP tests, especially side impact test, which consist of barrier impacting into vehicle side. Goal is to make simplified parametric model of vehicle side structure. The behavior of loads on dummy must be as identical as possible with big FEM model.
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Safety of Škoda cars
Poláš, Maroš ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis focuses on the history and the safety of Škoda cars. The first part deals with the history of safety as well as the history of Škoda cars. The second part is divided into decades and there are described various car models in terms of their active and passive safety, as development of various security features, as well as the vehicles themselves from 1964 to 2015.
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Vehicle Safety Assist Systems and Their Assessment under Euro NCAP Directives
Szabó, Ákos ; Zubík, Martin (referee) ; Raffai, Peter (advisor)
The aim of this bachelor’s thesis was to create overview about vehicle safety assist systems and to show their impact of road traffic safety. In the first part of this thesis systems were categorized by their function and characteristic.After that there were created a survey about accident rate and there were shown the most common causes in road accidents. In the second part was discussed principle how brake assist systems and automatic emergency braking work. In the last section was explained assessment under Euro NCAP directives, where the attention was focused onassesment of the experimentsof safety assist.
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Device for towing vehicles in crash tests
Šmalec, Petr ; Pavlík, Jan (referee) ; Bilík, Martin (advisor)
Bachelor thesis is focused on device for towing vehicles in crash tests. Deals, what the crash test is and clarify some independent organisation for occupant safety. Next is solved the problem of propulsion system for devices and tell us the propulsion systems used in the vehicle research centers. At the end of thesis concept of device for towing two vehicles against each other is designed.
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