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Y.-S. Lee*, J.-D. Han#, Y.-H. Han** and J. Suh**

*Department of Mechanical Design Engineering, Chung-Nam National University, Tae-Jon, Korea
#Daw-Woo Heavy Industries, Tae-Jon, Korea
**KIMM, Tae-Jon, Korea

Abstract

The stress arid vibration analysis of stiffened box structure is investigated by experiment and FEM analysis. The effects of stiffener number and box section shape on the structure response are presented.

The 1st natural frequency of stiffened folded box structure with 5 stiffeners is 300 Hz. It is higher than that of stiffened rectangular box structure with 5 stiffeners. which is 251 Hz. Maximum deflection of folded box structure with thickness of 1 mm is lower- than that of rectangular box structure with thickness of 1 or 2 mm.

The natural frequencies of box structures are increased with the number of stiffener, while the deflections are decreased with the number of box structures. For the fundamental frequency (251 Hz) of stiffened (with 5 stiffeners) and one (137.64 Hz) of unstiffened rectangular box structure under clamped-clamped boundary condition, the ratio of frequency increase is 82 percent. The stiffened structures of 2 mm plate thickness can be reduced to 120 percent of maximum deflection of 1 mm plate thickness rectangular box structures.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 43 ADVANCES IN COMPUTATIONAL TECHNIQUES FOR STRUCTURAL ENGINEERING Edited by: B.H.V. Topping Paper XI.2 A Vibration and Stress Analysis of Stiffened Box Structures Y.-S. Lee, J.-D. Han#, Y.-H. Han* and J. Suh** Department of Mechanical Design Engineering, Chung-Nam National University, Tae-Jon, Korea #Daw-Woo Heavy Industries, Tae-Jon, Korea *KIMM, Tae-Jon, Korea doi:10.4203/ccp.43.11.2 purchase the full-text of this paper Full Bibliographic Reference for this paper Y.-S. Lee, J.-D. Han, Y.-H. Han, J. Suh, "A Vibration and Stress Analysis of Stiffened Box Structures", in B.H.V. Topping, (Editor), "Advances in Computational Techniques for Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 225-232, 1996. doi:10.4203/ccp.43.11.2 Abstract The stress arid vibration analysis of stiffened box structure is investigated by experiment and FEM analysis. The effects of stiffener number and box section shape on the structure response are presented. The 1st natural frequency of stiffened folded box structure with 5 stiffeners is 300 Hz. It is higher than that of stiffened rectangular box structure with 5 stiffeners. which is 251 Hz. Maximum deflection of folded box structure with thickness of 1 mm is lower- than that of rectangular box structure with thickness of 1 or 2 mm. The natural frequencies of box structures are increased with the number of stiffener, while the deflections are decreased with the number of box structures. For the fundamental frequency (251 Hz) of stiffened (with 5 stiffeners) and one (137.64 Hz) of unstiffened rectangular box structure under clamped-clamped boundary condition, the ratio of frequency increase is 82 percent. The stiffened structures of 2 mm plate thickness can be reduced to 120 percent of maximum deflection of 1 mm plate thickness rectangular box structures. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £68 +P&P)
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