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RISTabu Search Strategies for Variable Speed Limit Control at a Lane Drop Bottleneck
Publisher: American Society of Civil Engineers
Abstract: A tabu search–based algorithm is developed in this study and applied for optimizing a variable speed limit (VSL) control system. A macroscopic traffic flow model is used to predict the traffic states over the prediction ...
A Universal and Efficient Quadrilateral Shell Element Based on Absolute Nodal Coordinate Formulation for Thin Shell Structures With Complex Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work proposes a new quadrilateral shell element to analyze large deformations or rotations of membrane or shell structures. The element is an improvement of the previously proposed gradient-deficient quadrilateral ...
A Computational Conformal Geometry Approach to Calculate the Large Deformation of Plates/Shells With Arbitrary Shapes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High-accuracy numerical methods to solve the nonlinear Föppl–von Kármán (FvK) equations usually work well only in simple domains such as rectangular regions. Computational conformal geometry (CCG) provides a systematic ...
Developing a Systematic Method for Identifying and Ranking Freeway Bottlenecks Using Vehicle Probe Data
Publisher: American Society of Civil Engineers
Abstract: Traffic congestion and freeway bottlenecks continue to challenge existing transportation networks. This study presents a systematic method to evaluate freeway performance and locate and rank freeway bottlenecks while ...
Optimal Variable Speed Limit Control at a Lane Drop Bottleneck: Genetic Algorithm Approach
Publisher: American Society of Civil Engineers
Abstract: This paper develops a genetic algorithm (GA) approach to solving the variable speed limit (VSL) control problem at a lane drop bottleneck. A multiobjective nonlinear integer model is formulated for the VSL control. The ...
A New Three-Dimensional Moving Timoshenko Beam Element for Moving Load Problem Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new three-dimensional moving Timoshenko beam element is developed for dynamic analysis of a moving load problem with a very long beam structure. The beam has small deformations and rotations, and bending, shear, and ...
On the Approximation of the Full Mass Matrix in the Rotational-Coordinate-Based Beam Formulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel approach is developed to approximate the full mass matrix in the rotational-coordinate-based beam formulation, which can improve the efficiency of calculating its inverse in dynamic analyses. While the rotational ...
An Efficient Galerkin Averaging-Incremental Harmonic Balance Method Based on the Fast Fourier Transform and Tensor Contraction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An efficient Galerkin averaging-incremental harmonic balance (EGA-IHB) method is developed based on the fast Fourier transform (FFT) and tensor contraction to increase efficiency and robustness of the IHB method when ...
Dynamic Analysis of Power Transmission Lines With Ice-Shedding Using an Efficient Absolute Nodal Coordinate Beam Formulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Dynamic analysis of power transmission lines with ice-shedding is conducted in this work. The power transmission line is first simplified as a uniform slender round beam. While the beam can have large displacements, ...
A New Triangular Thin Shell Element Based on the Absolute Nodal Coordinate Formulation for Complex Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work proposed a new Hermite triangular thin shell element based on the absolute nodal coordinate formulation to model thin shells with complex curved surfaces. Three techniques are adopted to enhance its universality ...