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2 edition of Effect of amplitude on damping and wave propagation in granular materials found in the catalog.

Effect of amplitude on damping and wave propagation in granular materials

J. R. Hall

Effect of amplitude on damping and wave propagation in granular materials

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  • 3 Currently reading

Published .
Written in English


Edition Notes

Statementby J.R. Hall.
ID Numbers
Open LibraryOL21158197M

Wave Propagation in Solid and Porous Half-Space Media Hamid R. Hamidzadeh, Liming Dai, Reza N. Jazar (auth.) This book covers advanced topics in dynamic modeling of soil-foundation interaction, as well as the response of elastic semi-infinite media from an applications viewpoint. Advanced concepts such as solutions for analysis of elastic semi. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation. Ultrasonic guided wave propagation in a repaired stiffened composite panel. Prediction of the amplitude of ultrasound reflection from rough defects (Conference Presentation) Guided wave mode conversion phenomenon in composite materials: numerical and experimental study. When a container filled with granular material is subjected to sinusoidal vibration in microgravity, dependent on the amplitude of the oscillation, the granulate may exhibit one of two distinct dynamical modes: at low amplitude, a gas-like state is observed, where the particles are relatively homogeneously distributed within the container, almost independent of the phase of the .


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Effect of amplitude on damping and wave propagation in granular materials by J. R. Hall Download PDF EPUB FB2

The propagation of the fluid wave in granular materials and particularly in ocean sediments in recent years are fairly numerous. A recent paper by Shumway () which shows the progress in this field will be dis cussed. Also the work of Ferrero and Sacerdote (), Nolle () and Nakamura () will be mentioned briefly.

For further. Pressure wave propagation in a granular bed Article (PDF Available) in Physical Review E 72(3 Pt 1) October with 75 Reads How we measure 'reads'. Considerable interest in the dynamic response of granular media exists in the geomechanics community typically involving acoustics and wave propagation in sand, gravel and rock materials.

Additional applications are also found in material processing involving the dynamic compaction and forming of particulate and powder by: understand the wave propagation in granular metamaterials, w e compared the wave dynamics of granular metamaterials with those of conventional granular crystals such as monoatomic and diatomic chains.

In a single degree of freedom vibration system, three different quantities, namely, mass (m), viscous damping coefficient (c) and stiffness (k) characterize vibration (displacement or transmission, x) of an acoustic component.This analogy can be as well applied to the transmission of an acoustic wave through the pavement material and the noise damping Cited by: Summary of wave propagation methods for determining stiffness of geomaterials.

In particular, pulse transmission method using piezoelectric transducers have been commonly used to monitor P- and S-wave propagation in many different types of geomaterials (LawrenceSheeran et al.WoodsYesiller et al. ).Cited by: 5. Hall, J. R., Jr., “Effect of Amplitude on Damping and Wave Propagation in Granular Materials”, Thesis presented to the University of Florida at Gainsville, Florida, inin Partial Fulfillment of the requirements for the degree of Doctor of Philosophy.

Google ScholarCited by: 6. Without the mass-weighted damping zone, the numerical wave profiles show constructive- or destructive interference due to the effect of the reflected wave and it cannot be uniformly calculated.

However, using the mass-weighted damping zone, wave heights and velocities are similar to the theoretical formula, and wave profiles can be calculated. Sound propagation in dense, frictional granular materials O.

Mouraille & S. Luding Particle Technology, DelftChemTech, JulianalaanBL Delft, Netherlands ABSTRACT: The understanding of the sound propagation mechanisms (dispersion, scattering, power-spectra, etc.) inside dense granular matter is still a challenge.

The present work is aimed to investigate the capability of the discrete element method (DEM) to model properly wave propagation in solid materials, with special focus on the determination of elastic properties through wave velocities. Reference micro–macro relationships for elastic constitutive parameters have been based on the kinematic hypothesis as well as obtained Author: Jerzy Rojek, Nikhil Madan, Szymon Nosewicz.

In the last 25 years much has been learned about the properties which affect dynamic response and wave propagation and ways to measure those properties. For analysis and design of structures and for interpretation of wave propagation phenomena, the key soil/rock properties are shear modulus, material damping and unit by: 3.

Nonlinear wave propagation in materials, where distribution function of mesoscopic mechanical elements has very different scales of variation along and normally to diagonal of Preisach–Mayergoyz space, is analyzed.

An evolution equation for strain wave, which takes into account localization of element distribution near the diagonal and its slow variation along the Cited by:   This monograph deals with the behavior of essentially nonlinear heterogeneous materials in processes occurring under intense dynamic loading, where microstructural effects play the main role.

This book is not an introduction to the dynamic behavior of materials, and general information available in other books is not included. The material herein is presented 5/5(1). The resonant column method is established as a standard laboratory method for the study of the elastic properties of soils.

The study presents low-amplitude resonant column test results on volcanic sands with intra-particle voids. The experiments were performed on dry samples prepared at variable relative densities and tested in torsional mode of : Kostas Senetakis, Anastasios Anastasiadis.

Soil behaviour is usually assumed to be linear elastic, but in many cases the effect of viscous damping or hysteretic damping, due to plastic deformations, is also considered.

Special features are: the analysis of wave propagation in saturated compressible porous media, approximate analysis of the generation of Rayleigh waves, the analysis of. Moreover, the effect of material damping is even more prominent at this excitation frequency, as the main wave is reduced to about 29% at x 1 = 11 cm and to about 10% at x 1 = 17 cm.

Conclusion Through a detailed dispersion analysis, it has been shown that the segments above and below a disbond in a honeycomb sandwich panel guide ultrasonic Cited by: 4. Waste automobile tires are used as additives or replacements instead of traditional materials in civil engineering works.

In geotechnical engineering, tires are shredded to certain sizes and mixed with soil, especially used as backfill material behind retaining walls or fill material for roadway embankments. Compared to soil, rubber has high damping capacity and low shear : Dervis Volkan Okur, Seyfettin Umut Umu.

Full text of "Wave Propagation in Materials for Modern Applications" See other formats. Large Amplitude Vibration of a Circular Plate With Concentric Rigid Mass differential equations proposed by Berger and extended by Nash and Modeer are applied to obtain natural frequencies of a circular plate with concentric rigid part at its center in large amplitude vibrations.

Influence of Lateral Constraints on Wave Propagation in Cited by: 8. The other main type of wave is the transverse wave, in which the displacements of the medium are at right angles to the direction of propagation.

Transverse waves, for instance, describe some bulk sound waves in solid materials (but not in fluids); these are also called "shear waves" to differentiate them from the (longitudinal) pressure waves.

Longitudinal wave motion in width-constrained auxetic plates. Teik-Cheng Lim. Furthermore, an attempt is made to present a nonlinear model, though the effects of finite wave amplitude are neglected in the interest of allowing the formulation to be more tractable.

It should now be pointed out that for a longitudinal wave to propagate through Cited by: 8. ICE manual of geotechnical engineering: Volume I. (wave amplitude). However, in real soils the propagating waves are attenuated due to inherent material damping of the soil and geometric damping, where geometric damping relates to the loss of energy as the wavefront increases in length as it radiates out from the source.

Figure Publications by the Acoustics Group. How to adapt numerical simulation of wave propagation and ultrasonic laboratory experiments to be comparable — A case study for a complex topographic model D EM modelling in TIV conductive media and the effect of anisotropy in normalized amplitude responses Journal of Geophysics and Engineering.

Shen, H.H. Granular pressure–temperature relation during regime change in a simple shear state () Theoretical & Applied Mechanics Letters 3, Wang, R. and Shen, H.H. () On developing a continuum model for wave propagation in ice-covered seas. Sound engineering pro audio terms audio and sound engineer's terms audio words - search engine for calculations glossary technique special field music sound recording - Eberhard Sengpiel sound engineering Sengspiel ebs sound recording glossary technical Pro audio engineering terms web search.

Vibration isolation is the process of isolating an object, such as a piece of equipment, from the source of vibrations.

Vibration is undesirable in many domains, primarily engineered systems and habitable spaces, and methods have been developed. The solitary waves supported by nonlinear granular chains have a spatial wavelength of roughly five particle diameters (although the situation is more subtle than this, as we will discuss in sections and ) and a propagation speed that is proportional to their amplitude.

These spatial and temporal properties translate to signals that. This first of 3 volumes from the inaugural NODYCON, held at the University of Rome, in Februarypresents papers devoted to Nonlinear Dynamics of Structures, Systems and Devices.

It features both well-established streams of research as. ~proportional to the amplitude of the wave squared ♥Do continuous wave tx require damping material.

~No they do not. (MHz)=materials propagation speed (mm/us)/ 2X thickness(mm) ♥when a PZT crystal is 1/2 as thick, the sounds fq is: ~twice as high. Proc. SPIESmart Structures and Materials Damping and Isolation, pg (27 June ); doi: / Read Abstract + The paper studies the influence of a shape memory alloy (SMA) element on the dynamic response of a single-degree-of-freedom- system, representing a structural building under earthquake excitation.

The Bathe method provides high accuracy in both the wave propagation and the fluid-structure-interaction response. Keywords: Fluid structure interaction - Wave propagation - Implicit time integration - Bathe method - Potential based fluid - Nonlinear structural dynamics.

Analysis of heat flow in composite structures used in window installation. Stiffness degradation, G/G 0, curves of Champlain clay at St-Adelphe, Quebec, and the associated variation of its damping ratio with shear strain are constructed in this study using the new combined triaxial simple shear (T x SS) apparatus.

The apparatus offers the ability to obtain the stiffness (G/G 0) and damping ratio of soils over a wide strain spectrum from % to 10%.Cited by: 2. Drashevska, McGraw-Hill Book Co. 1 Inc., New York/ New York, This book is divided into three parts, namely (1) elastic and vibratory properties of soils, (2) the theory and design of foundation under dynamic loads, and (3} propagation of elastic waves in soiL 4.

Bendel, 1., 11 The Dynamic Triaxial Trials, 11 Proc. 2nd ICSMFE, VoL 3. the damping material of the transducer assembly, which reduces the number of cycles produced in a pulse the amplitude of the resultant wave is smaller than either of the original waves.

Divergence. caused by two materials rubbing against each other, thereby converting energy to heat. Hemodynamically Significant Stenosis. Damping effect on wave propagation through the fresh concrete In fresh concrete, the amplitude of the vibrator head is reduced by the resistance of the concrete to the movement.

According to hydrodynamic theories, the effect of a sur- rounding fluid on a vibrating body may be represented by the addition of a mass to the body. The effect of particle size on modulating turbulent intensity.

The effect of the variation of surface tension with temperature on the motion of bubbles and drops. The effects of an impact velocity dependent coefficient of restitution on stresses developed by sheared granular materials.

().Author: Christopher Earls Brennen. The existing database for damping ratios of various saturated soils shows that the damping values at the strain amplitude of 10 − 4, which is approximately the upper threshold strain for elastic wave propagation and beyond which the plastic deformation occurs, typically vary between and (Vucetic and Dobry ; Ishihara ).

Luna, R. and H. Jadi, "Determination of Dynamic Soil Properties Using Geophysical Methods," Proceedings of the First International Conference on the Application of Geophysical and NDT Methodologies to Transportation Facilities and Infrastructure, St.

Louis, MO, December 3 t g G max G sec g c G G max G sec G max g c Log g Range of File Size: 88KB. The large range of applications of acoustical methods and techniques in modern society demands a thorough exploration of the nonlinear properties of sound wave propagation in different media and environments, and of the effects caused by nonlinear interaction of sound and medium.

Lucas Illing, Ph.D.: Associate Professor Curriculum Vitae; E-Mail: illing {at} Inafter the wall came down and I could finally visit my relatives in the "West", my uncle gave me a copy of J.

Gleick's book, Chaos: Making a New since, I have been interested in and studied the complex behavior of nonlinear dynamical systems. V. M. Kenkre: Spatial Memories and Correlations in the Theory of Stress Distribution in Granular Materials, Granular Matter 3, ().

PDF; R. Monetti, A. J. Hurd, V. M. Kenkre: Simulations for Dynamics of Granular Mixtures in a Rotating .coupling in granular material was studied in the context of stochastic resonance phenomena. Single mineral interface and soils were tested. ATTENUATION AND DAMPING MEASUREMENTS IN THE FIELD AND LAB Field-related studies included theoretical studies and modeling of seismic surface wave fields and estimation algorithms, field testing with.E arthquake research focuses on two primary problems.

Basic earthquake science seeks to understand how earthquake complexity arises from the brittle response of the lithosphere to forces generated within the Earth’s interior. Applied earthquake science seeks to predict seismic hazards by forecasting earthquakes and their site-specific effects.