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Showing 1 to 20 of 38 for “"shear lag"”.
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Shear lag in truss core sandwich beams
… to investigate the possible influence of shear lag in the discrepancy between the theoretical and measured stiffness of truss core sandwich beams. In previous studies, the measured values of stiffness in loading have proven to be 50% of the theoretical stiffness during three point bending …
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"Shear Lag" em estruturas tubulares de paredes delgadas
… are developed within an energy approach where shear strains and shear lag effects are considered. Explicit expressions for transverse deflections and stesses are given for cantilever box beams. For tubular sections of more general geometries, like bridge sections, semi-explicit expressions are …
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Investigation of the shear lag coefficient for welded tension members
Shear lag is a non-uniform distribution of stress resulting when all cross sectional elements are not directly connected. This phenomenon renders the cross section only partially effective in resisting tensile loads. In this investigation, both experimental and analytical studies were conducted to …
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Investigation of shear lag effect in high-rise buildings with diagrid system
… However, the framed tube building suffers from shear lag effects which cause a nonlinear distribution of axial stresses along the face of the building. A particular structural system called a diagrid system has caught the attention of the public. The diagrid system is not a new invention. The …
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Non-linear finite element analysis of steel plate tension members
… Construction (AISC) LRFD specification, the shear lag coefficient for plate members is dependent on only the ratio of the welding length to the plate width. To determine how this ratio influences the shear lag coefficient and whether there are other factors that should be considered, a finite …
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Investigation of Oxide Fiber/oxide Matrix Composites With a Weak Interphase
… pushout data with the linear model, the shear-lag model, and the Liang-Hutchinson model. These interface properties include interface fracture energy, coefficient of friction, clamping pressure, interface debond strength, and interface friction strength. A systematic study of the effect …
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Development of Design Criteria for Simply Supported Skew Slab-and-Girder Bridges (Distribution, Load, Truck, Live, Wheel)
… are modeled as eccentric stiffeners which cause shear lag in the slab. The effect of skew on the solution accuracy is demonstrated.
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Effects of shear deformations on the vibrational frequencies of wide-flanged structures
… beam equations (which include transverse shear deformation and rotary inertia effects) are extended for a wide-flanged structure to include the additional shear lag deformation of the flanges; thus, cross-sections of the beam are allowed to distort instead of remaining plane sections. The …
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Characterization of a Pressure Sensitive Adhesive (PSA) for Mechanical Design
… demonstrated with Beam-on-Elastic Foundation, Shear Lag, and Shape Factors. Design examples successfully demonstrated the application of all of these models in the analysis and design of simple adhesive joints. The material properties of PSAs are a function of loading/displacement rate, …
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Bending behavior of concrete T-beams reinforced with glass fiber-reinforced polymer (GFRP) bars
… point bending to study the factors cited above. Shear lag effect was established based on the strains measured along the width of compressive flange at mid-span. Based on the test results and theoretical evaluations, design equations to predict bending behavior, deflection, effective flange width …
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Net section rupture in tension members with connection eccentricity
… and proposed as a replacement for the current shear lag factor in determining the effective net area of a WT tension member.
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Interactive Buckling and Post-Buckling Studies of Thin-Walled Structural Members with Generalized Beam Theory
… points at the interfaces. To represent the shear lag effect and nonlinear normal stress distribution in the vicinity of a hole, GBT shear modes with nonlinear warping are included. Modifications are made to the GBT geometric stiffness because of the influence from shear lag effect caused by …
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Interfacial Mechanics in Fiber-Reinforced Composites: Mechanics of Single and Multiple Cracks in CMCs
… are obtained by the ADM and compared to a simple shear-lag model in which a constant sliding resistance is assumed. The results show that the matrix axial stress, which is responsible for further matrix cracking, is accurately predicted by the shear-lag model. Finally, the third issue is multiple …
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Effects of tendon viscoelasticity on the distribution of forces across sutures in a model tendon-to-bone repair
… the balance of forces across sutures. A discrete shear lag approach was developed, and the equations were solved numerically. Results from a model, three-row sutured re-attachment demonstrated that optimized distributions of suture stiffnesses and of the spacing of suture anchors can balance the …
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Characteristics of thermally-induced transverse cracks in graphite-epoxy composite laminates
… finite element analysis and a modified shear-lag analysis. It is shown that a majority of the cross-ply laminates experienced transverse cracking during the initial cool-down to -250°F whereas the quasi-isotropic laminates remained uncracked. All cross-ply laminates and the …
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Stiffness reduction resulting from transverse cracking in fiber- reinforced composite laminates
… models were evaluated. A one dimensional shear lag model was used to predict longitudinal stiffness as a function of crack density for the [0,90₃]<sub>s</sub> and 90₃,0]<sub>s</sub> laminates. Correlation between theory and experiment was good. A modified laminate analysis was used to …
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ASPECTS OF RECYCLING OF CARBON FIBRE REINFORCED POLYETHERETHERKETONE (CF/PEEK)
… with a simple mathematical model, the Cox Shear-Lag model. Mechanical testing such as tensile and flexural tests were conducted. Differential Scanning Calorimetry (DSC) was used to investigate the recycled material's crystallinity and also its transition temperature. Other techniques such …
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Experimental and Theoretical Studies of Friction and Adhesion of Elastomeric Materials
… and quantitatively predicted using an extended shear lag model. We believe that this study provides insights into the effect of axial compliance on the frictional response of materials, paving the way for design and optimization of systems where the static and kinetic friction forces play an …
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Sandwich Plate System Bridge Deck Tests
… five to ten percent of the predicted values. Shear lag in the half scale bridge was studied, and an effective width to be used for design purposes was determined. The effective width of the half scale simple span sandwich plate bridge deck was determined to be the physical width. Finally, …
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Analysis of matrix damage in single fiber composites
… with/without interfacial debonding. A consistent shear-lag model in cylindrical coordinates is developed to achieve this. The governing equations are solved using an eigen value technique. When a fiber is partially is debonded, compressive stresses due to resin shrinkage and difference in thermal …
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