Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science

CONTRIBUTION TO REVIEW OF THE EFFECTS LEKHNITSKII INFLUENCE TO DYNAMIC PARAMETERS OF COMPOSITE STRUCTURES


ISSN: 1451-4117

E-ISSN: 1821-31977
Volume 9 article 194 pages: 276 - 280

Tomic Radoljub
Prva petoletka-S&R JSC, Trstenik

Petrovic Predrag
Istraživački institut 'Kiro Savić', Belgrade, Serbia

Jovanovic Tomislav
Istraživački institut 'Kiro Savić', Belgrade, Serbia

Dynamic analysis of anisotropic (in this paper generalized orthotropic) structure is often reduced to the analysis of quasi isotropic structures. In this way, it is possible to obtain results of acceptable accuracy. Improvement of results can be achieved primarily through the appropriate stiffness matrix, which includes specifics of composite (anisotropic) material concerning the interactions of normal stress and shear strain, apropos shear stress and dilatation (based on the effects of Leknitskii). Results of the analysis for the two above-mentioned models of a composite structure (generally orthotropic and quasi-orthotropic), are presented in graphical and tabular form.

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Robert M. J.:, "Mechanics of Composite Materials”: Scripta Book Company, Wash­ington, D.C. McGraw-Hill Internaional Book Company, 1975, pp. 355

Sekulovic M.: „Finite elements", Construction book (Gradjevinska knjiga), Belgrade, 1984

Tomic R.: „Optimisation of composite struc­ture for an engineering model with regard to fiber orientation", Conference "STRUCEENG - 89, Los Angeles, 1989., pp.113-118th.

Tomic R.: „Definition of parameters of the structural analysis of generalized orthotropic prismatic beam with aspect distortion func­tions", "Technique”, No. 7, XLIX, Belgrade, 1994., pp.36M-40M

Tomic R., Maneski T., Nestorovic M. „Optimi­zation of geometric and materia parameters of the orthotropic plate with elliptic openings with respect to stress concentration", Con­gress of Mechanics "24.YUMEH”, Belgrade, 2003. (Work on CD)

Bosnjak S.:"Neki problemi dinamike i cvrstoce masina visokih performansi, some of the prob­lems on dynamics and strength of the high performance machines", Istrazivanja i proje- tovanja za privredu, 1, 2010, Vol 8, broj 27.

Gaben Abu Mohamed, Slobodan Krcevinac, Mirko Vujosevic: „Modelujuci sistemi u opti- mizaciji”, Istrazivanja i projetovanja za privre­du, broj 18.

Maneski T., Ignjatovic D.:" Dijagnostika cvrstoce konstrukcija u funkciji odrzavanja”, Istrazivanja i projetovanja za privredu, broj 7.

Vasic Z., Petrovic Z.:" Savremeni kompoz- itni materijali u projektovanju i proizvodnji vazduhoplovnih konstrukcija", Istrazivanja i projetovanja za privredu, 2009-Vol.7, broj 4, broj 26.

Vasic Z., Petrovic Z.:" Razvoj baze projektnih podataka aviona", Istrazivanja i projetovanja za privredu 3, 2010, Vol8, broj 29.