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RISApplication of Proper Orthogonal Decomposition in Fast Fourier Transform—Assisted Multivariate Nonstationary Process Simulation
Publisher: American Society of Civil Engineers
Abstract: The classic spectral representation method (SRM)-based nonstationary process simulation algorithm is used extensively in the engineering community. However, it is less efficient owing to the unavailability of fast Fourier ...
Wind Velocity Field Simulation Based on Enhanced Closed-Form Solution of Cholesky Decomposition
Publisher: ASCE
Abstract: The spectral matrix decomposition is a significant task for a wind velocity field simulation. However, the decomposition requires significant computational time and memory for large-scale structures with a large number of ...
Electrochemical Behavior of Fine-Grained Steel in Alkaline Solutions in the Presence of Chlorides
Publisher: American Society of Civil Engineers
Abstract: Fine-grained (FG) steel is largely used for high-speed railway applications because of its high yield strength. Its corrosion behavior is equally critical to the service life of reinforced concrete structure, especially ...
Implementation of Periodicity Ratio in Analyzing Nonlinear Dynamic Systems: A Comparison With Lyapunov Exponent
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present research intends to investigate the characteristics of the periodicity ratio and its implementation in analyzing the nonlinear behavior of dynamic systems governed by second-order ...
Characterizing Dependence of Extreme Wind Pressures
Publisher: American Society of Civil Engineers
Abstract: The prediction of the extreme value of the wind pressure receives significant attention from the wind engineering community. However, the correlation among extreme wind pressures associated with different locations on the ...
The Role of Convectively Generated Gravity Waves on Convective Initiation: A Case Study
Publisher: American Meteorological Society
Abstract: case study of a convection initiation (CI) event involving a mesoscale gravity wave is presented. This severe convection event occurred in east China on 5 June 2009. High-frequency automatic weather station (AWS) data, ...
Efficient Nonstationary Stochastic Response Analysis for Linear and Nonlinear Structures by FFT
Publisher: American Society of Civil Engineers
Abstract: Based on the fast Fourier transform (FFT), an efficient and accurate algorithm was developed for improving the computational efficiency of structural responses under nonstationary stochastic excitations. In this method, ...
Estimation of Probabilistic Extreme Wind Load Effects: Combination of Aerodynamic and Wind Climate Data
Publisher: American Society of Civil Engineers
Abstract: A refined full-order method is presented for estimating the extreme wind load effects of rigid structures with given mean recurrence intervals (MRIs) by combining the distributions of annual maximum wind speed and extreme ...
Microstructurally Related Model for Predicting Behavior of Unsaturated Soils with Double Porosity in Triaxial Space
Publisher: ASCE
Abstract: The microstructure can have an important impact on the hydraulic and mechanical behaviors of unsaturated soil; therefore, it must be considered in constitutive models to enable accurate predictions of soil behavior. This ...
A Mechanism for Offshore Transport across the Gulf Stream
Publisher: American Meteorological Society
Abstract: This paper explores a possible mechanism to explain an atypical phenomenon observed in the Gulf Stream between the Florida Straits and Cape Hatteras, namely, upgradient momentum transport and associated eddy-to-mean energy ...