Results 231 to 240 of about 5,180 (268)

Initial Imperfection Models for Segments of Line Pipe

Journal of Offshore Mechanics and Arctic Engineering, 2005
Initial imperfections have long been acknowledged as having an effect on the behavior of shell structures, affecting both the global and local behavior. Yet, despite their significance, initial imperfections are rarely included in analytical models for pipelines. This is usually because of the complicated nature of initial imperfections, the difficulty
Alfred B. Dorey, David W. Murray, J. J. Roger Cheng   +2 more
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Buckling of Initially Imperfect Cylindrical Shells Subject to Torsion

Journal of Applied Mechanics, 1957
Abstract An analytical solution based upon large-deflection shell theory is presented for the problem of the elastic instability of a thin cylindrical shell subject to torsion. The fundamental equations used are those presented by Donnell in 1934, and these equations together with the condition of stationary potential energy are employed
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On the stability of an initially imperfect, nonlinearly viscoelastic column

International Journal of Solids and Structures, 1968
Abstract The stability of an initially imperfect, simply-supported, H-section beam-column, subjected to an axial compressive load, is investigated. The material of the column is taken to behave as a general nonlinear viscoelastic solid with a constitutive relation represented by a Volterra-Frechet functional polynomial.
Distefano, J. N., Sackman, J. L.
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Effect of Initial Imperfections on the Strength of Restrained Plates

Journal of Offshore Mechanics and Arctic Engineering, 2011
Most common studies on the strength of plates under compressive longitudinal loading are related to plates having unrestrained edges which lead to a zero net load in the transverse direction. In ships, the framing system and the continuity of the plating in the transverse direction tend to induce rather different boundary conditions on the “unloaded ...
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Breakdown initiated by charges on imperfect dielectric films

Annual Report 1963 Conference on Electrical Insulation, 1963
A previous paper1 has described sparkover at low voltage gradients following a series of pulsed discharges. This type of breakdown was produced in three different situations.
Gaylord Penney, Benjamin Patz
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Imperfect capital markets and persistence of initial wealth inequalities [PDF]

, 1992
We consider an infinite-horizon inter-generational economy with identical agents differing only in their inherited wealth and with a constant-returns-to-scale technology using capital and labour (called "effort") and displaying a purely idiosyncratic risk. If effort is contractible, full insurance contracts make the production deterministic and initial
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Stochastic Simulation of an Initial Imperfection Data Bank for Isotropic Shells With General Imperfections

1988
SUMMARY A method for simulating random initial imperfections of shells with known probabilistic properties, and with both axisymmetric and nonsymmetric components, is presented. It consists in Fourier series expansion of the imperfection in terms of the structural mode shapes, truncating the series, and simulating the Fourier coefficients as random ...
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The statistical analysis of initial imperfection measurements

1984
Aerospace ...
Vermeulen, P.G. (author), Elishakoff, I. (author), van Geer, J. (author)   +2 more
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Buckling of composite shells with a novel initial imperfection model subjected to hydrostatic pressure

Composite Structures, 2022
Xinhu Zhang, Zhun Li, Zhaoqi Yang
exaly  

Plastic and Creep Instability of Shells with Initial Imperfections

1999
The critical states of cylindrical shells with initial imperfections having plastic and creep deformations are investigated. These states are defined as the load values at which the shell deflections rise sharply. The method of successive loading for which the reaction of the shell to small loading steps is studied and the process of deformation is ...
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