A5024611003- Vibration Control and Rheological Fluids
- Vibration and Dynamic Analysis
- Acoustic Wave Phenomena Research
- Structural Health Monitoring Techniques
- Composite Structure Analysis and Optimization
- Probabilistic and Robust Engineering Design
- Fractional Differential Equations Solutions
- Ultrasonics and Acoustic Wave Propagation
- Quasicrystal Structures and Properties
- Dynamics and Control of Mechanical Systems
- Seismic Performance and Analysis
- Numerical methods for differential equations
- Electromagnetic Simulation and Numerical Methods
- Higher Education Learning Practices
- Microwave Imaging and Scattering Analysis
- Theoretical and Computational Physics
- Liquid Crystal Research Advancements
- Multidisciplinary Science and Engineering Research
- Educational Technology in Learning
- Advanced Thermodynamics and Statistical Mechanics
- Engineering and Information Technology
- Educational Technology and Assessment
- Competency Development and Evaluation
- Robotic Mechanisms and Dynamics
- Online Learning and Analytics
Universitat Politècnica de València
2015-2024
Imperial College London
2024
Universitat de València
2014-2015
Nonviscously damped vibrating systems are characterized by dissipative mechanisms depending on the time-history of response velocity, introduced in physical models using convolution integrals involving hereditary kernel functions. One most used damping viscoelastic is Biot's model, whose functions assumed to be exponential kernels. The free-motion equations these types nonviscous lead a nonlinear eigenvalue problem enclosing certain number so-called modes with nonoscillatory nature....
Abstract Over the past 3 decades, phononic crystals experienced revolutionary development for understanding and utilizing mechanical waves by exploring interaction between structures. With significant advances in manufacture technologies from nanoscale to macroscale, attract researchers diverse disciplines study abundant directions such as bandgaps, dispersion engineering, novel modes, reconfigurable control, efficient design algorithms so on. The aim of this roadmap is present current state...
In structural dynamics, energy dissipative mechanisms with nonviscous damping are characterized by their dependence on the time-history of response velocity, which is mathematically represented convolution integrals involving hereditary functions. The widespread Biot model assumes that such functions exponential kernels, modify eigenvalues' set so as many real eigenvalues (named eigenvalues) kernels added to system. This paper focused study a mathematical characterization eigenvalues....
The involvement of various stakeholders, aligning diverse interests, and evolving industry requirements are some areas that need careful consideration. dynamics power authority between collaborating partners can affect the efficacy collaborative relationship; hence, further study is required to identify obstacles in such partnerships propose solutions for overcoming them. This aims build a collaboration paradigm TVET engineering sector industry, emphasizingcurriculum development credentials....
A new iterative method for polynomial root-finding based on the development of two novel recursive functions is proposed. In addition, concept pivots associated with these introduced. The present property lying close to some roots under certain conditions; this closeness leads us propose them as efficient starting points proposed sequences. Conditions local convergence are studied demonstrating that sequences converge linear velocity. Furthermore, an a priori checkable global test inside...
This paper presents a new four-node composite element, which incorporates nd delaminations through its thickness. Based on the extended finite element method (X-FEM) technology, is particularized CLT (classical laminate theory). Delamination considered in kinematic equations with additional degrees of freedom. The result quadrilateral requiring only two single FEM (finite method) formulations, bending one and membrane one. An important that this formulation has same accuracy as when separate...
Viscoelastic materials are widely used in structural dynamics for the control of vibrations and energy dissipation. They characterized by damping forces that depend on history velocity response via hereditary functions involved convolution integrals, leading to a frequency‐dependent matrix. In this paper, one‐dimensional beam structures with viscoelastic based fractional derivatives considered. work, construction new equivalent viscous system fictitious parameters but capable reproducing...
In this paper, exact closed forms of critical damping manifolds for multiple-kernel-based nonviscous single-degree-of-freedom oscillators are derived. The dissipative forces assumed to depend on the past history velocity response via hereditary exponential kernels. model depends several parameters, considered variables in context paper. Those parameter combinations which establish thresholds between induced overdamped and underdamped motion called manifolds. If such represented a coordinate...
In this paper, wave propagation in structured media with quasiperiodic patterns is investigated. We propose a methodology based on Sturmian sequences for the generation of mechanical systems from given parameter. The approach presented general form so that it can be applied to waveguides different nature, as long they modeled transfer matrix method. bulk spectrum obtained and its fractal nature analyzed. For validation theoretical results, three numerical examples are presented. spectra show...
A novel numerical approach to compute the eigenvalues of linear viscoelastic oscillators is developed. The dissipative forces these systems are characterized by convolution integrals with kernel functions, which in turn contain a set damping parameters. free-motion characteristic equation defines implicitly as functions such After choosing one them independent variable, key idea current paper obtain differential whose solution can be considered, under certain conditions, good approximation....
Mechanical vibrations as subject can be found within many Engineering and Science Degrees. To achieve that the students understand mathematics its physical interpretation is objective we should get docents. In this paper describe how to create a simple graphical model of single degree freedom vibrating system allowing us visualize concepts like above damping, resonance or forced vibrations. For that, use popular symbolic software Wolfram Mathematica with which, without an excessive...
Hyperuniformity is a property of certain heterogeneous media in which density fluctuations the long-wavelength range decay to zero. In reciprocal space this behavior translates into Fourier intensities near small wave numbers. paper, quasiperiodic tilings constructed by word concatenation are under study. The lattice generated from parameter given its continued fraction so that quasiperiodicity emerges for infinity when irrational generators taken consideration. Numerical simulations show...
In this work, we present a comprehensive method for determining the dispersion relation in one-dimensional waveguides, applicable to wide range of structures, regardless their specific characteristics. This general framework employs unified mathematical model, referred as *generalized beams*, where varying types waveguides and scatterers are incorporated by adjusting certain parameters. The generalized beam consists host waveguide, which is homogeneous elastic structure with physical...
We propose a new model to approximate the wave response of waveguides containing an arbitrary number small inclusions. The theory is developed consider any one-dimensional waveguide (longitudinal, flexural, shear, torsional waves or combination them by mechanical coupling), inclusions with different material and/or sectional properties. exact problem modelled through formalism generalised functions, Heaviside function accounting for discontinuous jump in properties For asymptotically...
In recent decades, there has been a significant advancement in the field of phononic crystals, thanks to development innovative techniques for controlling waves complex media. One area particular interest involves materials comprising host medium with an array point scatterers. Hyperuniform and stealth disordered are especially noteworthy, as they enable identification scatterers that mitigate scattering within certain frequency range while exhibiting heterogeneity another range. The Born...