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RISNumerical Study of Multistage Serial and Parallel Configurations of Thermoacoustic Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The focus of this study is on serial and parallel configurations of a multistage thermoacoustic engines (TAE). Thermoacoustics integrates fluid dynamics, thermodynamics, and acoustics to explain the interactions existing ...
On the Contact of Curved Rough Surfaces: Contact Behavior and Predictive Formulas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The statistical microcontact models of Greenwood–Williamson (GW), Kogut–Etsion (KE), and Jackson–Green (JG) are employed along with the elastic bulk deformation of the contacting solids to predict the characteristics ...
Experimental Investigation of Clear-Water Local Scour at Pile Groups
Publisher: American Society of Civil Engineers
Abstract: Experiments of local scour around pile groups are carried out under steady clear-water scour conditions. A variety of conditions including different pile group arrangements, spacing, flow rates, and sediment grain sizes ...
Rough Surface Normal Nanocontact Stiffness: Experimental Measurements and Rough Surface Contact Model Predictions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work presents experimental contact stiffness measurements for various thin films as well as homogenous materials through pressing a flat punch onto a nominally flat rough surface. These materials are typically used ...
Experimental Study of Three-Dimensional Flow Field around a Complex Bridge Pier
Publisher: American Society of Civil Engineers
Abstract: In this paper, three-dimensional turbulent flow field around a complex bridge pier placed on a rough fixed bed is experimentally investigated. The complex pier foundation consists of a column, a pile cap, and a
Damage Detection of Structures Considering Environmental Variations Based on the Deviation Patterns of Natural Frequencies
Publisher: American Society of Civil Engineers
Abstract: The fundamental objective of structural damage detection is to ascertain the presence of damage in the structure under monitoring. Environmental variations (especially temperature) may also cause the aberration of dynamic ...
Effects of Different Geometric Parameters of Complex Bridge Piers on Maximum Scour Depth: Experimental Study
Publisher: ASCE
Abstract: This research experimentally investigated local scour depth around complex bridge piers in a clear-water condition. The term “complex pier” is used to define a bridge pier composed of three different sections: a column, ...
Robust Stabilization for a Class of Nonlinear Singularly Perturbed Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the problem of disturbance attenuation with internal stability for a class of nonlinear singularly perturbed systems via nonlinear H∞ approach is studied. It is shown through a ...
Yield Maps for Single and Bilayer Thin Films Under Scratch
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Finite element (FE) simulations were performed to study yielding in single and bilayer (BL) film systems using a “yield zone map†approach. Onset of yielding was observed at the interface, substrate, surface, and film ...
Discussion of “Clear-Water Local Scour around Pile Groups in Shallow-Water Flow” by Ata Amini, Bruce W. Melville, Thamer M. Ali, and Abdul H. Ghazali
Publisher: American Society of Civil Engineers