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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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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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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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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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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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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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Pedestrians Protection and Car Passengers Safety
Švancara, Jan ; Svída, David (referee) ; Ramík, Pavel (advisor)
This bachelor thesis deals with the protection of pedestrian and passenger safety in vehicles. It describes the different elements of protection and deals with tests to verify the level of protection. It gives examples of the future direction of development of technologies to improve the protection of pedestrians and passengers in vehicles.
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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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Side Impact Dummies under Euro NCAP Directives
Lenděl, Michal ; Maršálek, Ondřej (referee) ; Raffai, Peter (advisor)
This bachelor thesis is dedicated to the problematic of side impact dummies under Euro NCAP directives. Basic rules and principles of each kind of tests are explained. The main part of my thesis describes the construction of the ES-2 dummy, which is being used in pole side impact and car to car side impact. Next chapters give information about child dummies as well as about real usage of mentioned dummies in the Skoda Auto.
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Computational Simulations in Automotive Safety
Krkoška, Kamil ; Svída, David (referee) ; Ramík, Pavel (advisor)
The goal of this bachelor thesis is to build up a compact overview of recent development in automotive safety, concrete methods and results reached in this branch. Here are briefly described solutions for improvement of active and passive safety and next is explained testing of these systems in crash tests and assessment of these tests by using biomechanical limits. Attention is also given to the usage and benefit of computational simulations. Next are described procedures of simulations and also software used for these simulations. Then there are mentioned examples of successful applications of computational simulations.
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