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RISInward Flow of Surface Materials at Back-Ends of Billets During Al-Extrusion, Part 1: A Finite Element Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In hot extrusion of Al-profiles, the billet-container boundary is characterized by the sticking condition. The outer surface layer of the billet is stuck to the container wall. At the back-end ...
Sensitivity Analysis of Epistemic Uncertainty on Input Parameters and System Structure Using Dempster-Shafer Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, a method is proposed to conduct a global sensitivity analysis of epistemic uncertainty on both system input and system structure, which is very common in early stage of system development, using Dempster-Shafer ...
Composite Path Tracking Control for Tractor–Trailer Vehicles Via Constrained Model Predictive Control and Direct Adaptive Fuzzy Techniques
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tractor–trailer vehicles will suffer from nonholonomic constraint, uncertain disturbance, and various physical limits, when they perform path tracking maneuver autonomously. This paper presents a composite path tracking ...
A UBET-Simulation Meant for Basic Understanding of the Extrusion of Aluminum Profiles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A plane strain UBET-model, meant for deeper understanding of the material flow in the extrusion of complex shaped aluminum profiles is presented. In order to get the desired straight shape of ...
Stochastic Nonlinear Programming Based on Uncertainty Analysis for DNAPL-Contaminated Aquifer Remediation Strategy Optimization
Publisher: American Society of Civil Engineers
Abstract: Surrogate-based simulation-optimization techniques are widely applied in developing optimal remediation strategies that increase the efficiency and reduce the cost of surfactant-enhanced aquifer remediation (SEAR) when ...
Experimental Study of Crack Identification in Thick Beams with a Cracked Beam Element Model
Publisher: American Society of Civil Engineers
Abstract: Model-based crack identification in beam-like structures has been a classic problem. The authors have recently developed a framework to identify crack damage in beams based on a cracked beam element model, which stems from ...
Simplified Models of Progressive Collapse Response and Progressive Collapse-Resisting Capacity Curve of RC Beam-Column Substructures
Publisher: American Society of Civil Engineers
Abstract: Based on analysis of a progressive collapse mechanism, this paper presents a simplified model for static analysis of progressive collapse response of RC beam-column substructures under midspan point loading. The proposed ...
Material Behavior Modeling in Machining Simulation of 7075 T651 Aluminum Alloy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate modeling of workpiece material behavior in machining is critical to analyze and design a process. The workpiece material behavior in the machining process involves dynamic flow stress and damage/fracture behavior, ...
Evaluation of Apparent Permeability and Field Assessment of Aged Asphalt Capping Systems
Publisher: American Society of Civil Engineers
Abstract: An asphalt cap system physically isolates contaminated soil from surface runoff to reduce contaminant migration from soil to groundwater. It is one of the most frequently selected remedies for managing sites contaminated ...
The Influence of Tropical heating Displacements on the Extratropical Climate
Publisher: American Meteorological Society
Abstract: The hypothesis is advanced that a latitudinal shift in the tropical convective heating pattern can significantly alter temperatures in the extratropics. Results of a simplified GCM show that the shift of a prescribed ...