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Wyszukujesz frazę "impact model" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The model of vertical acceleration impact on backbone of member of the crew
Autorzy:
Michalczyk, M.
Szcześniak, K.
Powiązania:
https://bibliotekanauki.pl/articles/244530.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
blast tests
vertical acceleration impact model
anthropomorphic test dummy
Opis:
This paper presents procedure methodology allowing to evaluate the impact of vertical acceleration (mine detonation under the vehicle) for damages of backbone of the crew member This problem is presented globally with stress on model being the estimator of the backbone damages. Then this study includes standard requirements in this field and discusses the necessary instrumentation and then method for development of model input data is indicated. the vertical impact model is presented on example. The mechanisms allowing to evaluate the level of potential injuries are presented in the final part in this paper. The range of problems concerning metrology of physical values associating explosion and evaluation of its impact on the human body is very wide. Problems discussed in this paper do not exhaust this field. The research are under way on several topics for their more full recognition. Development of this field will be correctly used, having in mind the aspect and usefulness of such research. The main criterion for evaluation of explosion impact on people protected by armour of the vehicle is the measurement of physical and mechanical values occurring during explosion. The high accelerations and pressures constitute serious danger for health and life of people. Tests are necessary to determine effectiveness of the crew's protection both in vehicles and in other objects.
Źródło:
Journal of KONES; 2011, 18, 1; 351-358
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of deformation in a spring-mass realisation of human chest occurred after action of impact
Autorzy:
Olejnik, P.
Awrejcewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/245999.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
elastic impact
multi-dimensional dynamical system
rheological model
human chest
LQR algorithm
numerical simulation
Opis:
This paper takes into consideration active control of a mechanical construction modelling a human chest subject to impulsive elastic loading coming from a fast moving light mass. The effect of impact causes some essential deformation in the form of distance decreasing between the front and back side of the chest resulting from compression of internal organs. One can attenuate such a destructive proces s by introduction of fast-response active control elements attached to the front or back side of the chest i.e., from the direction of impacting mass or between back and support of the body. The problem of one- or two-dimensional control is not easy to perform because of the consideration of the very short time of system's reaction. At this stage there has been used an effective numerical procedure for both solution and LQR control method application in a dynamical system of three separated elastically (rheologically as well) linked masses. Direction-dependent coefficients of the rheological link (extending our system to the seventh state-space dimension) govern different properties of internal organs during their stretching and compression. It puts into the control scheme's matrices time-dependent coefficients of damping influencing the optimal linear quadratic regulator used in control.
Źródło:
Journal of KONES; 2010, 17, 1; 327-335
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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