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The Stability of Plane Poiseuille Flow in a Finite-Length Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The linear stability of plane Poiseuille flow through a finite-length channel is studied. A weakly divergence-free basis finite element method with streamline upwind Petrov–Galerkin (SUPG) stabilization is used to formulate ...
Cross Wind Effects on Vehicle–Track Interactions: A Methodology for Dynamic Model Construction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An efficient and accurate model for the dynamic assessment of vehicle-track behavior subjected to cross wind actions is developed in this paper, where the wind–vehicle–track interaction is regarded as a coupled vibration ...
A Reduced Order Model of the Mean Properties of a Turbulent Wall Boundary Layer at a Zero Pressure Gradient
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel twoequations model for computing the flow properties of a spatiallydeveloping, incompressible, zeropressuregradient, turbulent boundary layer over a smooth, flat wall is developed. The mean streamwise velocity ...
A Three-Dimensional Dynamic Model for Railway Vehicle–Track Interactions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In light of two wheel–rail contact relations, i.e., displacement compatibility and force equilibrium, a newly developed three-dimensional (3D) model for vehicle–track interactions is presented in this paper. This model is ...
Global Sensitivity Analysis for Vehicle–Track Interactions: Special Attention on Track Irregularities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic vehicle–track interactions are complex processes due to the highly nonlinear terms and spatially varying excitations in vehicle design, track maintenance, dynamic prediction, etc. Therefore, it is of importance ...
Curved Ballasted Track–Vehicle Dynamic Interaction: Effects of Curve Radius and Track Structural Nonlinearity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, a model for characterizing the ballasted track–vehicle interaction is presented. The vehicle is modeled as a multirigid-body system consisting of a car body, two bogie frames, and four wheelsets, and the track ...
Nonlinear Control of Axisymmetric Swirling Flows in a Long Finite Length Pipe
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Feedback stabilization of inviscid and high Reynolds number, axisymmetric, swirling flows in a long finitelength circular pipe using active variations of pipe geometry as a function of the evolving inlet radial velocity ...
A Mechanistic Study on the Inhibition of Zinc Behavior During Laser Welding of Galvanized Steel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The characteristics of zinc behavior that the zinc layer is vaporized and ionized during laser welding of galvanized steel are closely related to the stability of the molten pool, and the weld keyhole formation, easily ...
New Method of Strengthening Reinforced Concrete Square Columns by Circularizing and Wrapping with Fiber-Reinforced Polymer or Steel Straps
Publisher: American Society of Civil Engineers
Abstract: This study investigates three methods of strengthening existing reinforced square concrete columns under different loading conditions. Four groups of sixteen reinforced concrete square columns were made from normal-strength ...
Transportation Demands of Low-Mobility Individuals: Case Study in Wenling, China
Publisher: American Society of Civil Engineers
Abstract: Generally, low-mobility individuals, those with less access to transportation options and who are often marginalized in the social environment, can be divided into three groups: older adults, low-income individuals, and ...