Application of austenitic steels in energy absorbing structures

• Autorzy: Moćko W.
• Języki publikacji: EN

Abstrakty

EN

Occupants protection during vehicle crash is one of the major problems considered at vehicle designing stage. The increasing safety as well as comfort requirements results in the total vehicle weight increase. On the other hand, higher mass influence on the fuel economy of vehicle. Thus, it is very important to maintain or even reduce vehicle weight. One of the solutions of this problem is application of a new materials having good strength-to-weight ratio i.e. high strength steels (HSS). They are often used in protective and energy absorbing structures in automotive industry. One of HSS so-called austenitic steels are characterized by excellent mechanical properties such as: high strength, strong strain, and strain rate hardening. Those mechanical effects are consequence of microstructural evolution during strong deformations i.e. twinning and phase transformation. As a consequence those steels are very good material for the purposes of energy absorbing and protective structures. This article presents the results of mechanical properties tests of VP159 austenitic steel. On the basis of experimental data, the JC constitutive model has been calibrated. The obtained results were used for the computer simulations of energy absorbing of square profiles made of analysed material. The results were compared with other types of steel.

Słowa kluczowe

EN

aluminium alloys; CO2 emission; electric vehicle; vehicle structure

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 3
• Strony: 305--310
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Moćko W.

• Motor Transport Institute Centre for Material Testing Jagiellońska 80, 03-301 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Aluminium in Cars, European Aluminium Association, 2007.
• [2] Yan, B., Urban, D., Characterization of fatigue and crash performance of new generation high strength steels for automotive applications, AIAI/DOE Technology Roadmap Program Report, Pittsburgh 2003.
• [3] Moćko, W., Kowalewski, Z. L., Wojciechowski, D., Rudnik, D., Badania właściwości mechanicznych stopu LH556 i stali VP159 pod kątem zastosowania w osłonach balistycznych, Biuletyn WAT, 2/2012, 2012, Accepted for publication, 2012.
• [4] Johnson, G. R., Cook, W. H, A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures, Proceedings of Seventh International Symposium on Ballistics, The Hague, pp. 541–547, The Netherlands 1983.
• [5] Moćko, W., Kowalewski, Z. L., Dynamic Compression Tests – Current Achievements and Future Development, Engineering Transactions, 59,pp. 235-248, 2011
• [6] Moćko, W., Kowalewski, Z. L., Zastosowanie wybranych równań konstytutywnych do opisu właściwości mechanicznych stali wysokoazotowej typu VP159, Modelowanie Inżynierskie, Accepted for publication.