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Journal articles on the topic 'Stress wave analysis'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Peng, Yan, Yang Liu, and Wei Zhang. "Analysis of Dynamic Response Behavior of Crack under Impact Stress Wave." Metals 11, no. 12 (2021): 1920. http://dx.doi.org/10.3390/met11121920.

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The structural parts of construction machinery mostly fail due to impact load, but current research on the failure behavior of the impact load has not established a complete theoretical system. Based on wave theory and fracture mechanics, this paper analyzed the wave behavior of shock stress waves and established a model of shock stress wave propagation. Given the dynamic response behavior of the stress and strain field at the crack tip, dynamic fracture mechanics theory was used to solve the dynamic fracture strength stress factor and evaluate the dynamic fracture performance of the structure

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2

Adams, Daniel O’Hare, and Michael W. Hyer. "Analysis of Layer Waviness in Flat Compression-Loaded Thermoplastic Composite Laminates." Journal of Engineering Materials and Technology 118, no. 1 (1996): 63–70. http://dx.doi.org/10.1115/1.2805935.

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A finite element analysis was used to investigate layer waviness effects in flat compression-loaded composite laminates. Stress distributions in the vicinity of the layer waves as well as the locations and modes of failure were investigated. Two layer wave geometries were considered, each modeled within an otherwise wave-free thermoplastic composite laminate. These two wave geometries, classified as moderate and severe, corresponded to layer waves fabricated in actual laminates and tested under uniaxial compression loading. Material nonlinearities obtained from intralaminar shear and 0 and 90

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3

Fan, Xiao Chao, Rui Jing Shi, Feng Ting Li, Bo Wei, and Yue Dang. "Mechanical Stress Analysis of Different Shapes Pillars with Cnoidal Internal Wave Action." Advanced Materials Research 732-733 (August 2013): 417–20. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.417.

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The numerical simulations of the flow around different pillars acted by the cnoidal internal waves have been made by building numerical wave flume based on FLUENT software. The cnoidal internal wave was created by using the push-pedal method, and the free surface was tracked by using VOF (volume of fluid) method. The three-dimensional different amplitude and period cnoidal internal waves were simulated. The inertia force and viscous force trends were analyzed, and for different pillars the total wave force were compared. There were some significance for stress analysis of the offshore terminal

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4

Yao, Jia, Wei Lu, and Chun Shan Liu. "The Micro-Mechanism of Vibration Cutting Stress Wave and the Analysis of Macro-Processing Effect." Key Engineering Materials 407-408 (February 2009): 632–35. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.632.

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The specification of the vibration cutting loading is a decision factor for the generation of stress wave and the stress wave propagation has a significant impact on its micro-mechanism. Making the stress waves’ generation in the cutting area of vibration cutting for entry point, the analysis of internal inflection wave, inflection fracture and dynamic stress intensity factor has been carried out, the simulation of vibration cutting has also been done by finite element method, the essential of energy concentrated role, shear angle increment and cutting quality improvement has been explained.

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5

Li, Zuohua, Jingbo He, Jun Teng, Qin Huang, and Ying Wang. "Absolute stress measurement of structural steel members with ultrasonic shear-wave spectral analysis method." Structural Health Monitoring 18, no. 1 (2017): 216–31. http://dx.doi.org/10.1177/1475921717746952.

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Absolute stress in structural steel members is an important parameter for the design, construction, and servicing of steel structures. However, it is difficult to measure via traditional approaches to structural health monitoring. The ultrasonic time-of-flight method has been widely studied for monitoring absolute stress by measuring the change in ultrasonic propagation time induced by stress. The time-of-flight of the two separated shear-wave modes induced by birefringence, which is particular to shear waves, is also affected by stress to different degrees. Their synthesis signal amplitude sp

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6

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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7

Khairunnisa, Priyambodo Nur Ardi Nugroho, and Kharis Abdullah. "Stress Analysis of 91.5 Metre Coal Carrier Pontoon with Variations of Frame Distance." WAVE: Jurnal Ilmiah Teknologi Maritim 17, no. 1 (2023): 07–15. http://dx.doi.org/10.55981/wave.2023.223.

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The scarcity of materials due to the impact of the pandemic has caused the price of shipbuilding materials is increased and the production costs to become more expensive. So, optimization steps need to be taken to reduce production costs but still ensure the quality of the coal carrier pontoons. One of the optimization steps that can be done is by changing the frame distance. In this study, two variations of the frame distance, 600 and 650 mm, will be carried out to obtain the optimal value from the initial design of 610 mm. In the numerical calculation, each construction model will be analyze

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8

Leishear, Robert A. "Dynamic Pipe Stresses During Water Hammer: A Finite Element Approach." Journal of Pressure Vessel Technology 129, no. 2 (2007): 226–33. http://dx.doi.org/10.1115/1.2716420.

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Water hammer is defined as a sudden increase in pipe pressure, which results in pressure waves that travel along the pipe at sonic velocities. In the wake of the pressure wave, dynamic stresses are created in the pipe wall, which contribute to pipe failures. A finite element analysis computer program was used to determine the three-dimensional dynamic stresses that result from pipe wall vibration at a distance from the end of a pipe, during a water-hammer event. The analysis was used to model a moving shock wave in a pipe, using a step pressure wave. Both aluminum and steel were modeled for an

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9

Jahed, M., and S. J. Lai-Fook. "Stress wave velocity measured in intact pig lungs with cross-spectral analysis." Journal of Applied Physiology 76, no. 2 (1994): 565–71. http://dx.doi.org/10.1152/jappl.1994.76.2.565.

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In anesthetized pigs (25–40 kg), we generated stress waves in the lung by rapid deflation of an esophageal balloon. The source distortion was measured by an accelerometer (1 g wt) bonded to the balloon. Stress waves were detected by three accelerometers bonded to intercostal muscle and to the skin near midchest. The distance between the source and chest receivers were measured radiographically. Cross-spectral analysis was used to calculate transit times. We measured stress wave velocities at airway pressures of 0 (functional residual capacity) and 25 cmH2O. Transpulmonary pressure (Ptp) was me

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10

Wang, Ru Heng, Hua Chuan Yao, Bin Jia, and Lin Wang. "Numerical Simulation of SHPB Experiment and Analysis on Stress Wave." Applied Mechanics and Materials 94-96 (September 2011): 397–401. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.397.

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Concrete is a typical kind of rate sensitive material. In this paper, the concrete specimens were tested in the SHPB experiment system. Based on H-J-C constitutive model, the SHPB experiment was simulated by LS-DANY. The stress-strain curves which were gat from numerical simulation in the LS-DANY were compared with the stress-strain curves which were gat from SHPB. The results showed that the H-J-C constitutive could simulate the dynamic characteristics of concrete both under room temperature. The result also showed that the concrete was strain rate sensitive. Based on the numerical simulation

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11

Yao, Jia, Wan Jiang Wu, Ya Qin Li, Ming Hui Han, and Li Wei Jiang. "Stress Wave Propagation Discipline and Simulation Analysis in Non-Homogeneous Laminated Composites." Advanced Materials Research 211-212 (February 2011): 823–26. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.823.

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Application of stress wave testing methods can realize non-destructive testing of composites, but non-homogeneous characteristics of composites determine the complexity of stress wave propagation. Using the stress wave theory to explain the propagation principle, to describe the stress situation in the composites, which is meaningful to perfect the stress wave testing method. In this paper, stress wave propagation principle of non-homogeneous laminated composites has been revealed, mathematical descriptions of stress wave propagation are also given, and finite element simulation method has bee

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12

Jørgensen, Ole, and Dan Burns. "Novel finite-element approach applied to borehole quadrupole dispersion analysis in stress-sensitive formations." GEOPHYSICS 78, no. 6 (2013): D499—D509. http://dx.doi.org/10.1190/geo2012-0487.1.

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Near a borehole, stress concentration effects may cause a complex spatial variation of elastic anisotropy. Stress-induced sonic anisotropy results when moduli and velocities are stress dependent and the state of stress is nonhydrostatic. For such cases, the appropriate material model is that of an elastic orthorhombic medium with material axes aligned with the principal axes of stress. We simulate the dispersion characteristics of quadrupole waves propagating along a borehole in a stress-sensitive formation. To include sensitivity to stress in the analysis, we derive a finite-element modeling

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13

Ye, Chong, I. Charles Ume, Yuanlai Zhou, and Vishnu V. B. Reddy. "Inspection of the residual stress on welds using laser ultrasonic supported with finite element analysis." Manufacturing Review 6 (2019): 3. http://dx.doi.org/10.1051/mfreview/2019001.

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Ultrasonic evaluation for residual stress measurement has been an effective method owing to its easy implementation, low cost and intrinsically being nondestructive. The velocity variations of acoustic waves in materials can be related to the stress state in the deformed medium by the acoustoelastic effects. In this study, a laser/EMAT ultrasonic method is proposed to evaluate the surface/subsurface longitudinal residual stress distribution generated by gas metal arc welding (GMAW). The velocity variation ΔV/V of Rayleigh wave, which is a surface wave, will be experimentally measured. Q-Switch

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14

Pieńko, Bartłomiej, and Zbigniew Szcześniak. "Stress wave method in dynamic resistance analysis of an explosion-proof valve." Bulletin of the Military University of Technology 67, no. 4 (2018): 95–112. http://dx.doi.org/10.5604/01.3001.0012.8497.

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The paper presents the concept of a novel stress wave method (SWM) for determining the dynamic reaction of structural elements of an explosion-proof valve. The stress wave method is an original solution to the issue of the dynamic reaction of structural elements and systems. It is particularly recommended in the case of intensive percussive or explosive impacts. The method was developed by the author of works [14, 15]. It reflects the wave nature of stress development. The paper presents the origin, assumptions and the basic dependencies of the method. The characteristics of the method are ill

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15

Cao, Yupeng, Zhimin Wang, Weidong Shi, Guoran Hua, and Ming Qiu. "Formation Mechanism and Weights Analysis of Residual Stress Holes in E690 High-Strength Steel by Laser Shock Peening." Coatings 12, no. 2 (2022): 285. http://dx.doi.org/10.3390/coatings12020285.

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To investigate the surface residual stress hole formation mechanism induced by laser shock peening (LSP) in an E690 high-strength steel sheet and to assign weights to the relevant causes; E690 steel samples were loaded using four laser beams with different power densities. The dynamic strain in thin plate samples was measured using a polyvinylidene fluoride piezoelectric sensor during LSP and the residual stress distributions on thin- and thick-plate samples were studied using an X-ray stress analyzer. The residual stress distribution of the simulated laser shock E690 high-strength steel sheet

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16

Wei, Xiwen, Liping Sun, Hongjv Zhou, Yang Yang, Yifan Wang, and Yang Gao. "Propagation velocity model of stress waves in larch wood (Larix gmelinii) three-dimensional space with different moisture contents." BioResources 15, no. 3 (2020): 6680–95. http://dx.doi.org/10.15376/biores.15.3.6680-6695.

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Based on the effects of stress wave propagation in larch (Larix gmelinii) wood, the propagation mechanism of stress wave was explored, and a theoretical model of the propagation velocity of stress waves in the three-dimensional space of wood was developed. The cross and longitudinal propagation velocities of stress wave were measured in larch wood under different moisture contents (46% to 87%, 56% to 96%, 20% to 62%, and 11% to 30%) in a laboratory setting. The relationships between the propagation velocity of stress waves and the direction angle or chord angle with different moisture contents

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17

Wu, Tianshu, Shuyu Chen, Tareen Sal, and Peng Wu. "Stress Wave Analysis Based Prognostic Health Management." Chinese Journal of Electronics 27, no. 3 (2018): 565–72. http://dx.doi.org/10.1049/cje.2018.02.013.

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18

Debnath, Lokenath, and Pijush Pal Roy. "Propagation of edge waves in a thinly layered laminated medium with stress couples under initial stresses." Journal of Applied Mathematics and Simulation 1, no. 4 (1988): 271–86. http://dx.doi.org/10.1155/s1048953388000206.

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The propagation of edge waves in a thinly layered laminated medium with stress couples under initial stresses is examined. Based upon an approximate representation of a laminated medium by an equivalent anisotropic continuum with average initial and couple stresses, an explicit form of frequency equation is obtained to derive the phase velocity of edge waves. Edge waves exist under certain conditions. The inclusion of couple stresses increases the velocity of wave propagation. For a specific compression, the presence of couple stresses increases the velocity of wave propagation with the increa

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19

Li, Xin, Wei Qian, Liting Cheng, and Lihong Chang. "A coupling model based on grey relational analysis and stepwise discriminant analysis for wood defect area identification by stress wave." BioResources 15, no. 1 (2020): 1171–86. http://dx.doi.org/10.15376/biores.15.1.1171-1186.

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Based on the experimental idea of reverse simulation, a quantitative area of hole was excavated at the sectional center of a wood specimen. The excavation area was 1/32S, 1/16S, 1/8S, 1/4S, and 1/2S (where S represents cross-sectional area of the complete specimen) and stress wave nondestructive testing of six sensors was performed. The stress wave propagation paths were statistically summarized to obtain the stress wave propagation velocity (Va) for two adjacent sensors, the stress wave propagation velocity (Vb) for two separated sensors, and the stress wave propagation velocity (Vc) for two

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20

ZHAO, Chuang, Yongzheng WANG, and Shuangqing SHENG. "Book Review of Theory and Analytical Methods for Stress Wave Propagation in Jointed and Fractured Rock Masses." Bulletin of Chinese Civil Engineering 3, no. 1 (2025): 1–5. https://doi.org/10.48014/bcce.20241108002.

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Stress wave propagation is an important branch in the field of rock mechanics, and the dynamic stability analysis of rock engineering is built upon the research foundation of stress wave propagation theory. As one of the significant disciplinary branches of rock mechanics, stress wave propagation theory is characterized by its typical interdisciplinary nature, playing a leading role in the safe development of urban construction and underground engineering under deep high stress. With the continuous development of the country and society, major national engineering construction facilities are i

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21

Hu, Chunye, Jialing Hao, and Zhen Liu. "Mean Current Profile over Rippled-Beds in the Presence of Non-Breaking Waves and Analysis of Its Influencing Factors." Journal of Marine Science and Engineering 9, no. 9 (2021): 986. http://dx.doi.org/10.3390/jmse9090986.

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Classical eddy viscosity model deviates from the actual mean current profiles, when calculating the mean current profiles over rippled-beds in the presence of non-breaking waves, owing to the neglect of the enhancement of the wave boundary layer thickness by ripples and the wave-induced shear stress (the radiation stress and the wave Reynolds stress). Considering these shortcomings, a semi-empirical one-dimensional vertical (1DV) model is presented in this study. The present model was obtained using the two-dimensional Navier–Stokes equations and eddy viscosity assumptions, which differ from t

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22

Shao, Fei, Jianwei Chen, Xue Bai, Jian Ma, and Shuai Liu. "Surface stress detection of laser ultrasonic based on time-frequency analysis." Journal of Physics: Conference Series 3021, no. 1 (2025): 012001. https://doi.org/10.1088/1742-6596/3021/1/012001.

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Abstract The presence of residual stress can lower the service performance and service life of materials. However, traditional detection methods have limitations in aspects such as equipment dependence and detection dimensions. In response to the above problems, this paper presents a non-destructive detection method for laser ultrasonic surface stress based on time-frequency analysis. A laser ultrasonic detection system was established, and the laser ultrasonic surface wave signals under different stress states were extracted. The short-time Fourier transform (STFT) was introduced to conduct a

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23

Davogustto Cataldo, Oswaldo E., Timothy J. Kwiatkowski, Kurt J. Marfurt, Steven L. Roche, and James W. Thomas. "3D Alford rotation analysis for the Diamond M Field, Midland Basin, Texas." Interpretation 2, no. 2 (2014): SE63—SE75. http://dx.doi.org/10.1190/int-2013-0126.1.

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The 2C by 2C S-wave survey generated significant excitement in the mid-1980s, but then it fell out of favor when S-wave splitting initially attributed to fractures was also found to be associated with an anisotropic stress regime. In general, 2C by 2C data require more expensive acquisition and more processing effort to obtain images comparable to 1C “compressional wave” data acquired with vertical component sources and receivers. Because S-waves are insensitive to fluids, and hence the water table, the effective S-wave weathering zone is greater than that for compressional waves, making stati

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24

PEIRSON, WILLIAM L., and ANDREW W. GARCIA. "On the wind-induced growth of slow water waves of finite steepness." Journal of Fluid Mechanics 608 (July 11, 2008): 243–74. http://dx.doi.org/10.1017/s002211200800205x.

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Determining characteristic growth rates for water waves travelling more slowly than the wind has continued to be a key unresolved problem of air–sea interaction for over half a century. Analysis of previously reported and recently acquired laboratory wave data shows a systematic decline in normalized wave growth with increasing mean wave steepness that has not previously been identified. The normalized growth dynamic range is comparable with previously observed scatter amongst other laboratory data gathered in the slow wave range. Strong normalized growth rates are observed at low wave steepne

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25

NAKAGAWA, Noritoshi, Ryoji KAWAI, and Norio URUSHI. "Analysis of stress wave propagation in an elasto-viscoplastic plate. (The focussing of stress waves)." Transactions of the Japan Society of Mechanical Engineers Series C 52, no. 484 (1986): 3010–18. http://dx.doi.org/10.1299/kikaic.52.3010.

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26

Shawn Smith, Steven, and Ilya Tsvankin. "Modeling and analysis of compaction-induced traveltime shifts for multicomponent seismic data." GEOPHYSICS 77, no. 6 (2012): T221—T237. http://dx.doi.org/10.1190/geo2011-0332.1.

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Modeling of time shifts associated with time-lapse (4D) seismic surveys is helpful in evaluating reservoir depressurization and inverting for subsurface stress. Using coupled geomechanical and full-waveform seismic modeling, we study the influence of compaction-induced stress and strain around a simplified reservoir on compressional (P), shear (S), and mode-converted (PS) waves. We estimate compaction-induced time shifts and analyze their dependence on reflector depth and pressure drop inside the reservoir. Time shifts between synthetic baseline and monitor surveys are obtained by processing t

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27

Katavoutas, George, and Dimitra Founda. "Response of Urban Heat Stress to Heat Waves in Athens (1960–2017)." Atmosphere 10, no. 9 (2019): 483. http://dx.doi.org/10.3390/atmos10090483.

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The increasing frequency, intensity and duration of heat waves seem to follow the observed global warming in recent decades. Vulnerability to heat waves is expected to increase in urban environments mainly due to population density and the effect of the urban heat island that make cities hotter than surrounding non-urban areas. The present study focuses on a vulnerable area of the eastern Mediterranean, already characterized as a ‘hot spot’ with respect to heat-related risk and investigates the change in heat stress levels during heat wave compared to non-heat wave conditions as well as the wa

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28

Musayev, Janat, and Algazy Zhauyt. "Analysis of Disturbing Influence of Traffic Load on Soil Body." Advances in Materials Science and Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/318289.

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Stress waves propagate in soil in case of earthquake and man-made effects (traffic flow, buried explosions, shield-driven pipes and tunnels, etc.). The wave point-sources are those located at the distances equal to more than two waves lengths, which significantly simplifies solving of a problem of these waves’ strength evaluation. Distribution of stress and displacement by the stress waves propagation in elastic medium is a complex pattern. The stress distribution in propagating waves depends on the type and form of source, conditions of the source contact with medium, and properties of medium

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29

Shin, Hyunho, Sanghoon Kim, and Jong-Bong Kim. "Stress Transfer Mechanism of Flange in Split Hopkinson Tension Bar." Applied Sciences 10, no. 21 (2020): 7601. http://dx.doi.org/10.3390/app10217601.

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To reveal the stress transfer mechanism of the flange in a split Hopkinson tension bar, explicit finite element analyses of the impact of the hollow striker on the flange were performed across a range of flange lengths. The tensile stress profiles monitored at the strain gauge position of the incident bar are interpreted on a qualitative basis using three types of stress waves: bar (B) waves, flange (F) waves, and a series of reverberation (Rn) waves. When the flange length (Lf) is long (i.e., Lf > Ls, where Ls is the striker length), the B wave and first reverberation wave (R1) are fully s

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30

Liu, Pei Ge, Ran Zhao, Zong Quan Ying, and Lin Wang Su. "Theoretical Analysis of Non-Destructive Integrity Test in the Pile with Cap Based on Low Strain Reflected Wave Method." Applied Mechanics and Materials 427-429 (September 2013): 1447–51. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.1447.

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This paper analyzes the propagation characteristics of stress wave in the cap-pile system. Based on reflected wave method, the propagation velocity-time curve of stress wave in the defective pile with cap is calculated theoretically. Then the calculation result shows that the waveform curve by theoretical analysis is consistent with the defect location and pile position, and the waveform curve well reflects the propagation characteristics of waves in the pipe with cap. Finally the theoretical analysis method is used to assist the field testing, and compared with the test result to describe the

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31

Zhou, Xiaojie, Qinghua Liang, Zhongxian Liu, and Ying He. "IBIEM Analysis of Dynamic Response of a Shallowly Buried Lined Tunnel Based on Viscous-Slip Interface Model." Advances in Civil Engineering 2019 (March 6, 2019): 1–14. http://dx.doi.org/10.1155/2019/1025483.

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A viscous-slip interface model is proposed to simulate the contact state between a tunnel lining structure and the surrounding rock. The boundary integral equation method is adopted to solve the scattering of the plane SV wave by a tunnel lining in an elastic half-space. We place special emphasis on the dynamic stress concentration of the lining and the amplification effect on the surface displacement near the tunnel. Scattered waves in the lining and half-space are constructed using the fictitious wave sources close to the lining surfaces based on Green’s functions of cylindrical expansion an

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32

Huang, Shaoqin, Lifeng Luan, Wanli Xing, and Qunyi Liu. "Instantaneous Rock Blasting Wave and Its Microscopic Characteristics during Interaction with Concrete." Shock and Vibration 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/318286.

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This paper uses improved technology for dynamic strain measurement to investigate the dynamic strain signals of blasting wave action tested in the range of 8–16 cm from the central blast. Based on the blasting mechanism and on the analysis of signal characteristics, blasting waves are recognized and divided into three zones, namely, shock wave zone, stress wave zone, and gas-expanding zone. This paper studies the relationships between stress, strain, and time of every zone. The tensile and compressive stresses of stress wave are considered. After the blasting test, four cracks from the borehol

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Doering, J. C., and A. J. Bowen. "SHOALING SURFACE GRAVITY WAVES: A BISPECTRAL ANALYSIS." Coastal Engineering Proceedings 1, no. 20 (1986): 12. http://dx.doi.org/10.9753/icce.v20.12.

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Nonlinearities (wave-wave interactions) play a vital role in many aspects of nearshore dynamics, such as wave shoaling and breaking, wave forces, wave-current interactions, radiation stress effects, and sediment transport. The importance of nonlinearities in the nearshore region cannot be overemphasized. At present, however, there is no wave theory that adequately accounts for these interactions, and field observations are sparse. Herein, the bispectrum is used to investigate the temporal and spatial variation of wave-wave interactions in cross-shore velocity for shoaling surface gravity waves

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34

Liu, Yan Jun, Xing Wang Sun, and Bo Zheng. "The Finite Element Analysis of the Column of Wave-Power Generating Device." Advanced Materials Research 614-615 (December 2012): 546–49. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.546.

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The columnof the wave-power generating device is analysed through theoretical analysis using finite element software. The deformation and stress under maximum wave impact force is calculated by harmonic analysis, the result of which indicates that deformation and stress of the maincolumn, which under huge wave impact calculated by Morison theory, is very small. The stress of the column generated by wave load is less than its material yield strength, which indicates that the safety performance meets the requirements.

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35

Song, Hong Wei, Zhen Luo, San San Ao, and Rui Wang. "Propagation Character of the Stress Wave in Weld Joints." Advanced Materials Research 199-200 (February 2011): 801–4. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.801.

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Stress wave test technique has broad prospects because of the long distance, large scale and relatively low cost. This paper studies the stress wave propagation characteristics in the butt weld joints in the case of external symmetrical impact. The stress wave propagating before and after the joints is measured by dynamic strain gauge. Then model analysis and simulation is applied to research stress wave. The results show the loss of stress wave is small. After spectrum analysis, the change of propagating stress wave can be detected.

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Zhang, Guang, Dong Zi Pan, Jing Xi Chen, and Ai Fang Zhou. "Analysis of Pile-Soil Interaction by Computer Simulation." Key Engineering Materials 326-328 (December 2006): 1531–34. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1531.

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In this paper, a numerical model to simulate the interaction of pile-soil based on the one-dimension stress wave theory is established, which can provide the propagating process and reflection characteristics of stress wave under impulsed load in concrete piles. The simulation is carried on about the stress wave in integrated pile and defective pile, which provide all kinds of the propagating characteristics. It can enhance the accuracy of dynamic test. The validity of this approach is verified through the comparison of the measured curve and the simulated curve.

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37

Shin, Yung S., Booki Kim, and Alexander J. Fyfe. "Stress Combination for Fatigue Analysis of Ship Structures." Journal of Offshore Mechanics and Arctic Engineering 127, no. 2 (2004): 175–81. http://dx.doi.org/10.1115/1.1924399.

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A methodology for calculating the correlation factors to combine the long-term dynamic stress components of ship structure from various loads in seas is presented. The proposed methodology is valid for a stationary ergodic narrow-banded Gaussian process. The total combined stress in short-term sea states is expressed by linear summation of the component stresses with the corresponding combination factors. This expression is proven to be mathematically exact when applied to a single random sea. The long-term total stress is similarly expressed by linear summation of component stresses with appr

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38

Sang, De Yi, Jian Jun Zhao, and Yi Wang. "Carrier Rocking Motion Model Based on Stress Analysis." Applied Mechanics and Materials 667 (October 2014): 430–36. http://dx.doi.org/10.4028/www.scientific.net/amm.667.430.

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The complicated sports of aircraft carrier affected by the wind and waves when sailing affects the measurement accuracy of shipboard radar seriously. In order to eliminate the effect of carrier motion to improve the accuracy of radar measurement, we must establish the motion model of aircraft carrier and research on the motion of carrier. At present there is not much research on movement of domestic aircraft carriers, and the overseas research are in a state secret. Established the motion model of aircraft carrier according to the force of carrier caused by wave. Provides help for the research

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Pecelj, Milica M., Milica Z. Lukić, Dejan J. Filipović, Branko M. Protić, and Uroš M. Bogdanović. "Analysis of the Universal Thermal Climate Index during heat waves in Serbia." Natural Hazards and Earth System Sciences 20, no. 7 (2020): 2021–36. http://dx.doi.org/10.5194/nhess-20-2021-2020.

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Abstract. The objective of this paper is to assess the bioclimatic conditions in Serbia during summer in order to identify biothermal heat hazard. Special emphasis is placed on the bioclimatic index UTCI (Universal Thermal Climate Index), whose purpose is to evaluate the degree of thermal stress that the human body is exposed to. For this research, mean daily and hourly (07:00 and 14:00 CET) meteorological data from three weather stations (Zlatibor, Novi Sad and Niš) have been collected for the period from 1998 to 2017. In order to identify patterns of biothermal heat stress conditions, the th

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RAVAL, ASHISH, XIANYUN WEN, and MICHAEL H. SMITH. "Numerical simulation of viscous, nonlinear and progressive water waves." Journal of Fluid Mechanics 637 (September 23, 2009): 443–73. http://dx.doi.org/10.1017/s002211200999070x.

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A numerical simulation is performed to study the velocity, streamlines, vorticity and shear stress distributions in viscous water waves with different wave steepness in intermediate and deep water depth when the average wind velocity is zero. The numerical results present evidence of ‘clockwise’ and ‘anticlockwise’ rotation of the fluid at the trough and crest of the water waves. These results show thicker vorticity layers near the surface of water wave than that predicted by the theories of inviscid rotational flow and the low Reynolds number viscous flow. Moreover, the magnitude of vorticity

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Kikuchi, Masanori, Ryuuta Nitta, Yoshihide Kiyosawa, and Xin Yue Zhang. "Stress Analysis of Cup Type Strain Wave Gearing." Key Engineering Materials 243-244 (July 2003): 129–34. http://dx.doi.org/10.4028/www.scientific.net/kem.243-244.129.

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KIKUCHI, Masanori, Koji ISHIBASHI, Yoshihide KIYOSAWA, and Xin-yue ZHANG. "Stress Analysis of Cup Type Strain Wave Gearing." Transactions of the Japan Society of Mechanical Engineers Series C 64, no. 621 (1998): 1604–10. http://dx.doi.org/10.1299/kikaic.64.1604.

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Mirzajani, Mohsen, Naser Khaji, and Muneo Hori. "Stress Wave Propagation Analysis in One-Dimensional Micropolar Rods with Variable Cross-Section Using Micropolar Wave Finite Element Method." International Journal of Applied Mechanics 10, no. 04 (2018): 1850039. http://dx.doi.org/10.1142/s1758825118500394.

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The wave finite element method (WFEM) is developed to simulate the wave propagation in one-dimensional problem of nonhomogeneous linear micropolar rod of variable cross-section. For this purpose, two kinds of waves with fast and slow velocities are detected. For micropolar medium, an additional rotational degree of freedom (DOF) is considered besides the classical elasticity’s DOF. The proposed method is implemented to solve the wave propagation, reflection and transmission of two distinct waves and impact problems in micropolar rods with different layers. Along with new solutions, results of

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Zhang, Yi Guang, Chuan Lu Zhou, and Yi Xian Liu. "Dynamic Stresses Concentrations of SH Wave by Circular Tunnel with Lining." Advanced Materials Research 323 (August 2011): 18–22. http://dx.doi.org/10.4028/www.scientific.net/amr.323.18.

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Based on the scattering theory of elastic waves, employing the wave function expansion method, the scattering and the dynamic stresses concentration of SH wave by circular tunnel with lining are investigated. The analytical solution of the problem is derived, and the numerical solution of the dynamic stress concentration factors around the lining is presented. The effects of the shear elasticity of the surrounding rock and the lining, the wave number on the dynamic stress concentration factors are analyzed. Analysis has shown that the shear elasticity of the surrounding rock and the wave numbe

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Jurayev, Uktam Shavkatovich, and Jamoldin Djhalolovich Akhmedov. "ESTIMATION OF THE SEISMONETRESS STATE OF UNDERGROUND STRUCTURES BY WAVE DYNAMICS METHODS PART 2." Nazariy va amaliy tadqiqotlar xalqaro jurnali 2, no. 11 (2022): 12–17. https://doi.org/10.5281/zenodo.7388661.

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<em>This article consists of 2 parts, in which a brief analysis of the literature devoted to the study of the stress-strain state of shallow tunnels under the action of dynamic forces is carried out, conclusions are presented based on the analysis of the literature. Wave dynamics methods make it possible to solve a number of plane problems on stress concentrations in a half-plane or space. However, ignoring the viscoelastic properties of the environment when calculating underground structures for seismic effects can lead to serious errors.</em>

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Peng, Ru Shu, De Wen Tang, and Qiong Liu. "Mechanics Behavior Analysis on Laser Cladding under Repeated Impacting Load." Advanced Materials Research 154-155 (October 2010): 1100–1103. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1100.

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On the property of repeated impact load, the attrition, hardening and plasticity warp of the laser cladding sampling were researched by using stress wave spread theory. Results show that under repeated impact loads, stress wave occurs on the metallurgical joint surface of the coat and the basis, forming stretch wave that causes coat slitting and angle splitting. The micro-pits failure and deep exfoliation occur on the coat surface because of the stress centralization. The accumulation of impact load energy cause hardness change and plasticity warp.

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Hu, Dong Dong, Yan Jun Liu, Li Kang Hong, and Xiao Chen Guo. "Finite Element Analysis for Water Turbine of Horizontal Axis Rotor Wave Energy Converter." Applied Mechanics and Materials 530-531 (February 2014): 906–10. http://dx.doi.org/10.4028/www.scientific.net/amm.530-531.906.

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Horizontal axis rotor wave energy converter is a new form for utilization of ocean wave energy, and the axis of its water turbine is parallel with the sea level and perpendicular to the direction of wave. This paper employed the linear wave theory and Froude-Krylov presumptive method to calculate the wave force, which was exerted on the wave energy converter in extremely arduous wave conditions. The finite element research on the deformation and the stress response of the water turbine was carried out to assess its security. The results show that the deformation and the stress responses both r

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Shamoon, Noushad, Ahmed Sadaf, Ansari Basit, Saleem Yusra, Farah Batool S., and Farah Batool Syeda. "A review of the literature on the impact of acute and chronic stress upon brain waves." Annals of Psychophysiology 8, no. 1 (2021): 49–61. https://doi.org/10.29052/2412-3188.v8.i1.2021.49-61.

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Abstract   <strong>Background:</strong> The biological responses associated with stress originate in the brain and involve different physiological and physical effects. The direct effect of stress on cortical responses can be visualized by recording the brain’s electrical waves using an encephalograph. These waves are recorded by means of an electroencephalogram (EEG). EEG is the most commonly used neuroimaging technique to study the patterns of brainwaves and functioning of the brain. It also measures the variation of the electric field produced by neuronal activity a millisec

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Kamel, Filali, and Sbartai Badreddine. "Liquefaction Analysis using Shear Wave Velocity." Civil Engineering Journal 6, no. 10 (2020): 1944–55. http://dx.doi.org/10.28991/cej-2020-03091594.

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The Andrus and Stokoe curves developed based on shear wave velocity case history databases, are the most widely used in the context of the Seed and Idriss simplified procedure as a deterministic model. Theses curves were developed from the database according to the calculate cyclic stress ratio (CSR) proposed by Seed and Idriss in 1971 with the assumption that the dynamic cyclic shear stress (τd) is always less than the simplified cyclic shear stress (τr) deduced by Seed and Idriss based on their simplifying hypotheses (rd= τd / τr <1). Filali and Sbartai in 2017, showed that rd can in many

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Vongvisessomjai, Suphat. "TIME-DEPENDENT WAVE SHEAR STRESS." Coastal Engineering Proceedings 1, no. 21 (1988): 81. http://dx.doi.org/10.9753/icce.v21.81.

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A knowledge of bed shear stress induced by waves is required to understand dynamic processes of nearshore morphologies as a results of sediment transport. However, the information on the stress is still incomplete due to lack of measured data. The study analyzes the unsteady horizontally averaged shear stresses measured over mobile beds in a water tunnel. It is found from the analysis that the presence of the third and fifth harmonics in the shear stress is in good agreement with the measured concentration of suspended sediments.

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