Dynamic Response of Viscoplastic Thin-Walled Griders in Torsion

• Autorzy: Czechowski L.
• Języki publikacji: EN

Abstrakty

EN

This work deals with an analysis of isotropic or orthotropic girders subjected to transient dynamic loads. The duration of dynamic loading was assumed to be equal to a period of the natural fundamental flexural vibrations of a structure under analysis. Numerical calculations were performed with the finite element method using ANSYS ® 11.0 software. The results of computations were presented as maximum angle of the rotation of the girder in a function of the dynamic load factor, DLF (the ratio of pulse loading amplitude to static critical load). In study it has been taken into account apart from the elastic–plastic range of material with isotropic hardening as well as the strain rate effect described by Perzyna model.

Słowa kluczowe

EN

finite elements method; carbon-epoxy laminate; post-critical deformation states; thin walled beams

PL

metoda elementów skończonych; laminat epoksydowo-węglowy; krytyczne stany po deformacji; belka cienkościenna

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2013
• Tom: Vol. 17, nr 1
• Strony: 7--16
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Czechowski L.

• Department of Strength of Materials Łódź University of Technology Stefanowskiego 1/15, 90-924 Łódź Poland

Bibliografia

• [1] Ari–Gur, J. and Simonetta, SR.: Dynamic pulse buckling of rectangular composite plates, Composites, Part B, 28B, pp. 301–308, 1997.
• [2] Biskupski, J. and Kołakowski, Z.: Stability of thin–walled box girders subjected to bounded torsion, Engineering Machines Problems, 3 (3), pp. 57–72, 1994.
• [3] Czechowski, L., The dynamic stability in the elasto–plastic range of composite rectangular plate subjected to the combined load /in Polish/, PhD Thesis, Łódź, 2007.
• [4] Czechowski, L.: Dynamic response of girders subjected to pulse loading in torsion, section 10, pp. 228–242.
• [5] Czechowski, L.: Dynamic stability of rectangular orthotropic plates subjected to combined in–plane pulse loading in the elasto–plastic range, Mechanics and Mechanical Engineering, Vol.12, 4, pp. 309–321, 2008.
• [6] Jones, N.: Several phenomena in structural impact and structural crashworthiness, European Journal of Mechanics A/Solids, 22, 693–707, 2003.
• [7] Jones, N.: Structural impact, Cambridge University Press, 2003.
• [8] Królak, M., Kubiak, T. and Kołakowski Z.: Stability and Load Carrying Capacity of Thin–Walled Orthotropic Poles of Regular Polygonal Cross–Section Subject to Combined Load, Journal of Theoretical and Applied Mechanics, 4 (39), pp. 969–988, 2001.
• [9] Kubiak, T.: Criteria for dynamic buckling estimation of thin–walled structures, Thin-Walled Structures, 45 (10–11), pp. 888–892, 2007.
• [10] Mania, R. and Kowal–Michalska, K.: Behavior of composite columns of closed cross–section under in–plane compressive pulse loading, Thin-Walled Structures, 45, pp. 902–905, 2007.
• [11] Mania, R. J.: Dynamic buckling of thin–walled columns made of viscoplastic materials, Scientific Bulletin of Technical Uni. of Lodz, No. 1059, 2010.
• [12] Mania, R. J.: Strain–rate effect in dynamic buckling of thin–walled isotropic columns, Mechanics and Mechanical Engineering, 12 (3), 189–200, 2008.
• [13] Ma, H. W., Zhang, S. Y. and Yang, G. T.: Impact torsional buckling of plastic circular cylindrical shells experimental study, International Journal of Impact Engineering, 22 (5), pp. 49–64, 1999.
• [14] Petry, D. and Fahlbusch, G.: Dynamic buckling of thin isotropic plates subjected to in–plane impact, Thin-Walled Structures, 38, pp. 267–283, 2000.
• [15] Perzyna, P.: Theory of viscoplasticity, Warszawa, PWN, (in Polish), 1966.
• [16] Perzyna, P.,et al.: Viscoplasticity application, Wroclaw, Ossolineum, (in Polish), 1971. 16 Czechowski, L.
• [17] Stoffel, M.: Phenomenological and micromechanical viscoplastic laws applied to high strain rate deformations of plates, Thin-Walled Structures, 47, 39–43, 2009.
• [18] Wang, D. Y. and Chen, T. Y.: Impact buckling and post–buckling of elasto– viscoplastic cylindrical shell under torsion, China Ocean Engineering, 11 (1), pp. 43– 52, 1997.
• [19] Xinsheng, Xu, Jianqing, Ma, Lim, C. W. and Zhang, G.: Dynamic torsional buckling of cylindrical shell, Computer and Structures, 88, pp. 322–330, 2010.
• [20] Zhang, X. Q. and Han, Q.: Buckling and post–buckling behaviors of imperfect cylindrical shells under torsion, Thin-Walled Structures, 45 (12), pp. 1035–1043, 2007.