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Journal articles on the topic 'Impact's elastic wave'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Vitalii, Kovalchuk, Kravets Ivan, Nabochenko Olga, et al. "Devising a procedure for assessing the subgrade compaction degree based on the propagation rate of elastic waves." Eastern-European Journal of Enterprise Technologies 1, no. 5(109) (2021): 6–15. https://doi.org/10.15587/1729-4061.2021.225520.

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This paper reports the analysis of the methods for estimating the technical condition of the subgrade underneath a constructed railroad track or road during its operation. The study results have proven that the issue related to monitoring and controlling high-quality compaction of a heterogeneous subgrade remains relevant and requires the construction of reliable experimental methods for assessing the subgrade degree of compaction. A procedure for determining the compaction of subgrade in the laboratory has been devised, based on inertial microcomputer technologies, which makes it possible to

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2

Kovalchuk, Vitalii, Ivan Kravets, Olga Nabochenko, et al. "Devising a procedure for assessing the subgrade compaction degree based on the propagation rate of elastic waves." Eastern-European Journal of Enterprise Technologies 1, no. 5 (109) (2021): 6–15. http://dx.doi.org/10.15587/1729-4061.2021.225520.

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This paper reports the analysis of the methods for estimating the technical condition of the subgrade underneath a constructed railroad track or road during its operation. The study results have proven that the issue related to monitoring and controlling high-quality compaction of a heterogeneous subgrade remains relevant and requires the construction of reliable experimental methods for assessing the subgrade degree of compaction. A procedure for determining the compaction of subgrade in the laboratory has been devised, based on inertial microcomputer technologies, which makes it possible to

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3

LIU, ZHANFANG, XIAOYONG SUN, and YUAN GUO. "ON ELASTIC STRESS WAVES IN AN IMPACTED PLATE." International Journal of Applied Mechanics 06, no. 04 (2014): 1450047. http://dx.doi.org/10.1142/s1758825114500471.

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Elastic stress wave theory is developed and the stress waves in the impacted plate are examined in the paper. Generalized linear elasticity is adopted where the couple stress and curvature tensor are both deviatoric tensors and they meet a linear constitutive relation. It is found that there exist volumetric, rotational, and deviatoric waves in the generalized elastic solids. However, for macro-scale elastic solids only two wave modes, namely a volumetric wave and a deviatoric wave should be taken into account. Wave motion in plate impact tests is studied that a volumetric wave and a deviatori

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4

Vermorel, Romain, Nicolas Vandenberghe, and Emmanuel Villermaux. "Impacts on thin elastic sheets." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 465, no. 2103 (2008): 823–42. http://dx.doi.org/10.1098/rspa.2008.0297.

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We study transverse impacts of rigid objects on a free elastic membrane, using thin circular sheets of natural rubber as experimental models. After impact, two distinct axisymmetric waves propagate in and on the sheet. First, a tensile wave travels at sound speed leaving behind the wavefront a stretched domain and then a transverse wave propagates on the stretched area at a lower speed. In the stretched area, geometrical confinement induces compressive circumferential stresses leading to a buckling instability, giving rise to radial wrinkles. We report on a set of experiments and theoretical r

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Hu, Zhengyu, and Yuzhu Li. "EXPERIMENTAL STUDY OF THE BREAKING WAVE IMPACT ON RIGID AND ELASTIC PLATES." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 11. https://doi.org/10.9753/icce.v38.structures.11.

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Coastal and offshore deformable structures such as flexible breakwaters, wave energy converters, and Floating Production Storage and Offloading (FPSO) hulls are vulnerable to ocean hydrodynamic loads, as structural deformation may happen in these interactions. The structural deformation can lead to decreased wave reflection, wave loading, and runup on the steep-fronted coastal structures in non-breaking waves (Hu et al., 2023; Hu and Li, 2023a). When flexible structures face breaking waves, their structural integrity is challenged. Tremendous impact pressure with a short duration can be produc

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Mubaraki, Ali M., Rahmatullah Ibrahim Nuruddeen, Rab Nawaz, and Tayyab Nawaz. "Modeling the Dispersion of Waves in a Multilayered Inhomogeneous Membrane with Fractional-Order Infusion." Fractal and Fractional 8, no. 8 (2024): 445. http://dx.doi.org/10.3390/fractalfract8080445.

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The dispersion of elastic shear waves in multilayered bodies is a topic of extensive research due to its significance in contemporary science and engineering. Anti-plane shear motion, a two-dimensional mathematical model in solid mechanics, effectively captures shear wave propagation in elastic bodies with relative mathematical simplicity. This study models the vibration of elastic waves in a multilayered inhomogeneous circular membrane using the Helmholtz equation with fractional-order infusion, effectively leveraging the anti-plane shear motion equation to avoid the computational complexity

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7

Duchemin, L., and N. Vandenberghe. "Impact dynamics for a floating elastic membrane." Journal of Fluid Mechanics 756 (September 3, 2014): 544–54. http://dx.doi.org/10.1017/jfm.2014.471.

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AbstractWe study impacts of a rigid body on a thin elastic sheet floating on a liquid. When struck by a solid object of small size, the elastic sheet deforms and waves propagate in and on the membrane. The impact triggers a longitudinal elastic wave effectively stretching the membrane. The hydroelastic transverse wave that propagates in the stretched domain is similar to capillary waves on a free surface with an equivalent ‘surface tension’ that results from the stretching of the elastic membrane. Two limiting cases, for which a self-similar solution can be computed, corresponding to short and

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8

Asif, Muhammad, Rab Nawaz, and Rahmatullah Ibrahim Nuruddeen. "Dispersion of elastic waves in an inhomogenous multilayered plate over a Winkler elastic foundation with imperfect interfacial conditions." Physica Scripta 96, no. 12 (2021): 125026. http://dx.doi.org/10.1088/1402-4896/ac36a1.

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Abstract This study examines the dispersion of elastic waves in a strongly inhomogeneous three-layered plate resting on a Winkler elastic foundation in the presence of imperfect interfacial conditions alongside a stress-free upper face. The propagation of elastic waves in the plate is governed by the two-dimensional anti-plane shear motion. The asymptotic technique is employed for the analysis. The exact dispersion relation and the overall cut-off frequency are determined. Within the long-wave low-frequency region, the shortened polynomial dispersion relation corresponding to the exact dispers

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9

Wang, Ping, Yongyan Wang, Chuanqi Su, and Yanzhao Yang. "Nonlinear Hydroelastic Waves Generated due to a Floating Elastic Plate in a Current." Advances in Mathematical Physics 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/2837603.

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Effects of underlying uniform current on the nonlinear hydroelastic waves generated due to an infinite floating plate are studied analytically, under the hypotheses that the fluid is homogeneous, incompressible, and inviscid. For the case of irrotational motion, the Laplace equation is the governing equation, with the boundary conditions expressing a balance among the hydrodynamics, the uniform current, and elastic force. It is found that the convergent series solutions, obtained by the homotopy analysis method (HAM), consist of the nonlinear hydroelastic wave profile and the velocity potentia

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10

IWANO, Satoshi, and Kazumasa MORIHAMA. "OS11F015 Estimation of Compressive Strength of Concrete Structures by the Impact Elastic Wave Method." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS11F015——_OS11F015—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os11f015-.

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11

Li, Xin Gang, Zhen Qing Wang, and Nian Chun Lü. "Fracture Dynamics of a Mode III Moving Crack Impacted by Elastic Wave in Functionally Graded Materials." Advanced Materials Research 105-106 (April 2010): 683–86. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.683.

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The dynamic stress field under the SH-waves at the moving crack tip of functionally graded materials is analyzed, and the influences of parameters such as graded parameter, crack velocity, the angle of the incidence and the number of the waves on dynamic stress intensity factor are also studied. Due to the same time factor of scattering wave and incident wave, the scattering model of the crack tip can be constructed by making use of the displacement function of harmonic load in the infinite plane. The dual integral equation of moving crack problem subjected to SH-waves is obtained through Four

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12

Kosykh, VP. "Change in the elastic and rheological properties of structurally heterogeneous geomaterials under multiple weak impacts." IOP Conference Series: Earth and Environmental Science 991, no. 1 (2022): 012043. http://dx.doi.org/10.1088/1755-1315/991/1/012043.

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Abstract The paper discusses the lab-scale studies of the effect exerted by multiple weak impacts on creep in a sample of an equivalent geomaterial additionally subjected to static compression. It is found that under weak impacts for a long time, the creep strain rate first grows and then lowers down to a stationary value. Weak impacts initiate P-waves in the sample. The P-wave velocity increases non-monotonously with growing number of impacts. The change in the elastic and rheological properties of the material is connected with the change in its internal structure under the influence of exte

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13

Shang, Xiaoji, Zhizhen Zhang, Weihao Yang, J. G. Wang, and Cheng Zhai. "Fractal Analysis for Wave Propagation in Combustion–Explosion Fracturing Shale Reservoir." Fractal and Fractional 6, no. 11 (2022): 632. http://dx.doi.org/10.3390/fractalfract6110632.

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The in-situ combustion–explosion fracturing technology in shale reservoirs can promote continuous fracture expansion with a radial detonation wave first converging into a shock wave and then decaying into an elastic wave. The transformation scale of the shale reservoir is determined by the range of wave propagation during combustion–explosion. As wave propagation paths are usually tortuous and fractal, the previous integer wave models are not competent to describe the wave propagation and estimate the impact range of the combustion–explosion fracturing process. This study develops two fraction

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14

Hu, Bin, Werner Schiehlen, and Peter Eberhard. "Comparison of Analytical and Experimental Results for Longitudinal Impacts on Elastic Rods." Journal of Vibration and Control 9, no. 1-2 (2003): 157–74. http://dx.doi.org/10.1177/107754603030745.

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In this paper, the dynamic problem of a rigid body colliding with an elastic rod is studied in some detail. Different contact theories for modeling impact responses are compared with experimental measurements. Based on an idea originally presented by Sears for collisions of two rods with rounded ends, a boundary approach combining Hertzian contact law and St. Venant's elastodynamics is developed to describe longitudinal waves in rods. It is shown that this boundary approach agrees very well with experimental results. For the simulation of long-term dynamic behavior after impact, a traditional

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15

IWANO, Satoshi, and Kazumasa MORIHAMA. "OS11-1-1 Estimation of Compressive Strength of Concrete Structures by the Impact Elastic Wave Method." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS11–1–1—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os11-1-1-.

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16

Hazaveie, Seyed M., Babak Aminshahidy, and Mohammad Nikbin. "A Review of the Intrinsic Parameters Affecting the Elastic Characteristics of Heterogeneous Carbonate Reservoirs: Insights from Laboratory Assessments." International Journal of Petroleum Technology 11 (December 18, 2024): 40–55. https://doi.org/10.15377/2409-787x.2024.11.4.

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This research provides an in-depth analysis of how various parameters such as mineralogy, density, porosity, temperature, pressure, and structural features impact the velocities of sonic waves in carbonate rocks. Our findings reveal that the mineral composition significantly influences the elastic behavior of these rocks. The density and elastic properties of minerals, especially clay minerals, play a crucial role in affecting porosity and predominant pore types. The porosity of carbonate reservoirs impacts their elastic properties, leading to variations in sonic wave velocities depending on t

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17

Gaygusuzoglu, Guler, Metin Aydogdu, and Ufuk Gul. "Nonlinear Wave Modulation in Nanorods Using Nonlocal Elasticity Theory." International Journal of Nonlinear Sciences and Numerical Simulation 19, no. 7-8 (2018): 709–19. http://dx.doi.org/10.1515/ijnsns-2017-0225.

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AbstractIn this study, nonlinear wave modulation in nanorods is examined on the basis of nonlocal elasticity theory. Eringen's nonlocal elasticity theory is employed to derive nonlinear equations for the motion of nanorods. The analysis of the modulation of axial waves in nonlocal elastic media is performed, and the reductive perturbation method is used for the solution of the nonlinear equations. The propagation of weakly nonlinear and strongly dispersive waves is investigated, and the nonlinear Schrödinger (NLS) equation is acquired as an evolution equation. For the purpose of a numerical in

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18

Bayones, Fatimah Salem, Nahed Sayed Hussein, Abdelmooty Mohamed Abd-Alla, and Amnah Mohamed Alharbi. "The influence of heterogeneity and initial stress on the propagation of Love-type wave in a transversely isotropic layer subjected to rotation." Science Progress 104, no. 3 (2021): 003685042110414. http://dx.doi.org/10.1177/00368504211041496.

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Introduction: In this paper, a mathematical model of Love-type wave propagation in a heterogeneous transversely isotropic elastic layer subjected to initial stress and rotation of the resting on a rigid foundation. Frequency equation of Love-type wave is obtained in closed form. The material constants and initial stress have been taken as space dependent and arbitrary functions of depth in the respective media. Objectives: The dispersion equation is determined to study the effect of different types of parameters such as inhomogeneity, initial stress, rotation, wave number, the phase velocity o

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19

Zhang, Sheng, Xiang Hao Yang, and Xin Wen Li. "Numerical Simulation Analysis of the Effect on the One-Dimension Assumption in Different Diameter SHPB Pressure Bar by Two Kinds of Loading Waveform." Advanced Materials Research 787 (September 2013): 759–64. http://dx.doi.org/10.4028/www.scientific.net/amr.787.759.

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t is one of precondition of determining rock material dynamic parameters for one-dimension assumption of the elastic pressure bar. In order to analyze its effect by loading wave type, the dynamic stress was simulated with Ls-dynamic finite element software, when SHPB(Split Hopkinson Pressure Bar) pressure bar with diameter of 50 mm, 75 mm and 100 mm were impacted respectively by a cycle rectangular loading wave and half sine loading wave. The stress waves of cross section in different diameter pressure bar and the different distance with pressure bar end were compared and analyzed. The results

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20

Lv, Xiao Lang, and Dian Kui Liu. "Dynamic Analysis for a Subsurface Elastic Cylindrical Inclusion with a Semi- Cylindrical Hill Impacted by SH-Wave." Advanced Materials Research 199-200 (February 2011): 945–48. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.945.

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An analytic method is developed for dynamic stress concentration of a subsurface elastic cylindrical inclusion below a semi-cylindrical hill under SH-wave. And the dynamic stress concentration factor (DSCF) is given by complex variable function. During the solution, a standing wave and scattered wave displacement functions are constructed in different parts respectively. All of these displacement functions should satisfy the boundary conditions of each part. Employed to the boundary conditions around the elastic cylindrical inclusion, a series of infinite algebraic equations about the problem

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21

Tran-Duc, Thien, Michael H. Meylan, and Ngamta Thamwattana. "Smoothed particle hydrodynamics simulations for wave induced ice floe melting." Physics of Fluids 35, no. 4 (2023): 046604. http://dx.doi.org/10.1063/5.0138858.

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In this paper, ice melting under the impacts of water waves was studied numerically via smoothed particle hydrodynamics simulations. Effects due to the ice elasticity were also included. Accordingly, the melting of an ice plate, modeled as an elastic object and interacting with transitional water waves with wave height and wave steepness up to 0.32 m and 0.093, respectively, was simulated and analyzed. The simulations showed that water waves' effects on the ice melting are seen via overflow over the top surface and local fluid circulations in the submerged region due to water–ice interactions

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22

Huang, Shou-Jun, Hui-Hui Dai, Zhen Chen, and De-Xing Kong. "Mathematical theory and analytical solutions for the wave catching-up phenomena in a nonlinearly elastic composite bar." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2148 (2012): 3882–901. http://dx.doi.org/10.1098/rspa.2012.0292.

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Cracking induced by tensile wave at the free surface of an impacted target is an important issue in impact-resistant design. Here, we explore the use of material nonlinearity to undermine the strength of the tensile wave. More specifically, we consider waves in a two-material composite bar subjected to impact loading at one end. Multiple reflections cause a tensile wave being transmitted into the second material. The attention is on analytically and numerically studying the phenomenon that the tensile wave catches the first transmitted compressive wave. It turns out that, depending on the inte

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23

Duchesne, Mathieu J., André J. M. Pugin, Gabriel Fabien-Ouellet, and Mathieu Sauvageau. "Detection of near-surface hydrocarbon seeps using P- and S-wave reflections." Interpretation 4, no. 3 (2016): SH21—SH37. http://dx.doi.org/10.1190/int-2015-0175.1.

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The combined use of P- and S-wave seismic reflection data is appealing for providing insights into active petroleum systems because P-waves are sensitive to fluids and S-waves are not. The method presented herein relies on the simultaneous acquisition of P- and S-wave data using a vibratory source operated in the inline horizontal mode. The combined analysis of P- and S-wave reflections is tested on two potential hydrocarbon seeps located in a prospective area of the St. Lawrence Lowlands in Eastern Canada. For both sites, P-wave data indicate local changes in the reflection amplitude and slow

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Qi, Qiyuan, Wensha Huang, Donghao Zhang, and Liguo Han. "Robust Elastic Full-Waveform Inversion Based on Normalized Cross-Correlation Source Wavelet Inversion." Applied Sciences 13, no. 24 (2023): 13014. http://dx.doi.org/10.3390/app132413014.

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The elastic full-waveform inversion (EFWI) method efficiently utilizes the amplitude, phase, and travel time information present in multi-component seismic recordings to create detailed parameter models of subsurface structures. Within full-waveform inversion (FWI), accurate source wavelet estimation significantly impacts both the convergence and final result quality. The source wavelet, serving as the initial condition for the wave equation’s forward modeling algorithm, directly influences the matching degree between observed and synthetic data. This study introduces a novel method for estima

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Sewify, Gamal Hassan, Khurram Javid, Muhammad Adeel, et al. "Blood Flow in Multi-Sinusoidal Curved Passages with Biomimetic Rheology: An Application of Blood Pumping." Mathematics 10, no. 9 (2022): 1579. http://dx.doi.org/10.3390/math10091579.

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The unsteady flow of biological liquid through non-uniform pumps under porosity impacts is considered. The Jeffrey fluid is used as blood in the current study, which is also characterized as viscoelastic fluid because of its dual characteristics: on the one hand, its viscosity in nature; on the other hand, its elastic effect. Rheological equations are framed in a curvilinear coordinates system, and porosity influences are simulated with the body force term in momentum equations. The flow system has been transformed from fixed to wave frame using a linear–mathematical transformation between the

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26

Li, Hong Liang. "Far Field Solution of Circular Inclusion and Linear Crack by SH-Wave." Key Engineering Materials 462-463 (January 2011): 455–60. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.455.

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Circular inclusion exists widely in natural media, engineering materials and structures, and defects are usually found around the inclusion. When a composite material with circular inclusion and cracks is impacted by the dynamic load, on the one hand, the scattering field produced by the circular inclusion and cracks determines the dynamic stress concentration factor around the circular inclusion, and therefore determines whether the material is damaged or not; on the other hand, the scattering field also presents many characteristic parameters of the inclusion and cracks such as defect compos

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27

Altowairqi, Yazeed, Reza Rezaee, Milovan Urosevic, and Claudio Delle Piane. "Measuring ultrasonic characterisation to determine the impact of TOC and the stress field on shale gas anisotropy." APPEA Journal 53, no. 1 (2013): 245. http://dx.doi.org/10.1071/aj12021.

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While the majority of natural gas is produced from conventional sources, there is significant growth from unconventional sources, including shale-gas reservoirs. To produce gas economically, candidate shale typically requires a range of characteristics, including a relatively high total organic carbon (TOC) content, and it must be gas mature. Mechanical and dynamic elastic properties are also important shale characteristics that are not well understood as there have been a limited number of investigations of well-preserved samples. In this study, the elastic properties of shale samples are det

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Dibiase, Marco, Masoud Mohammadgholiha, and Luca De Marchi. "Optimal Array Design and Directive Sensors for Guided Waves DoA Estimation." Sensors 22, no. 3 (2022): 780. http://dx.doi.org/10.3390/s22030780.

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The estimation of Direction of Arrival (DoA) of guided ultrasonic waves is an important task in many Structural Health Monitoring (SHM) applications. The aim is to locate sources of elastic waves which can be generated by impacts or defects in the inspected structures. In this paper, the array geometry and the shape of the piezo-sensors are designed to optimize the DoA estimation on a pre-defined angular sector, from acquisitions affected by noise and interference. In the proposed approach, the DoA of a wave generated by a single source is considered as a random variable that is uniformly dist

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Caridis, P. A., and M. Stefanou. "Dynamic Elastic/Viscoplastic Response of Hull Plating Subjected to Hydrodynamic Wave Impact." Journal of Ship Research 41, no. 02 (1997): 130–46. http://dx.doi.org/10.5957/jsr.1997.41.2.130.

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A numerical simulation of the response of a flat plate subjected to hydrodynamic wave impact is presented. The formulation is based on a time domain solution of the large deflection plate equations using a finite difference mesh. The material behavior is elastic/viscoplastic, following the classical Perzyna model, and the procedure is validated against a series of model collision experiments. The correlation results were found to be good and the procedure was subsequently used to predict the response of plating subjected to wave impact loads, characterized by a steep rise to a maximum pressure

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30

LEE, Heung-Soo, Shinya UCHIDA, Toshiki IWASAKI, and Toshiro KAMADA. "OS11F052 Non-Destructive Evaluation for Horizontal Cracks in RC Slabs of Highway Bridges by Impact Response Analysis-Aided Elastic-Wave Methods." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS11F052——_OS11F052—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os11f052-.

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31

Musayev, V. K. "THE WAVE THEORY OF SEISMIC SAFETY IN THE PROBLEM OF DETERMINING THE STRESS STATE IN A SHALLOW-BURIED STRUCTURE." Bulletin of Russian academy of natural sciences 25, no. 1 (2025): 24–33. https://doi.org/10.52531/1682-1696-2025-25-1-24-33.

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This article discusses how digital technologies can be used to simulate non-stationary waves that occur in shallow structures during seismic impacts. A unique methodology, as well as a set of algorithms and calculation programs, was created to study, identify and analyze transient wave phenomena. To determine how reliable and accurate the developed software package is, we solved the problem of how two geometric objects - a triangle and a trapezoid-affect the elastic half-plane. The tasks were solved according to the following scheme: explicit, two-layer. We managed to find a solution to the pr

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32

Ishmamatov, Matlab, Nurillo Kulmuratov, Nasriddin Kuldashov, Mirjalol Choriev, and Nasriddin Axmedov. "Fluctuations of the ground surface at blasting operations on tunnel structures." E3S Web of Conferences 417 (2023): 06004. http://dx.doi.org/10.1051/e3sconf/202341706004.

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The paper considers the fluctuations of the ground surface during blasting operations on tunnel structures. To estimate the vibration levels of the soil surface, under the explosive action inside a cylindrical cavity, we will consider the plane problem of elasticity theory as a first approximation. The main purpose of the work is to determine the stress-strain state of pipelines under the influence of seismic waves. As a result of this impact, longitudinal and transverse waves will propagate in the ground. To solve the problem, the reciprocity theorem is applied, for dynamic problems of elasti

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Liang, Shufeng, Shijun Hou, and Shuaifeng Wu. "Research on the Dynamic Damage Properties and Determination of the Holmquist–Johnson–Cook Model Parameters for Sandstone." Applied Sciences 12, no. 16 (2022): 8366. http://dx.doi.org/10.3390/app12168366.

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During blasting in engineering construction, the surrounding rock becomes unstable and is damaged under the impacts of multiple low-amplitude stress waves. It is of great practical significance to understand the damage evolution characteristics and the attenuation of the mechanical properties of rocks subjected to multiple stress waves. Single impact and repeated impact tests for sandstone were carried out using a split Hopkinson pressure bar (SHPB) loading system. The single impact test results showed that the sandstone materials were strain-rate-dependent, and the dynamic constitutive curve

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Aljuaidan, Aqilah, Mamdouh Elbrolosy, and Adel Elmandouh. "Nonlinear Wave Propagation for a Strain Wave Equation of a Flexible Rod with Finite Deformation." Symmetry 15, no. 3 (2023): 650. http://dx.doi.org/10.3390/sym15030650.

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The present work is attentive to studying the qualitative analysis for a nonlinear strain wave equation describing the finite deformation elastic rod taking into account transverse inertia, and shearing strain. The strain wave equation is rewritten as a dynamic system by applying a particular transformation. The bifurcation of the solutions is examined, and the phase portrait is depicted. Based on the bifurcation constraints, the integration of the first integral of the dynamic system along specified intervals leads to real wave solutions. We prove the strain wave equation has periodic, solita

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Feng, Zhanxia, Zongyu Chang, Zhongqiang Zheng, and Panfeng Wang. "Effects of Connection Type between Surface Vessel and Submersible Propeller on Motion Performance of Wave Glider." Applied Sciences 8, no. 12 (2018): 2467. http://dx.doi.org/10.3390/app8122467.

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Wave Glider is an autonomous surface vehicle that directly uses wave energy to generate forward power and has been widely used in marine survey and observation. Wave Glider is composed of surface vessel, submersible propeller and the connection structure between them. Connection types are thought to be related to the performance of Wave Glider closely. In this paper, the effects of the connection structure between the surface vessel and the submersible propeller on the motion performance of the Wave Glider are studied. Several connection types such as rigid rod, cable, multi-link chain and ela

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Bril, Joanna, and Edward Rydygier. "The use of modelling of impacts exerted by means of transport on the environment for ensuring safety." Scientific Journal of the Military University of Land Forces 188, no. 2 (2018): 162–75. http://dx.doi.org/10.5604/01.3001.0012.2503.

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The article presents the model research on impacts exerted by means of transport on the structures. In modelling the dynamics of transport systems the dynamic properties of the ground forming the foundation soil for tracks or roadways have been taken into account. The ground has been modelled as an elastic half-space. The dynamics of an infinite mass band being in contact with an elastic half-space has been investigated. As part of the research on impacts exerted by means of transport on structures a model of a problem has been examined where an automotive vehicle, representing a concentrated

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Wang, Hui, Xiaochun Yin, Qingming Deng, Bo Yu, Qiming Hao, and Xiaoyun Dong. "Experimental and theoretical analyses of elastic-plastic repeated impacts by considering wave effects." European Journal of Mechanics - A/Solids 65 (September 2017): 212–22. http://dx.doi.org/10.1016/j.euromechsol.2017.04.006.

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Ye, Qing, Huafeng Sun, Zhiqiang Jin, and Bing Wang. "Study on Shear Velocity Profile Inversion Using an Improved High Frequency Constrained Algorithm." Energies 16, no. 1 (2022): 59. http://dx.doi.org/10.3390/en16010059.

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The formation shear-wave (S-wave)’s velocity information around a borehole is of great importance in evaluating borehole stability, reflecting fluid invasion, and selecting perforation positions. Dipole acoustic logging is an effective method for determining a formation S-wave’s velocity radial profile around the borehole. Currently, the formation S-wave’s radial-profile inversion methods are mainly based on the impacts of radial velocity changes of formations outside the borehole on the dispersion characteristics of dipole waveforms, without considering the impacts of an acoustic tool on the

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Qi, H., J. Yang, Y. Shi, and J. Y. Tian. "Dynamic Analysis for Circular Inclusion Near Interfacial Crack Impacted by SH-Wave in Half Space." Journal of Mechanics 28, no. 1 (2012): 143–51. http://dx.doi.org/10.1017/jmech.2012.15.

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ABSTRACTComplex method and Green's function method are used here to investigate the dynamic analysis for circular inclusion near interfacial crack impacted by SH-wave in bi-material half-space. Firstly, the displacement expression of the scattering wave was constructed which satisfied the free boundary conditions, then Green's function could be constructed, which was an essential solution to the displacement field for an elastic right-angle space with a circular inclusion impacted by out-plane harmonic line source loading at vertical surface. Secondly, crack was made out with “crack-division”

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Yang, Zai Lin, Dian Kui Liu, and Xiao Lang Lv. "Dynamics of a Mode III Crack Impacted by Elastic Wave in Half Space with a Removable Rigid Cylindrical Inclusion." Key Engineering Materials 324-325 (November 2006): 679–82. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.679.

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Scattering of SH wave by a crack is studied in elastic half space with a removable rigid cylindrical inclusion by Green’s function, complex function and moving coordinate method. In half space, firstly the scattering wave function of removable rigid cylindrical inclusion is constructed; next a suitable Green’s function is solved for present problem, then using crack-division to make a crack. Thus the solution of problem can be obtained. Numerical examples are provided and discussed.

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Lee, Heung-Soo, Shinya Uchida, Toshiki Iwasaki, and Toshiro Kamada. "OS11-1-3 Non-Destructive Evaluation for Horizontal Cracks in RC Slabs of Highway Bridges by Impact Response Analysis-Aided Elastic-Wave Methods." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS11–1–3—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os11-1-3-.

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Abazid, Mohammad Alakel. "The Nonlocal Strain Gradient Theory for Hygrothermo-Electromagnetic Effects on Buckling, Vibration and Wave Propagation in Piezoelectromagnetic Nanoplates." International Journal of Applied Mechanics 11, no. 07 (2019): 1950067. http://dx.doi.org/10.1142/s1758825119500674.

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A nonlocal strain gradient theory (NSGT) is utilized to investigate the thermal buckling, free vibration and wave propagation in smart piezoelectromagnetic nanoplates in hygrothermal environments embedded in an elastic substrate. The main advantage of the NSGT over other continuum theories is that it contains both nonlocal parameter and material length scale parameter. The elastic substrate is modeled as Pasternak foundation model. According to the NSGT and the sinusoidal two-variable shear deformation plate theory, the governing equations of motion are derived involving the material parameter

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Wang, Yu, Junhui Hao, Bin Liu, Xinkun Suo, and Haijiang Fang. "Molecular dynamics simulations on shock response and plasticity behaviors of semi-coherent {001} Ni/Al laminate composite." Journal of Physics: Conference Series 2891, no. 12 (2024): 122028. https://doi.org/10.1088/1742-6596/2891/12/122028.

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Abstract Molecular dynamics (MD) simulations were used to explore the shock response and plasticity behaviors of a semi-coherent {001} Ni/Al laminate composite premised on interfaces. Firstly, the impedance-matching theory can reasonably explain the impacts that interfaces have on the propagation of shock waves. The findings illustrate that “reflection-unloading” occurs at the Ni-Al interfaces; however, “reflection-loading” occurs at the Al-Ni interfaces. The interfaces have been observed to have discontinuities of shock wave stress, characterized by elastic-plastic properties of heterogeneous

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Qi, Hui, Guang Long Luo, Xiang Nan Pan, and Chun Gao. "A Green Function of Vertical Interfacial Point Source SH Wave Scattering by a Circular Lining in an Elastic Quarter Space." Applied Mechanics and Materials 644-650 (September 2014): 1569–72. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.1569.

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An anti-plane Green function is formulated for steady state solution of a circular lining impacted by a vertical interfacial point source in an elastic quarter space. Series forms of scattering and stationary wave of the circular lining are constructed with Fourier wave function expansion method. Basic solution of the anti-plane point source is employed to represent displacement fields of incident wave. Stress-free conditions on the quarter bounds are satisfied by using image method. Displacement and stress continuity conditions of the lining are expanded as Fourier series to determine definit

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Pyr’yev, Yuriy, Marek Pawlikowski, Rafał Drobnicki, and Andrzej Penkul. "Research of Dynamic Processes in a Layer During Collision With an Impactor." Acta Mechanica et Automatica 18, no. 4 (2024): 585–92. http://dx.doi.org/10.2478/ama-2024-0062.

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Abstract The article concerns the modeling of the transverse impact of an impactor (test sample) on the surface of an infinite elastic layer. The Laplace transform with respect to time and the Hankel transform with respect to the radius for the axisymmetric case were applied. The propagation of elastic waves in the layer and local deformations in the contact zone are taken into account. Impact force, impact time and the coefficient of restitution were examined. The results are compared with the elastic half-space. The calculations carried out showed that for layer thicknesses of more than five

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Singh, Dilbag, Mourad Bentahar, Charfeddine Mechri, and Rachid El Guerjouma. "3D Modelling of the Scattering of the Fundamental Anti-Symmetric Lamb Mode (A0) Propagating within a Point-Impacted Transverse-Isotropic Composite Plate." Applied Sciences 11, no. 16 (2021): 7276. http://dx.doi.org/10.3390/app11167276.

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The present paper deals with an effort to model impact damage in 3D-FE simulation. In this work, we studied the scattering behavior of an incident A0 guided wave mode propagating towards an impacted damaged zone created within a quasi-isotropic composite plate. Besides, barely visible impact damage of the desired energy was created and imaged using ultrasonic bulk waves in order to measure the size of the damage. The 3D-FE frequency domain model is then used to simulate the scattering of an incident guided wave at a frequency below an A1 cut-off with a wavelength comparable to the size of the

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Moravej, Kamal, and Alison Malcolm. "Using laboratory data to understand how pore aspect ratio influences elastic parameters and amplitude variation with offset." GEOPHYSICS 87, no. 2 (2022): T147—T156. http://dx.doi.org/10.1190/geo2020-0454.1.

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Pore geometry is an important parameter in reservoir characterization that affects the permeability of reservoirs and can also be a controlling factor on the impact of pressure and saturation on reservoirs elastic properties. We have used selective laser sintering 3D printing technology to build physical models to experimentally investigate the impacts of pore aspect ratio on compressional (P-) and shear wave (S-wave) velocities and amplitude variation with offset (AVO). We printed six models to study the effects of the pore aspect ratio of prolate and oblate pore structures on elastic propert

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Vinogradov, V. V., Y. A. Bykov, and N. I. Kovalenko. "DETERMINING PARAMETERS OF DYNAMIC IMPACT IN THE PLATE OF BALLASTLESS TRACK." World of Transport and Transportation 14, no. 1 (2016): 38–44. http://dx.doi.org/10.30932/1992-3252-2016-14-1-4.

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[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT A mathematical model of wave surface propagation in the flat element, which is a carrier plate of ballastless track under dynamic action of wheel set, is demonstrated. An algorithm of accounting different rheological properties of interacting bodies, based on the analytical method of representation of unknown quantities in the form of expansions in terms of spatial coordinates and time, initial and boundary conditions, is offered. The method of constructin

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Bazhenov, V. G., and N. S. Dyukina. "IMPROVING THE EFFICIENCY OF NUMERICAL SIMULATION OF SEISMIC VIBRATIONS OF BURIED STRUCTURES, TAKING INTO ACCOUNT THE INTERACTION WITH THE GROUND BASE." Problems of Strength and Plasticity 84, no. 4 (2023): 470–80. http://dx.doi.org/10.32326/1814-9146-2023-85-4-470-480.

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The calculation of buried large-sized structures for specified seismic impacts should take into account the field of gravity, contact interaction with the ground. The representation of the boundless half-space of the soil by a limited finite element domain requires taking measures to exclude the influence of boundary effects on the solution. The article proposes and analyzes a set of measures to eliminate edge effects: an algorithm for restoring kinematic load according to an experimental seismogram, the use of superimposed grids to separate the waves incident and radiated from the structure,

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Zhang, Rui, and Hong Liang Li. "Scattering of Anti-Plane SH-Wave by Multiple Cylindrical Cavities in Elastic Semi-Space." Advanced Materials Research 317-319 (August 2011): 2497–500. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2497.

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In natural medium, engineering materials and structures, it can be found that there are cavities everywhere. When structure is impacted by dynamic load, the scattering field will be produced because of the cavities, and it could cause dynamic stress concentration at the edge of the cavities. In this paper, the solution of displacement field for elastic semi-space with multiple cylindrical cavities by anti-plane SH-wave is constructed. In complex plane, considering the symmetry of SH-wave scattering, the displacement field aroused by the anti-plane SH-wave and the scattering displacement field

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