Results 311 to 320 of about 24,395 (343)

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
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Stiffened plates with arbitrarily oblique stiffeners

International Journal of Solids and Structures, 1990
Abstract An analysis for a stiffened plate with arbitrarily oblique and equally spaced eccentric stiffeners is proposed. In this analysis, the joint effects of stiffeners by the interaction of the plate and stiffeners are taken into account and the effects of stiffeners are not considered as discrete members, but their effects are averaged or ...
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Free Vibration of Stiffened Plate with Cracked Stiffeners

Advances in Applied Mathematics and Mechanics
Summary: In this paper, a new cracked stiffener model for the stiffener with a part-through and open crack is proposed, considering the compatibility condition of displacements between the plate and the stiffener. Based on the first-order shear deformation theory, the free vibration of stiffened isotropic plates with cracked stiffeners are investigated
Xue, Jian, Chen, Lihua, Sun, Yue, Zhang, Wei   +3 more
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Competition Stiffens

2019
This chapter discusses dual credit (DC) in its complexity, with a particular focus on how it has unfolded in Texas. It also looks at several other alternatives to Advanced Placement (AP): the International Baccalaureate (IB) program and the College Level Examination Program (CLEP).
Chester E. Finn, Andrew E. Scanlan
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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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Predicting Stiffener and Stiffened Panel Crippling Stresses

Journal of the Aeronautical Sciences, 1942
An empirical method is presented for predicting the crippling stress at L/p < 20 of 24S-T Alclad bent-up sheet stiffeners, 24S-RT Alclad bent-up sheet stiffeners, and 24S-T extruded stiffeners acting alone or in conjunction with 24S-T Alclad sheet as a panel.
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Buckling of stiffened plates and design of stiffeners

International Journal of Pressure Vessels and Piping, 1997
Abstract This paper presents a closed-form solution of critical instability stresses for simply supported rectangular plates with an arbitrary number of stiffeners in longitudinal and/or transverse directions. It is shown that there are only two buckling modes that are coupled to each other for single direction stiffened plates and four for double ...
Long-yuan Li, Peter Bettess
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Stability of stiffened cylinders.

AIAA Journal, 1965
Design of efficient cylindrical shells for carrying moderate compressive loads leads to the requirement that they be stiffened. The buckling behavior of such stiffened cylinders differs considerably from that of thin monocoque cylinders in several noteworthy respects: 1) Stiffened cylinders are often effectively "thick," and exhibit large buckle ...
John M. Hedgepeth, David B. Hall
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Demand on Stiffeners in Stiffened Extended End-Plate Connections

Advances in Structural Engineering, 2012
The paper reports a study on the effect of stiffeners on stiffness and strength of T-stubs to find out the strength and stiffness demand on stiffeners. The tensile capacity of triangular stiffeners is first analyzed and is compared with that of a long rectangular one, an efficiency factor formula is proposed.
W. Zhao, G.S. Tong
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Diabetes and Arterial Stiffening

2006
Type 2 diabetes (DM-2) has become a major global health problem that has been fueled mainly by increasing obesity and aging of the population. Most studies show that arterial stiffening occurs across all age groups in both type 1 diabetes and DM-2, and among those with impaired fasting glucose, impaired glucose tolerance, and the metabolic syndrome ...
Nathaniel, Winer, James R, Sowers
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