The macro element method in crashworthiness calculations-the state-of-the-art and the future

• Autorzy: Abramowicz W.

Warianty tytułu

PL

Metoda makro-elementów w projektowaniu struktur energochłonnych - stanwiedzy i perspektywy na przyszłość

• Konferencja: Bezpieczeństwo w Pojazdach Samochodowych / Sympozjum (20.11.2008 ; Warszawa, Polska)
• Języki publikacji: EN

Abstrakty

EN

Successful design of a crashworthy structure involves assessment of several simulation models at various levels of simplification and accuracy. Typically a design process starts from numerous analyses of semi-analytical and experimental models. The more mature is the structure concept the more detailed simulation models are needed. The macroelement models take over the main load of simulation work at the intermediate level of the design process when basic dimensions of the structure undergoes frequent modifications.This paper presents concise overview of the existing macro-element technology presented at the PUCA 2008 meeting in Tokyo. The discussed macro elements were developed for car,train and ship industries and are implemented in the framework of novel finite element formulation that is capable of handling both standard finite elements as well as a variety of macro and user defined elements. Number of examples is presented to illustrate potential of the new approach and indicate directions of further research.

PL

W artykule przedstawiono stan współczesnych metod obliczeniowo-projektowych opartych na metodzie makro-elementów. Metody te znalazły zastosowanie w projektowaniu struktur energochłonnych w pojazdach wszystkich typów (przemysł motoryzacyjny, kolejnictwo, przemysł morski). Omawiane metody obliczeniowe są szczególnie przydatne na wstępnych etapach projektowania ze względu na łatwość modelowania, bezpośrednie przełożenie wyników symulacji na wytyczne projektowe i znikomy czas CPU. W referacie przedstawiono skrótowo podstawy metody makro-elementów, charakterystykę nowych elementów rozwiniętych w ciągu ostatnich trzech lat jak również szereg przykładów zastosowań praktycznych.

Słowa kluczowe

EN

macro element method; crashworthy structure

PL

metoda makro-elementów; struktura energochłonna

• Wydawca: Instytut Pojazdów Politechniki Warszawskiej
• Czasopismo: Zeszyty Naukowe Instytutu Pojazdów / Politechnika Warszawska
• Rocznik: 2008
• Tom: z. 4/71
• Strony: 5--22
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Abramowicz W.

• Politechnika Warszawska Instytut Pojazdów

Bibliografia

• [1] Alexander, J. M. An approximate analysis of the collapse of thin cylindrical shells under axial loading, Q. J. Mech. Appl. Math., 13, 1, 10-15 (1960).
• [2] Abramowicz, W., The Effective crushing distance in axially compressed thin-walled metal columns., Int. J. Impact Engng., 1, 3, 309-317, (1983).
• [3] Abramowicz, W., Jones, N., Dynamic progressive buckling of circular and square tubes., Int. J. Impact Engng., 4, 4, 243-270, (1986).
• [4] Abramowicz, W., Jones, N., Transition from Uniform Bending to Progressive Buckling of Tubes Loaded Statically and Dynamically, Int. J. Impact Engng - Special issue in honour of Professor W. Johnson's 75th birthday, Int. J. Impact Engng., 19, 5-6, 415-437, 1997.
• [5] The Manual of Crashworthiness Engineering, ( Wierzbicki T. Editor.) Center of Transportation Studies, Massachusetts Institute of Technology, (1988-1991).
• [6] Abramowicz, W., Macro element method in crashworthiness of Vehicles in Crashworthiness – energy management and occupant protection (Ambrosio J. Editor), SpringerWienNewYork, 2001.
• [7] Kecman, D., Bending collapse of rectangular and square section tubes in relation to the bus roll over problem, PhD Thesis, Canfield Institute of Technology, UK, (1979).
• [8] Kecman, D., Program West for optimization of rectangular and square section tubes from the safety point of view, Fourth Int. Conf. on Vehicle structural mechanics, (SAE paper 811312), (1981).
• [9] Wierzbicki, T., Abramowicz, W., On the crushing mechanics of thin-walled structures., J. App. Mech., 50, 727-734, (1983)
• [10] Abramowicz, W., Wierzbicki, T., Axial crushing of multicorner sheet metal columns., J. App. Mech., 56, 1, 113-120, (1989).
• [11] Abramowicz, W., Extremal Paths in Progressive Plasticity, Int. J. Impact Engng, 18, 7-8, 753-764, (1996).
• [12] Visual Crash Studio (VCS) User's Manual, Impact Design, Europe, 2006.
• [13] Abramowicz, W., An alternative formulation of the FE method for arbitrary discrete/continuous models, Int. J. Impact Engng., 30, 8-9, 1081-1098, (2004).
• [14] Wierzbicki, T., Recke, L., Abramowicz, W., and Gholami, T., Stress Profiles in Thin-Walled Prismatic Columns Subjected to Crush Loading. Part I. Compression., Computers & Structures, 51, 6, 611-623, (1994).
• [15] Wierzbicki, T., Recke, L., Abramowicz, W., and Gholami, T., Stress Profiles in Thin-Walled Prismatic Columns Subjected to Crush Loading. Part II. Bending., Computers & Structures, 51, 6, 625-641, (1994).
• [16] Takada, K., and Abramowicz, W., Fast Crash Analysis of 3D Beam Structures Based on Object Oriented formulation, SAE 04B-119, (2003).
• [17] Takada, K., Abramowicz, W., K., Hosokawa, T., Tatsuda, Eiji., Tomozawa, K., Egawa, Y., Mae, Development of macro element model of large deformation automotive space frame, JSAE papers (2006) – in print (in Japanese).
• [18] Lasek, L., Bohm, D., Schindler, V., Vehicle layout tools for the early stage of the development process, Proceedings of the VPD Conference. 24-26 October 2005. Munich, Germany.