Results 21 to 30 of about 520,545 (245)

The effect of the friction pendulum isolation system on the seismic response of structures located on different types of soils [PDF]

open access: yesمجله مدل سازی در مهندسی, 2022
Conventional seismic design and reinforcement methods are based on increasing the capacity of the structure. That is, the bearing capacity of the structure is increased by increasing its strength and ductility, which is not possible in the reinforcement ...
Alireza Jafari   +2 more
doaj   +1 more source

The dynamic behaviour of a wheel flat of a railway vehicle and rail irregularities

open access: yesTransport, 2015
The article examines a mathematical model for the system ‘Railway Vehicle Wheel–Track’ that allows examining the interaction between a wheel flat and a rail in the vertical plane.
Marijonas Bogdevičius   +5 more
doaj   +1 more source

Numerical Simulation of Rockfall Protection Embankments in Natural Soil

open access: yesGeosciences, 2023
Rockfall events represent a significant hazard in mountainous regions, putting human safety and critical infrastructure at risk. Various mitigation devices are available, among which, Rockfall protection embankments (RPEs) located in natural soil are ...
Stefano Vigna   +3 more
doaj   +1 more source

Two-Dimensional Correlation Analysis of Periodicity in Noisy Series: Case of VLF Signal Amplitude Variations in the Time Vicinity of an Earthquake

open access: yesMathematics, 2022
Extraction of information in the form of oscillations from noisy data of natural phenomena such as sounds, earthquakes, ionospheric and brain activity, and various emissions from cosmic objects is extremely difficult.
Andjelka B. Kovačević   +3 more
doaj   +1 more source

Numerical Investigations of Synthetic Jet Control Effects on Iced Airfoils

open access: yesEnergies, 2023
Based on the numerical method, the effects of synthetic jet control (SJC) on the aerodynamic characteristics of iced airfoils are systematically analyzed for the first time.
Xi Chen   +3 more
doaj   +1 more source

A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

open access: yesJournal of Marine Science and Engineering, 2022
This paper reviews the recent development of numerical modelling of local scour around hydraulic and marine structures. The numerical models for simulating local scour are classified into five categories: sediment transport rate models, two-phase models,
Ming Zhao
doaj   +1 more source

A NUMERICAL METHOD USED FOR KINEMATIC SURVEY OF A COMPLEX MECHANICAL SYSTEM WITH TWO ROTATING RIGID SOLIDS AND TWO RIGID SOLIDS IN TRANSLATIONAL MOTION [PDF]

open access: yesFiabilitate şi Durabilitate, 2012
The paper presents a numerical method used for kinematical survey of a complex mechanical systemconsisting of four rigid solids of which two perform a rotational motion and the other two rigid solids intranslational motion.
Vladimir Dragoş TĂTARU   +1 more
doaj  

Review of Real-time Simulation of Power Electronics

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
Real-time simulation of power electronics has been recognized by the industry as an effective tool for developing power electronic devices and systems.
Fei Li   +6 more
doaj   +1 more source

Natural Frequency Analysis of Monopile Supported Offshore Wind Turbines Using Unified Beam-Column Element Model

open access: yesJournal of Marine Science and Engineering, 2023
Assessment of the natural frequency of the offshore wind turbine (OWT) system is a critical task in design to avoid resonance. The natural frequency of the monopile supported OWT may change during operation and needs to be calculated regularly ...
Jian-Hong Wan   +3 more
doaj   +1 more source

Fixed-point theory and numerical analysis of an epidemic model with fractional calculus: Exploring dynamical behavior

open access: yesOpen Physics, 2023
The human immunodeficiency virus, which attacks the immune system and especially targets CD4 cells that are crucial for immunological defense against infections, is the cause of the severe illness known as acquired immunodeficiency syndrome (AIDS).
Alshehry Azzh Saad   +3 more
doaj   +1 more source

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