Results 221 to 230 of about 3,860 (279)

Experimental Research and Computational Analysis of Eco- and Biomaterials. [PDF]

Materials (Basel)
Garbowski T.
europepmc   +1 more source

Optimum buckling design of composite stiffened panels using ant colony algorithm [PDF]

Composite Structures, 2010
Optimal design of laminated composite stiffened panels of symmetric and balanced layup with different number of T-shape stiffeners is investigated and presented. The stiffened panels are simply supported and subjected to uniform biaxial compressive load.
Shijun Guo
exaly   +2 more sources

Evaluation of ultimate strength of stiffened panels under longitudinal thrust

Marine Structures, 2014
A series of collapse analyses is performed applying nonlinear FEM on stiffened panels subjected to longitudinal thrust. MSC.Marc is used. Numbers, types and sizes of stiffeners are varied and so slenderness ratio as well as aspect ratio of local panels ...
Satoyuki Tanaka, Daisuke Yanagihara, Minoru Harada   +2 more
exaly   +2 more sources

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Analysis and testing of a postbuckled stiffened panel

AIAA Journal, 2002
The suitability of using the efficient, linear elastic design software VICONOPT for the analysis of a stiffened panel with a postbuckling reserve of strength is investigated. A longitudinally compressed panel, which initially buckled in a local skin mode, was analyzed with allowance being made for the effects of an initial overall imperfection.
M. Lillico, R. Butler, G. W. Hunt, A. Watson, D. Kennedy, F. W. Williams   +5 more
openaire   +1 more source

Evaluation of Bead-Stiffened Metal Panels

Journal of Spacecraft and Rockets, 1975
Potential weight efficiency for bead-stiffened panels has been demonstrated through fabrication and testing. Theoretically optimum design concepts were identified, and small specimens were tested under combined compression, shear, and bending to determine local buckling failure loads and to verify theory.
J. SHIDELER, H. BOHON, B. GREENE
openaire   +1 more source

Stiffener Effectiveness Approach for Optimal Stiffener Placement on Curvilinear Stiffened Panel

50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2009
Stiffened panels with curved stiffeners have shown a potential for structural tailoring of metallic panels. However, the optimal placement of the stiffener curves has remained a challenge, both due to the presence of multiple local minima in the design space, as well as the associated CPU cost to solve the problem. This paper presents a new approach to
Manav Bhatia, Rakesh Kapania
openaire   +1 more source

Effect of Stiffener Geometry on the Response of Grid-Stiffened Panels

Journal of Engineering Mechanics, 2018
AbstractIt is well established that the lateral bending stiffness of thin panels is considerably enhanced by judicious use of ribs or stiffeners.
P. S. Harvey, L. N. Virgin
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Optimum Design of Curvilinear Stiffened Panels with Stiffening Beams

Applied Mechanics and Materials, 2013
The paper presents a framework for design and optimization of curvilinear stiffened panels with any cross-section shape of stiffener. Within this framework, the weight of stiffened panel applied complex loads, is minimized under the constraints of structural responses include global buckling, maximum stress and crippling.
Jun Bo Yang, Bi Feng Song, Xiao Ping Zhong   +2 more
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Stiffened panels with varying stiffener sizes

The Aeronautical Journal, 1973
Stiffened panels usually consist of a skin of uniform thickness with several identical equally spaced longitudinal stiffeners. This paper demonstrates that the weight of a panel which is designed to have a specified initial buckling load, in uniform longitudinal compression, can be reduced by using more than one size of stiffener.Initial buckling ...
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Response of stiffened sandwich panels

22nd Structures, Structural Dynamics and Materials Conference, 1981
An increasingly important part of the design of skin-stringer systems, such as those found in flight vehicles, is the ability to reduce surface vibration levels when they are subjected to the dynamic loads of jet, or propeller noise. One common method of reducing the response of these structures is by layered construction using viscoelastic materials ...
M. SLAZAK, R. VAICAITIS
openaire   +1 more source