A5021123510- Vibration and Dynamic Analysis
- Mechanical and Optical Resonators
- Advanced MEMS and NEMS Technologies
- Fluid Dynamics and Vibration Analysis
- Acoustic Wave Resonator Technologies
- Mechanical stress and fatigue analysis
- Advanced ceramic materials synthesis
- Offshore Engineering and Technologies
- Fluid Dynamics Simulations and Interactions
- Aluminum Alloys Composites Properties
- Oil and Gas Production Techniques
- Anodic Oxide Films and Nanostructures
- Force Microscopy Techniques and Applications
- Concrete Corrosion and Durability
- Water Systems and Optimization
- Flow Measurement and Analysis
- Aluminum Alloy Microstructure Properties
- Corrosion Behavior and Inhibition
- Advanced Fiber Optic Sensors
- Additive Manufacturing and 3D Printing Technologies
- Islamic Finance and Banking Studies
- Global Socioeconomic and Political Dynamics
- Structural Engineering and Vibration Analysis
- Wind and Air Flow Studies
- Photonic and Optical Devices
King Abdullah University of Science and Technology
2016-2023
Saudi Aramco (Saudi Arabia)
2021-2023
Saudi Aramco (United States)
2022-2023
University of Liège
2021
University of Maryland, College Park
2021
Universidade da Coruña
2021
Barry University
2021
Virginia Tech
2021
King Fahd University of Petroleum and Minerals
2012-2013
We investigate theoretically and experimentally the two-to-one internal resonance in micromachined arch beams, which are electrothermally tuned electrostatically driven. By applying an electrothermal voltage across arch, ratio between its first two symmetric modes is to two. model nonlinear response of beam during using multiple scales perturbation method. The solution expanded up three orders considering influence quadratic nonlinearities, cubic simultaneous excitations at higher AC...
Abstract The dynamics of micro-/nanoelectromechanical systems (M/NEMS) curved beams have been thoroughly investigated in the literature, commonly for arch actuated with electrodes facing their concave surface. Except few works on slacked carbon nanotubes, literature lacks a deep understanding resonators, where electrode is placed front convex beam This paper investigates resonators as experiencing combined internal resonances. resonator excited using an antisymmetric partial while...
We investigate modeling the dynamics of an electrostatically actuated resonator using perturbation method multiple time scales (MTS). First, we discuss two approaches to treat nonlinear parallel-plate electrostatic force in equation motion and their impact on application MTS: expanding Taylor series multiplying both sides with denominator forcing term. Considering a spring–mass–damper system excited near primary resonance, it is concluded that, consistent truncation higher-order terms,...
In this work, we investigate numerically the linear vibrations of inclined risers using Galerkin approach. The riser is modeled as an Euler-Bernoulli beam accounting for nonlinear mid-plane stretching and self-weight. After solving initial deflection due to self-weight, a expansion fifteen axially loaded mode shapes are used solve eigenvalue problem around static equilibrium configuration. This yields natural frequencies exact various values inclination angles applied tension. obtained...
In this paper, we suggest a new algorithm for leak detection and localisation on gas pipeline. We decompose the pipeline in different sections of length L. put two pressure sensors at beginning studied section location x = iL other end located (i + 1)L where i 0, …, N – 1 is number also use mass flow rate each section. Our uses gradient squared to locate leak. show that our allows with 1.2% error distance. tested 15 km average was around 180 m. Therefore, 180/15,000 1.2%.
Abstract In this work, we explore the dynamics of inclined marine risers subjected to pulsating internal fluid flow. The presence geometric nonlinearities with static deflection makes response riser different from conventional top tension when flows. At first, model is solved via Galerkin method, and results are compared validated using perturbation analysis. Then, studied under various parameters flow frequencies. excitation fluctuations causes vibrate at primary secondary parametric...