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RISShear Lag Analysis in Prestressed Concrete Box Girders
Publisher: American Society of Civil Engineers
Abstract: Most studies on shear lag effect in box girders are only concerned about concentrated loads and uniformly distributed loads. In this paper, a finite-element method based on the variational principle is presented to analyze ...
Finite Beam Element Considering Shear-Lag Effect in Box Girder
Publisher: American Society of Civil Engineers
Abstract: A finite-element method considering the interaction of the bending and shear-lag deformation of a box girder was established. Meanwhile a shear-lag-induced stiffness matrix was defined. The stiffness matrices considering ...
Series Solution of Three-Dimensional Unsteady Laminar Viscous Flow Due to a Stretching Surface in a Rotating Fluid
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An analytic technique, namely the homotopy analysis method, is applied to solve the Navier–Stokes equations governing unsteady viscous flows due to a suddenly stretching surface in a rotating ...
Analysis of Effect of Dead Loads on Natural Frequencies of Beams Using Finite-Element Techniques
Publisher: American Society of Civil Engineers
Abstract: In this paper, a conception of load-induced stiffness matrix is developed, and a beam element for using the finite-element method, which takes into consideration the stiffening effect of dead loads, is proposed. The element ...
Application of Homotopy Analysis Method in Nonlinear Oscillations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we apply a new analytical technique for nonlinear problems, namely the Homotopy Analysis Method (Liao 1992a), to give two-period formulas for oscillations of conservative ...
Cracking Behavior of Environmental Barrier Coatings/Ceramic Matrix Composite System Using Acoustic Emission and Digital Image Correlation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An investigation into the cracking behavior of advanced environmental barrier coating/woven SiC/SiC ceramic matrix composite (CMC) system under uni-axial tension testing was performed in this study. The effect of substrate ...
In Situ and Ex Situ Measurement of Stresses in Environmental Barrier Coatings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ceramic matrix composites (CMCs) offer a step improvement in temperature capability over the current best high-temperature superalloys for gas turbine applications. Silicon carbide (SiC)-based CMCs react with water vapor ...
In Situ and Ex Situ Measurement of Stresses in Environmental Barrier Coatings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ceramic matrix composites (CMCs) offer a step improvement in temperature capability over the current best high-temperature superalloys for gas turbine applications. Silicon carbide (SiC)-based CMCs react with water vapor ...
A Handheld Sampler for Collecting Organic Samples from Shallow Hydrothermal Vents
Publisher: American Meteorological Society
Abstract: his study describes a new handheld sampler, specially designed to be deployed by scuba divers, to collect fluid samples from shallow hydrothermal vents. The new sampler utilizes a syringe-like titanium sampling bottle with ...
Collection of Gas-Tight Water Samples from the Bottom of the Challenger Deep
Publisher: American Meteorological Society
Abstract: AbstractA new gas-tight pair sampler was designed for the collection of gas-tight fluid samples from the hadal zone. The sampler uses two titanium bottles and one sampling valve to collect two samples at once. The sampler ...