Results 221 to 230 of about 10,152 (262)

Strain Relaxation in CVD Graphene: Wrinkling with Shear Lag

Nano Letters, 2015
We measure uniaxial strain fields in the vicinity of edges and wrinkles in graphene prepared by chemical vapor deposition (CVD), by combining microscopy techniques and local vibrational characterization. These strain fields have magnitudes of several tenths of a percent and extend across micrometer distances.
Bronsgeest, Merijntje S, Bendiab, Nedjma, Mathur, Shashank, Kimouche, Amina, Johnson, Harley T., Coraux, Johann, Pochet, Pascal   +6 more
openaire   +3 more sources

Least Work Solutions of Shear Lag Problems

Journal of the Aeronautical Sciences, 1941
Not ...
openaire   +2 more sources

Shear-lag model: corrections, refinements and applications

Tectonophysics, 1997
Abstract Since it was developed by Cox [Cox, H.L., 1952. The elasticity and strength of paper and other fibrous materials. Br. J. Appl. Phys. 3, 72–79.], the shear-lag model (SLM) or fiber-loading theory has been widely used by material scientists and structural geologists as a powerful analytical method for analyzing mechanical interactions between ...
Pinglao Zhao, Shaocheng Ji
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Negative Shear Lag in Flanges of Plated Structures

Journal of Structural Engineering, 1991
Negative shear lag is not a particularly exceptional phenomenon but an effect that can occur at a wide variety of arrangements of plated structures with a considerable degree of significance. A description of features of the negative-shear-lag phenomenon is the main objective of this paper.
Vladimír Křístek, Jiři Studnička
openaire   +1 more source

Shear lag in composite steel concrete beams

2018 1st International Scientific Conference of Engineering Sciences - 3rd Scientific Conference of Engineering Science (ISCES), 2018
In order to estimate the flexural rigidity of a composite steel concrete beam, it is necessary to study the shear lag phenomenon, which plays an important role in the distribution of the normal bending stresses at the concrete slab of the composite beam. In this paper, a nonlinear three-dimensional finite element analysis is employed to study shear lag
Mohannad H. Al-Sherrawi, Salam Naseer Mohammed   +1 more
openaire   +1 more source

Shear Lag And Beam Theories For Structures

2004
Dynamic problems are solved using beam theory and shear lag approximations, and also FEM. For a laminated plate incorporating through-thickness fibers, highlights are: 1) Inertia complicates the fiber pullout problem considerably. 2) Disturbances propagate along frictionally coupled fibers at less than the bar wave speed.
BN Cox, MG Andrews, MASSABO', ROBERTA, AJ Rosakis, N. Sridhar, QD Yang   +5 more
openaire   +2 more sources

Second order shear lag theory

Composites Science and Technology, 2012
Abstract The standard shear lag theory for elastic aligned short-fibre composites is extended to allow for a gradient of overall strain. The result is a one-dimensional strain gradient theory of the Toupin–Mindlin type. All parameters are the same as in the standard theory, and in the limits of weak strain gradients, large fibre aspect ratios or low ...
openaire   +1 more source

Analysis of Shear Lag Anomaly in Box Girders

Journal of Structural Engineering, 2002
In box girders with wide flanges, an uneven flange stress distribution (the flexural normal stress is greater at the edges than that at the center of the flange), so-called shear lag (or positive shear lag), may occur following the characteristics of stress concentration problems.
Sung C. Lee, Chai H. Yoo, Dong Y. Yoon
openaire   +1 more source

Evolution of Shear Lag and Block Shear Provisions in the AISC Specification

Engineering Journal, 2006
The American Institute of Steel Construction (AISC) has published two standards for design of steel structures for the past 19 years, an allowable stress specification, ASD, and a limit states specification, LRFD. The AISC Committee on Specifications has developed a new standard that includes provisions for design according to both ASD and LRFD.
openaire   +1 more source

Shear Lag in Bolted Angle Tension Members

Journal of Structural Engineering, 1997
Steel angles acting in tension can be used singly or in pairs. In either case, it is not usually possible to connect both legs. This means that the effectiveness of the member must reflect the shear lag that is present in such an arrangement. This study reports on the experimental testing of 24 single and double angle tension members that use bolted ...
Geoffrey L. Kulak, Eric Yue Wu
openaire   +1 more source