Optimization of anti-symmetrical open cross-sections of cold-formed thin-walled

• Autorzy: Lewiński J. , Magnucki K.

Warianty tytułu

PL

Optymalizacja otwartych antysymetrycznych przekrojów belek cienkościennych walcowanych na zimno

• Języki publikacji: EN

Abstrakty

EN

The paper deals with cold-formed thin-walled beams with the Z-, S- and Clothoid-section. A short survey of optimal designs of thin-walled beams with open cross-sections is given. Geometric properties of three cross- sections are described. Strength, local and global buckling conditions for thin-walled beams are presented. The optimal design criterion with a dimensionless objective function as a quality measure is defined. Results of numerical calculations for optimal shapes of three cross-sections are presented in tables and figures.

PL

W artykule rozważane są belki o przekrojach poprzecznych w kształcie Z-, S- oraz w kształcie klotoidy. Zamieszczono krótki przegląd zagadnień optymalnego projektowania belek cienkościennych o przekrojach otwartych. Opisano właściwości geometryczne trzech rozważanych przekrojów. Zapisano warunki wytrzymałości oraz lokalnej i ogólnej stateczności belek cienkościennych. Sformułowano kryterium optymalizacyjne z wykorzystaniem bezwymiarowej funkcji celu będącej miarą jakości przekroju. Wyniki numerycznych obliczeń optymalnych zarysów przekrojów poprzecznych przedstawiono w tablicach i na rysunkach.

Słowa kluczowe

EN

thin-walled beam; open cross section; global and local buckling; optimal design

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2009
• Tom: Vol. 47 nr 3
• Strony: 553--571
• Opis fizyczny: Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Lewiński J.

autor

Magnucki K.

• Poznan University of Technology, Institute of Applied Mechanics, Poznań, Poland,

Bibliografia

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