Modeling of physical and geometric non-linearities of the steel arch supports on the FEM basis

• Autorzy: Podesva J. , Janas P.
• Konferencja: Modelling and optimization of physical systems/International Seminar of Applied Mechanics (9 ; 27.05-29.05.2005 ; Wisła, Polska)
• Języki publikacji: EN

Abstrakty

EN

The steel arch support of the horizontal mine openings represents the steel structure, made up on the beam elements. There exists a number of computer programs for the force and stress analysis of such structures. The geometric non-linearity (large displacement) can be included into the program code. But after the large change of the beam cross sectional area, and under plastic deformation, the beam partially looses its stiffness. This feature is hard to include into the beam-based model. The paper introduces the kind of "trick" how to take into account the influence of the beam-shape change and non-linear plastic material model.

Słowa kluczowe

EN

steel arch; modeling

PL

łuk stalowy; modelowanie

• Wydawca: Wydawnictwo Katedry Mechaniki Stosowanej
• Czasopismo: Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska
• Rocznik: 2005
• Tom: z. 28
• Strony: 125--128
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Podesva J.

• Department of Mechanics, Faculty of Mechanical Engineering, VSB - Technical University of Ostrava

autor

Janas P.

• Department of Mechanics, Faculty of Mechanical Engineering, VSB - Technical University of Ostrava

Bibliografia

• [1] Aldorf J.: Mechanika podzemnich konstrukci, VSB-TU Ostrava, Fakulta stavebni, 1999.
• [2] Horyl P.a kol.: Nelineární analýza statické a dynamické unosnosti ocelovych vyztnži podzemnich del, Zaverecna zprava grantoveho ukolu c. GA CR 101/95/1177, V§B TU Ostrava 1997.
• [3] Janas P.: Dimensioning of roadway supports in conditions of Ostrava-Karvina coal field. Strata Control in Deep Mines, 11 th plenary scintific session of the International Bureau of Strata Mechanics/World Mining Congress, Novosimbirsk, 5.-9. June 1989, A.A. Balkema/Rotterdam/Brookfield 1990.
• [4] Janas P. Kološ I.: Stiffness of beam in elasto-plastic state , ACE2002 Advances in Civil Engineering, 5th International Congress. 2002;1:645 - 653.
• [5] Janas P. Krejsa M. Kološ I.: Reliability assessment of structure expressed to impact, sbornik prispevku narodni konference s mezinarodni ucasti Engineering mechanics. 2003:180/1-9.