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Journal articles on the topic 'Struts (Engineering) Dynamics'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

He, Yong, Nandini Duraiswamy, Andreas O. Frank, and James E. Moore. "Blood Flow in Stented Arteries: A Parametric Comparison of Strut Design Patterns in Three Dimensions." Journal of Biomechanical Engineering 127, no. 4 (2005): 637–47. http://dx.doi.org/10.1115/1.1934122.

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Background: Restenosis after stent implantation varies with stent design. Alterations in secondary flow patterns and wall shear stress (WSS) can modulate intimal hyperplasia via their effects on platelet and inflammatory cell transport toward the wall, as well as direct effects on the endothelium. Method of Approach: Detailed flow characteristics were compared by estimating the WSS in the near-strut region of realistic stent designs using three-dimensional computational fluid dynamics (CFD), under pulsatile high and low flow conditions. The stent geometry employed was characterized by three ge

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2

Aihara, Aya, Victor Mendoza, Anders Goude, and Hans Bernhoff. "Comparison of Three-Dimensional Numerical Methods for Modeling of Strut Effect on the Performance of a Vertical Axis Wind Turbine." Energies 15, no. 7 (2022): 2361. http://dx.doi.org/10.3390/en15072361.

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This paper compares three different numerical models to evaluate their accuracy for predicting the performance of an H-rotor vertical-axis wind turbine (VAWT) considering the influence of struts. The strut of VAWTs is one factor that makes the flow feature around the turbine more complex and thus influences the rotor performance. The focus of this study is placed on analyzing how accurately three different numerical approaches are able to reproduce the force distribution and the resulting power, taking the strut effect into account. For the 12 kW straight-bladed VAWT, the blade force is simula

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3

Yin, Yuming, Subhash Rakheja, Jue Yang, and Paul-Emile Boileau. "Design optimization of an articulated frame steering system." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 10 (2017): 1339–52. http://dx.doi.org/10.1177/0954407017729052.

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The articulated frame-steered vehicles (AFSV) exhibit enhanced maneuverability but reduced yaw stability and greater steering power consumption. Apart from kinematics of the steering system, the dynamics of the actuating system strongly influence the performance of the AFSV, which is generally neglected in the reported studies. In this study, a yaw-plane model of the articulated vehicle coupled with the kinematic and dynamics properties of the steering struts is formulated to identify objective measures of the AFSV under steering inputs. The results suggest that the vehicle yaw oscillation/sta

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4

Jiménez, Juan M., Varesh Prasad, Michael D. Yu, et al. "Macro- and microscale variables regulate stent haemodynamics, fibrin deposition and thrombomodulin expression." Journal of The Royal Society Interface 11, no. 94 (2014): 20131079. http://dx.doi.org/10.1098/rsif.2013.1079.

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Drug eluting stents are associated with late stent thrombosis (LST), delayed healing and prolonged exposure of stent struts to blood flow. Using macroscale disturbed and undisturbed fluid flow waveforms, we numerically and experimentally determined the effects of microscale model strut geometries upon the generation of prothrombotic conditions that are mediated by flow perturbations. Rectangular cross-sectional stent strut geometries of varying heights and corresponding streamlined versions were studied in the presence of disturbed and undisturbed bulk fluid flow. Numerical simulations and par

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5

Virgin, L. N. "Postbuckling dynamics of struts as related to their loading devices." Engineering Structures 8, no. 2 (1986): 127–33. http://dx.doi.org/10.1016/0141-0296(86)90028-3.

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Cheon, Gill-Jeong, and K. B. Chandran. "Transient Behavior Analysis of a Mechanical Monoleaflet Heart Valve Prosthesis in the Closing Phase." Journal of Biomechanical Engineering 116, no. 4 (1994): 452–59. http://dx.doi.org/10.1115/1.2895796.

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In this paper, an analysis of the dynamics in the closing phase of the occluder of a mechanical monoleaflet heart valve prosthesis is presented. The dynamic analysis of the fluid in the vicinity of the occluder was based on the control volume approach. The backflow velocity of the fluid was computed by applying the continuity and momentum equations in the unsteady state. By considering the fluid pressure and gravity as external forces acting on the occluder, the moment equilibrium on the occluder was employed to analyze the motion of the occluder during closing and the force of impact between

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Chiastra, Claudio, Stefano Morlacchi, Diego Gallo, et al. "Computational fluid dynamic simulations of image-based stented coronary bifurcation models." Journal of The Royal Society Interface 10, no. 84 (2013): 20130193. http://dx.doi.org/10.1098/rsif.2013.0193.

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One of the relevant phenomenon associated with in-stent restenosis in coronary arteries is an altered haemodynamics in the stented region. Computational fluid dynamics (CFD) offers the possibility to investigate the haemodynamics at a level of detail not always accessible within experimental techniques. CFD can quantify and correlate the local haemodynamics structures which might lead to in-stent restenosis. The aim of this work is to study the fluid dynamics of realistic stented coronary artery models which replicate the complete clinical procedure of stent implantation. Two cases of patholog

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8

Manavi, Tejaswini, Masooma Ijaz, Helen O’Grady, et al. "Design and Haemodynamic Analysis of a Novel Anchoring System for Central Venous Pressure Measurement." Sensors 22, no. 21 (2022): 8552. http://dx.doi.org/10.3390/s22218552.

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Background/Objective: In recent years, treatment of heart failure patients has proved to benefit from implantation of pressure sensors in the pulmonary artery (PA). While longitudinal measurement of PA pressure profoundly improves a clinician’s ability to manage HF, the full potential of central venous pressure as a clinical tool has yet to be unlocked. Central venous pressure serves as a surrogate for the right atrial pressure, and thus could potentially predict a wider range of heart failure conditions. However, it is unclear if current sensor anchoring methods, designed for the PA, are suit

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9

Bel Laveda, Oriol, Marie-Alix Roche, Mohit Phadtare, et al. "Numerical Investigation of Aerodynamic Performance and Structural Analysis of a 3D J-Shaped Based Small-Scale Vertical Axis Wind Turbine." Energies 16, no. 20 (2023): 7024. http://dx.doi.org/10.3390/en16207024.

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Small vertical axis wind turbines (VAWTs) are often considered suitable for use in urban areas due to their compact design. However, they are also well known to offer poor performance at low wind speeds, which is a common situation in such environments. An optimised 3D J-shaped VAWT was designed from standard NACA 0015 blades and analysed numerically through computational fluid dynamics (CFD). A finite element analysis (FEA) was also carried out to ensure the model’s structural integrity. Optimal results were obtained with aluminium alloy hollow blades and stainless-steel struts with X-shaped

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10

Yin, Yuming, Subhash Rakheja, Jue Yang, and Paul-Emile Boileau. "Effect of articulated frame steering on the transient yaw responses of the vehicle." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 3 (2017): 384–99. http://dx.doi.org/10.1177/0954407017702987.

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The directional performance characteristics of articulated frame steering vehicles are known to be strongly coupled with the kinematic characteristics and the dynamic characteristics of the steering system. The reported studies on articulated frame steering generally focus on the yaw divergence behaviour or the snaking tendency of the vehicle based on its free-yaw-oscillation response, while neglecting important contributions due to the kinematics and the dynamics of the steering system. This study characterizes both the free-yaw-oscillation response and the transient steering response of an a

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Pramanik, Sudipta, Dennis Milaege, Maxwell Hein, Kay-Peter Hoyer, and Mirko Schaper. "Additive Manufacturing and Mechanical Properties of Auxetic and Non-Auxetic Ti24Nb4Zr8Sn Biomedical Stents: A Combined Experimental and Computational Modelling Approach." Crystals 13, no. 11 (2023): 1592. http://dx.doi.org/10.3390/cryst13111592.

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The effect of plaque deposition (atherosclerosis) on blood flow behaviour is investigated via computational fluid dynamics and structural mechanics simulations. To mitigate the narrowing of coronary artery atherosclerosis (stenosis), the computational modelling of auxetic and non-auxetic stents was performed in this study to minimise or even avoid these deposition agents in the future. Computational modelling was performed in unrestricted (open) conditions and restricted (in an artery) conditions. Finally, stent designs were produced by additive manufacturing, and mechanical testing of the ste

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Boudet, J., V. N. D. Autef, J. W. Chew, N. J. Hills, and O. Gentilhomme. "Numerical simulation of rim seal flows in axial turbines." Aeronautical Journal 109, no. 1098 (2005): 373–83. http://dx.doi.org/10.1017/s000192400070042x.

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AbstractIn a gas turbine, ingestion of hot gas into the high-pressure turbine disc cavities could cause metal overheat. To prevent this, cool air is taken from the compressor and ejected through the cavities. However, this sealing flow also reduces the overall efficiency, and a compromise has to be found between the level of ingestion tolerated and the losses. Recent advances made in applying Computational Fluid Dynamics to such configurations are presented, with the aim of better understanding the physical phenomena and providing reliable design tools. First, results showing the pumping effec

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Pecora, Rosario. "A Rational Numerical Method for Simulation of Drop-Impact Dynamics of Oleo-Pneumatic Landing Gear." Applied Sciences 11, no. 9 (2021): 4136. http://dx.doi.org/10.3390/app11094136.

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Oleo-pneumatic landing gear is a complex mechanical system conceived to efficiently absorb and dissipate an aircraft’s kinetic energy at touchdown, thus reducing the impact load and acceleration transmitted to the airframe. Due to its significant influence on ground loads, this system is generally designed in parallel with the main structural components of the aircraft, such as the fuselage and wings. Robust numerical models for simulating landing gear impact dynamics are essential from the preliminary design stage in order to properly assess aircraft configuration and structural arrangements.

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14

Chondrou, I. T., G. Mavrantonakis, N. Tsagarakis, E. Vergis, D. Pangalos, and T. G. Chondros. "Design evaluation of the fractured main landing gear of a BAE Jetstream SX-SKY aircraft." International Journal of Structural Integrity 6, no. 4 (2015): 468–92. http://dx.doi.org/10.1108/ijsi-08-2014-0039.

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Purpose – The purpose of this paper is to study the main landing gear (MLG) mechanism configuration. Design/methodology/approach – Mechanism kinematics and dynamics, stress analysis and sizing of the MLG structural members, and fatigue issues related with the mechanism operation. Spreadsheet solutions were incorporated to this survey to analyze the most conceivable loading situations, and important factors of the mechanism design for an initial evaluation of safety implications. Findings – MLG design approach along with conservative fatigue design factors lies in the area of accepted limits in

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15

Mani, M., A. Naghib-Lahouti, and M. Nazarinia. "Experimental and numerical aerodynamic analysis of a satellite launch vehicle with strap-on boosters." Aeronautical Journal 108, no. 1085 (2004): 379–87. http://dx.doi.org/10.1017/s0001924000005194.

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Abstract Results of numerical simulation of inviscid compressible flow around a generic satellite launch vehicle (SLV) with strap-on boosters using a commercial computational fluid dynamics (CFD) code named Star-CD are experimentally evaluated. Governing equations of flow around the SLV with two and two strap-on boosters were solved in three dimensions using the SIMPLE algorithm in an unstructured tetrahedral mesh, to determine longitudinal aerodynamic coefficients and surface pressure distribution at Mach numbers from 0·6 to 2·0, and angles-of-attack from 0° to 16°. To evaluate the numerical

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Xia, Chao, Xizhuang Shan, and Zhigang Yang. "Comparison of different ground simulation systems on the flow around a high-speed train." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 231, no. 2 (2016): 135–47. http://dx.doi.org/10.1177/0954409715626191.

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The influence of different ground simulation systems on the air flow around a high-speed train with zero yaw angle is investigated. Force values, force development graphs, surface pressures, the underbody flow and the wake are studied in detail with Computational Fluid Dynamics, which is initially validated by wind tunnel testing. It shows that the stationary ground has severe deviations from the full moving ground on the aerodynamic performance due to the inaccurate pressure distribution on the underbody. This is mainly attributed to the high level of interaction between the underbody and the

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17

Elliott, Marcus S., Jonathan S. Cole, Ross W. Blair, and Gary H. Menary. "Highlighting Hemodynamic Risks for Bioresorbable Stents in Coronary Arteries." Fluids 8, no. 9 (2023): 241. http://dx.doi.org/10.3390/fluids8090241.

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A three-dimensional, transient computational fluid dynamics analysis was conducted on an idealised geometry of a coronary artery fitted with representative geometries of an Absorb bioresorbable vascular scaffold (BVS) or a Xience drug-eluting stent (DES) in order to identify and compare areas of disturbed flow and potential risk sites. A non-Newtonian viscosity model was used with a transient velocity boundary condition programmed with user-defined functions. At-risk areas were quantified in terms of several parameters linked to restenosis: wall shear stress, time-averaged wall shear stress, o

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Sanvito, Andrea, Vincenzo Dossena, and Giacomo Persico. "Formulation, Validation, and Application of a Novel 3D BEM Tool for Vertical Axis Wind Turbines of General Shape and Size." Applied Sciences 11, no. 13 (2021): 5874. http://dx.doi.org/10.3390/app11135874.

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Low order models based on the Blade Element Momentum (BEM) theory exhibit modeling issues in the performance prediction of Vertical Axis Wind Turbines (VAWT) compared to Computational Fluid Dynamics, despite the widespread engineering practice of such methods. The present study shows that the capability of BEM codes applied to VAWTs can be greatly improved by implementing a novel three-dimensional set of high-order corrections and demonstrates this by comparing the BEM predictions against wind-tunnel experiments conducted on three small-scale VAWT models featuring different rotor design (H-sha

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Tupy, David, Vaclav Slama, and Robert Kalista. "Experimental Research on the Flow in the Steam Turbine Axial Exhaust Hood." EPJ Web of Conferences 269 (2022): 01063. http://dx.doi.org/10.1051/epjconf/202226901063.

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There is the still remaining task to increase the efficiency of power plants and steam turbines. One possibility to increase the thermodynamic efficiency is to apply a suitable exhaust hood. Axial exhaust hoods are mainly designed for small turbines up to 180 MW. They are a very important part of steam turbines and its main purpose is to take away the steam from the last stage outlet to a condenser with minimal loss or even with pressure compression and an increase in the last stage enthalpy drop. This paper concerns experimental measurements on the axial exhaust hood wind tunnel model. The ma

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20

Mohamad, Maysam N., Halla J. Mohamad, and Mohamad N. Mahmood. "Effects of Infill Panels with Various Configurations on the Non-Linear Dynamic Responses of Reinforced Concrete Structures." Tikrit Journal of Engineering Sciences 30, no. 4 (2023): 63–73. http://dx.doi.org/10.25130/tjes.30.4.8.

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Abstract: This study presents the effects of including infill panels on the non-linear dynamic response of a hypothetical reinforced concrete frame when subjected to an earthquake. Infill panels are represented by equivalent diagonal struts using three different configurations, i.e., single, double with three different connection locations with the beams, and triple struts. The main goal is to determine the simplest and most appropriate representation of the infill panels by analogous struts. The effect of panel sizes on the non-linear dynamic response of the structure is also presented in thi

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Awad, Eyad, Matthew Bedding-Tyrrell, Alberto Coccarelli, and Feihu Zhao. "In Silico Simulation of Porous Geometry-Guided Diffusion for Drug-Coated Tissue Engineering Scaffold Design." Organoids 4, no. 2 (2025): 8. https://doi.org/10.3390/organoids4020008.

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Recent research works have shown the effect of nutrient concentration on cell activity, such as proliferation and differentiation. In 3D cell culture, the impact of scaffold geometry, including pore size, strut diameter, and pore shape, on the concentration gradient within scaffolds under two different loading conditions—constant fluid perfusion and non-fluid perfusion—in a perfusion bioreactor is investigated by developing an in silico model of scaffolds. In this study, both triply periodic minimal surface (TPMS) (with gyroid struts) and non-TPMS (with cubic and spherical pores) scaffolds wer

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22

Liu, Renjie, Chao Wang, Suduo Xue, and Yao Zou. "Analysis on the Collapse Resistance of the Loop-free Suspen-Dome Subjected to Cable or Strut Failure." Journal of the International Association for Shell and Spatial Structures 63, no. 1 (2022): 5–15. http://dx.doi.org/10.20898/j.iass.2021.018_2.

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Current suspen-domes use loop cables which are key elements and carry large tensions. Loop-free suspen-dome was proposed for improving the collapse resistance and reducing cable tensions. The collapse resistance of loop-free suspen-dome has not been verified. In this paper, analysis on dynamic response of both current suspen-dome and loop-free suspen-dome induced by sudden cable or strut failure is performed to investigate the collapse resistance. Under the loaded state, cables or struts were suddenly removed from the structure to simulate cables or struts failure. Th residual bearing capacity

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Sattar, Siamak, and Abbie B. Liel. "Seismic Performance of Nonductile Reinforced Concrete Frames with Masonry Infill Walls—I: Development of a Strut Model Enhanced by Finite Element Models." Earthquake Spectra 32, no. 2 (2016): 795–818. http://dx.doi.org/10.1193/90914eqs139m.

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Reinforced concrete (RC) frames with masonry infill walls are prevalent in high-seismicity areas worldwide and have experienced significant damage in earthquakes. This paper proposes a finite element–enhanced strut model to simulate the in-plane seismic response of masonry-infilled RC frames through time-history analysis. The strut backbone defining the behavior of the wall is developed from the response extracted from the finite element (FE) model(s) for the infill and frame configuration of interest. These struts are combined with models capturing flexural and shear failures of beam-columns

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Asiri, S., A. Baz, and D. Pines. "Periodic Struts for Gearbox Support System." Journal of Vibration and Control 11, no. 6 (2005): 709–21. http://dx.doi.org/10.1177/1077546305052784.

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Passive periodic structures exhibit unique dynamic characteristics that make them act as mechanical filters for wave propagation. As a result, waves can propagate along the periodic structures only within specific frequency bands called “pass bands” and wave propagation is completely blocked within other frequency bands called “stop bands”. In this paper, the emphasis is placed on developing a new class of these periodic structures called passive periodic struts, which can be used to support gearbox systems on the airframes of helicopters. When designed properly, the passive periodic strut can

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Zhang, Hao, Hui Lv, Zhongyi Zhu, Zhaoquan Chen, and Yiyi Chu. "Study on the Dynamic Response of the Component Failure of Drum-Shaped Honeycomb-Type III Cable Dome with Quad-Strut Layout." Buildings 13, no. 8 (2023): 1894. http://dx.doi.org/10.3390/buildings13081894.

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The drum-shaped honeycomb-type cable dome departs from traditional concepts and incorporates the idea of multiple strut configurations. It is the most diverse type of cable dome structure. Both cables and struts serve as the main load-bearing components. Analyzing the effects of local component failure is crucial for designing large-scale cable domes able to resist continuous collapse. A numerical analysis model using the ANSYS finite element method with a 120 m span is established. Dynamic analysis methods are employed to study the response of structural internal forces and displacements duri

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Sayma, A. I., M. Vahdati, and M. Imregun. "Multi-bladerow fan forced response predictions using an integrated three-dimensional time-domain aeroelasticity model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 12 (2000): 1467–83. http://dx.doi.org/10.1243/0954406001523425.

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A non-linear integrated aeroelasticity system to predict the forced vibration response of aero-engine fans is presented in this paper. The computational fluid dynamics (CFD) solver, which uses Favre-averaged Navier-Stokes equations on unstructured grids of mixed elements, is coupled to a modal model of the structure so that the effects of blade flexibility can be accommodated. The structural motion due to unsteady fluid forces is computed at every time step and the flow mesh is moved to follow the structure so that the resulting flow unsteadiness is determined in a time-accurate fashion. Two f

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Lucas, C. A. "The effects of icing on the dynamic response of thick aerofoils." Aeronautical Journal 95, no. 947 (1991): 231–40. http://dx.doi.org/10.1017/s000192400002399x.

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SummaryVibration of a flexible wing strut of 30% thickness/chord ratio occurred during icing trials of a commuter aircraft. This was caused by the formation of ice on the leading-edge of the strut producing a ‘double-horned’ ice shape. The two horns formed one above the other, having very sharp leading-edges with radii less than 0·6% of the strut chord of 0·23 m.Wind tunnel testing demonstrated that, over a limited range of incidence angle, the flow around the flexible strut was dominated by a long separation bubble that periodically ‘burst’ and re-attached. This occurred at a reduced frequenc

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Kong, De Sen, Yan Qing Men, and Li Hua Wang. "A Simplified Computational Method of Lateral Dynamic Impedance of Single Pile." Advanced Materials Research 243-249 (May 2011): 2985–89. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.2985.

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Research of the pile-soil interaction effect is a complicated issue in civil engineering. Using the principle of soil dynamics and structural dynamics, a simplified computational method for computing the lateral dynamic impedance of single pile embedded in layered non-homogeneous subsoil is established based on a certain assumptions. Both non-homogeneity of soil strata and softening effect of soil layer around pile during vibration as well as separation of pile-soil interface are simultaneously taken into account in the proposed computational method. The characteristics of the frequency-depend

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Bovo, Marco, Michele Tondi, and Marco Savoia. "Infill Modelling Influence on Dynamic Identification and Model Updating of Reinforced Concrete Framed Buildings." Advances in Civil Engineering 2020 (June 19, 2020): 1–16. http://dx.doi.org/10.1155/2020/9384080.

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In order to correctly capture the dynamic behavior of infilled framed buildings, the importance to take into account in seismic design the infill panels’ contribution is nowadays well recognized since they could modify in a significant way the global and local response of the whole building. Despite about sixty years of continuous research in the field, the modelling of the frame-infill interaction still represents a serious issue for the daily practical design since there is no reference model proven to be suitable to cover a wide record of possible cases. Moreover, few works are available in

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Lin, Qing, and Jie Ren. "Investigation on the Horizontal Landing Velocity and Pitch Angle Impact on the Soft-Landing Dynamic Characteristics." International Journal of Aerospace Engineering 2022 (January 25, 2022): 1–16. http://dx.doi.org/10.1155/2022/3277581.

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The dynamic analysis of the soft landing of the lunar probe is very important to the design of the probe. The initial movement and attitude parameters of the probe during landing have a direct influence on the landing impact. In order to investigate the lunar probe soft-landing dynamic impact by different initial horizontal velocities, pitch angles, and inclinations of the lunar slope, an inertial force-based 7-DOF soft-landing dynamic model is applied under two conditions: the upward and downward slope landing surfaces. The impact on the dynamic characteristics of soft landing is analyzed in

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Chen, Li Jing, Jian Zheng, and Cheng Ke Zhang. "Research on Numerical Simulation Model for Crack Growth Driven by Detonation Gas in High-Deep Rock Strata." Applied Mechanics and Materials 170-173 (May 2012): 824–29. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.824.

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The effect of detonation gas upon rock fracture is the cross-frontier research project of fluid dynamics coupling and rock dynamics of crack dynamic growth, having the important scientific significance and explicit application value. In the process of detonation gas driven fracture growth, the varying law of the denotation gas pressure distribution in cracks is inter-influent with the geometric morphology variations in crack growth. This paper analyzes the denotation gas flowing behaviors, establishes the flowing model for denotation gas in rock cracks and the models for the rock crack dynamic

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Chen, Lianmeng, Zebin Li, Yijie Liu, et al. "Analysis and Evaluation of the Progressive Collapse Behaviour of a Cable Dome Structure." Buildings 12, no. 10 (2022): 1700. http://dx.doi.org/10.3390/buildings12101700.

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In this study, the progressive collapse behaviour of a cable dome structure was analysed and evaluated according to the importance of element. First, the dynamic response and collapse mode caused by the removal of different types of cables and struts from a cable dome structure were studied using the instantaneous unloading method of full dynamic equivalent load. Second, a method was developed for element importance classification based on collapse modes, and the importance coefficient was introduced after comparing the node displacements before and after the removal of different elements. On

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Zhao, Yongjie, Ziqiang Zhang, and Gang Cheng. "Inverse rigid-body dynamic analysis for a 3UPS-PRU parallel robot." Advances in Mechanical Engineering 9, no. 2 (2017): 168781401769319. http://dx.doi.org/10.1177/1687814017693194.

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Inverse rigid-body dynamic analysis for a 3UPS-PRU parallel robot are conducted in this research. The position, velocity, acceleration, jerk, and singularity are considered in the inverse kinematics analysis. The rigid-body dynamic model is developed by means of the principle of virtual work and the concept of link Jacobian matrices. The driving torque, driving power, and required output work of motors have been computed in the inverse rigid-body dynamics analysis. For the pre-defined trajectory, the required output work generated by the driving motor is achieved by numerical integration techn

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Suresh, PS, Niranjan K. Sura, and K. Shankar. "Investigation of nonlinear landing gear behavior and dynamic responses on high performance aircraft." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 15 (2019): 5674–88. http://dx.doi.org/10.1177/0954410019854628.

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The dynamic responses simulation of aircraft as rigid body considering heave, pitch, and roll motions, coupled onto a tricycle landing gear arrangement is presented. Equation of motion for each landing gear consists of un-sprung mass vertical and longitudinal motions considering strut nonlinear stiffness and damping combined with strut bending flexibility. Initially, the nonlinear dynamic response model is subjected to an input of riding over staggered bump and the responses are compared with linear landing gear model. It is observed that aircraft dynamics and important landing gear events suc

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Chen, Hu, Xingbo Fang, and Hong Nie. "Analysis of Carrier-Based Aircraft Catapult Launching Based on Variable Topology Dynamics." Applied Sciences 11, no. 19 (2021): 9037. http://dx.doi.org/10.3390/app11199037.

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The catapult process of a carrier-based aircraft includes multiple links such as catapult tensioning, separation of the holding rod, dragging and running, separation of the catapult and drag shuttle, and free running. The connection relationships between the front landing gear of the carrier-based aircraft and other related components in each link are different, therefore, it is necessary to adjust the topological relationships of the dynamic model in real time, when solving the catapult dynamics of a carrier-based aircraft. In this paper, a dynamic model of the multibody system of the catapul

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Wang, Zhiqiang, Jingkai Li, Chao Wu, et al. "Study on Influence Laws of Strata Behaviors for Shallow Coal Seam Mining beneath Gully Terrain." Shock and Vibration 2021 (July 2, 2021): 1–12. http://dx.doi.org/10.1155/2021/3954659.

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The study on influence laws of strata behaviors is the basic guarantee of safety mining for shallow coal seam beneath gully terrain. Taking 3302 mining face of Zhujiamao Coal Mine as the engineering background, the laws of strata behaviors for shallow coal seam mining beneath gully terrain are studied by field detection, theoretical analysis, and numerical simulation. The strata pressure observation and the hydraulic support working resistance show that the dynamic strata behaviors appear violently during mining beneath the gully bottom. The theoretical analysis shows that the rotation and bre

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Modi, Raghvendra R. "Seismic Performance Assessment of Masonary Infilled RC Frames by Using Staad PRO." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 3908–18. http://dx.doi.org/10.22214/ijraset.2022.43272.

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Abstract: Now a days construction of the RC frame is common because of the simplicity in construction. The masonry walls are mainly used for partition and insulation purposes rather than for structural purposes. However, during the earthquake, this filling contributes to the response of the structure and the behavior of the filling frame is different from that expected for the structure of the bare frame. The fill acts as a compression strut between column and beam. For this purpose, linear dynamic analysis were carried out on the structure of the RC masonry frame to study the influence of the

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Lin, Shengmao, Pengfei Dong, Changchun Zhou, et al. "Degradation modeling of poly-l-lactide acid (PLLA) bioresorbable vascular scaffold within a coronary artery." Nanotechnology Reviews 9, no. 1 (2020): 1217–26. http://dx.doi.org/10.1515/ntrev-2020-0093.

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AbstractIn this work, a strain-based degradation model was implemented and validated to better understand the dynamic interactions between the bioresorbable vascular scaffold (BVS) and the artery during the degradation process. Integrating the strain-modulated degradation equation into commercial finite element codes allows a better control and visualization of local mechanical parameters. Both strut thinning and discontinuity of the stent struts within an artery were captured and visualized. The predicted results in terms of mass loss and fracture locations were validated by the documented ex

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Wang, Daoyong, Wencan Zhang, Mu Chai, and Xiaguang Zeng. "Research on the dynamic characteristic of semi-active hydraulic damping strut." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 6 (2019): 1779–91. http://dx.doi.org/10.1177/0954407019881514.

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To reduce the vibration and shock of powertrain in the process of engine key on/off and vehicle in situ shift, a novel semi-active hydraulic damping strut is developed. The purpose of this paper is to study and discuss the dynamic stiffness model of the semi-active hydraulic damping strut. In this study, the dynamic characteristics of semi-active hydraulic damping strut were analyzed based on MTS 831 test rig first. Then, the dynamic stiffness model of semi-active hydraulic damping strut was established based on 2 degrees of freedom vibration system. In this research, a linear, fractional deri

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Wang, Dao-Yong, Wen-Can Zhang, and Xia-Guang Zeng. "Investigation on a semi-active hydraulic damping strut to reduce vehicle in situ shift vibration." Journal of Vibration and Control 26, no. 1-2 (2019): 3–18. http://dx.doi.org/10.1177/1077546319874921.

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In order to reduce the shock and vibration caused by torque disturbance of the gearbox in vehicles equipped with automatic transmission in the process of in situ shift, a novel semi-active hydraulic damping strut is introduced in the powertrain mounting system. The dynamic response evaluation indexes of vehicle in situ shift are put forward, and a 13-degree of freedom vehicle dynamic model including the semi-active hydraulic damping strut is established. The optimized dynamic characteristic parameters are acquired according to the principle of sharing force and the 13-degree of freedom vehicle

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SWARTZ, M. A., and M. J. D. HAYES. "KINEMATIC AND DYNAMIC ANALYSIS OF A SPATIAL ONE-DOF FOLDABLE TENSEGRITY MECHANISM." Transactions of the Canadian Society for Mechanical Engineering 31, no. 4 (2007): 421–31. http://dx.doi.org/10.1139/tcsme-2007-0030.

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This paper presents a mechanical analysis of a spatial 1-DOF tensegrity mechanism created by connecting three planar tensegrity mechanisms to form a triangular prism. The subsequent investigation produced kinematic and dynamic models that allow the workspace-boundary singularities and minimum energy configuration to be determined. Singularities were found to occur when the mechanism is folded in the vertical X, Y plane or in the horizontal X, Z plane. The minimum energy configuration, formed by the angle between the horizontal plane and the actuated strut, was found to be θ = π/4. However, whe

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Ruzimov, Anvarbek Sh. "DYNAMICALLY STRESS-STRAIN STATE OF TWO-LAYER VISCOELASTIC CYLINDERS UNDER DYNAMIC EXCITATION." Oriental Journal of Physics and Mathematics 03, no. 03 (2023): 8–18. http://dx.doi.org/10.37547/supsci-ojpm-03-03-02.

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This article considers the dynamically stress-strain state of two-layer viscoelastic cylinders under internal (or kinematic) excitation. The relationship between stress and strain is satisfied by the Boltzmann-Volterra integral relations. The problem is reduced to a plane problem of the theory of viscoelasticity. The stated problem is solved by the Green-Lamb potential method. The resulting integro-differential equations in partial derivatives are solved using special Bessel and Hankel functions of the 1st and 2nd kind of the nth order. Solutions are expressed in terms of special functions of

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Pan, Junfeng, Shaohong Liu, Shuwen Wang, and Yongxue Xia. "A New Theoretical View of Rockburst and Its Engineering Application." Advances in Civil Engineering 2018 (August 16, 2018): 1–12. http://dx.doi.org/10.1155/2018/4683457.

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Traditionally, rockburst is considered as a dynamic phenomenon of sudden destruction of coal/rock mass. In this study, rockburst is treated as an event process rather than a phenomenon. This paper introduces typical rockburst process, its classification, mechanism of internal and external causes, and energy criterion. Analysis indicates that rockburst is a dynamic process that includes three sequential phases: burst start-up, burst energy transfer, and rockburst pressure behavior. Excessive static stress concentration in the strata nearby the target zone appears to be the internal cause of roc

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Yue, Shuai, Hong Nie, Ming Zhang, Mingyang Huang, He Zhu, and Dafu Xu. "Dynamic analysis for vertical soft landing of reusable launch vehicle with landing strut flexibility." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 4 (2018): 1377–96. http://dx.doi.org/10.1177/0954410017753209.

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Based on oleo-honeycomb dampers, a 6-DOF vertical soft landing dynamic model for reusable launch vehicle considering landing strut flexibility is constructed. In order to better analyze the lateral deflection and friction force of the “cantilever beam” type landing strut, a new model for strut is incorporated. Static analysis is first performed based on the rotation angle compatibility equations to attain the equivalent inertia moment. Then the strut lateral vibration model and friction force model are obtained by simplifying it as viscoelastic beam with a tip mass. After that, the ADAMS model

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SHEKASTEHBAND, B., and K. ABEDI. "DYNAMIC PROPAGATION OF SNAP-THROUGH BUCKLING IN TENSEGRITY STRUCTURES." International Journal of Structural Stability and Dynamics 14, no. 01 (2013): 1350049. http://dx.doi.org/10.1142/s0219455413500491.

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Tensegrity structures under certain conditions may be prone to snap-through buckling. The temporary loss of equilibrium due to snap-through normally results in a dynamic force being applied to each node associated with the snap-through. This paper presents a numerical study on the progressive collapse behavior of tensegrity structures due to the buckling of struts. Emphasis is given to the dynamic nature of the coupled member and nodal snap-through effects on the overall structural behavior. Member buckling is taken into consideration by carefully following the buckling load–displacement respo

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Abaturova, I. V., L. A. Storozhenko, E. D. Nugmanova, and V. S. Kozlov. "Dynamics of Engineering and Geological Conditions of Mineral Deposits (from Exploration to Exploitation)." Вестник Пермского университета. Геология 20, no. 3 (2021): 222–28. http://dx.doi.org/10.17072/psu.geol.20.3.222.

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The development of mineral deposits has strong transformative effect on the geological environment. At the same time, all the components of geotechnical conditions (relief, structure of rock massifs, hydrogeological and geocryological conditions etc.), formed over a long geological time, are actively changing. Geological processes are activated and new mining-geological processes are formed. New strata are formed on the Earth's surface along with the technogenic formations and technogenic deposits. Today, the scale of technogenesis in mining is comparable to the results of geological activitie

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Kan, Ziyun, Haijun Peng, Biaoshong Chen, Xiaohui Xie, and Lining Sun. "Investigation of strut collision in tensegrity statics and dynamics." International Journal of Solids and Structures 167 (August 2019): 202–19. http://dx.doi.org/10.1016/j.ijsolstr.2019.03.012.

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Lai, Xingping, Leiming Zhang, Yun Zhang, Pengfei Shan, Peifeng Wan, and Kaiwen Mu. "Research of the Backfill Body Compaction Ratio Based on Upward Backfill Safety Mining of the Close-Distance Coal Seam Group." Geofluids 2022 (March 7, 2022): 1–11. http://dx.doi.org/10.1155/2022/8418218.

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During upward backfill mining of the close-distance coal seam group, the reasonable design of the backfill body compaction ratio (BBCR) of lower coal seam goaf plays a key role in controlling overburden strata movement and deformation. In this paper, the feasibility discrimination method of upward caving mining was adopted; it was found that when the coal seam spacing was small, the recovery was not possible due to the instability of the upper coal strata equilibrium structure caused by the mining. Hence, the upward backfill mining method was proposed; combined with the migration control mecha

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Abaturova, Irina V., Ivan A. Savintsev, Liubov A. Storozhenko, Elvina D. Nugmanova, and Vladislav S. Kozlov. "Sequence of studying engineering and geological conditions of mineral deposits from exploration to development." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal 7, no. 7 (2020): 83–91. http://dx.doi.org/10.21440/0536-1028-2020-7-83-91.

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geological environment. Actively change all the components of engineering-geological conditions (EGC), formed during the long geological time: the topography, structure of rocks, hydrogeological and permafrost conditions, are formed by geological processes and, at the same time on the surface of the Earth formed a new strata of man-made structures, and often man-made deposits. The scale of technogenesis in mining today is comparable to the results of geological activity that took place over many millions of years. Therefore, even at the early stages of studying the EGC MD, it is necessary to u

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Zhang, Jie, Bin Wang, Wenyong Bai, and Sen Yang. "A Study on the Mechanism of Dynamic Pressure during the Combinatorial Key Strata Rock Column Instability in Shallow Multi-coal Seams." Advances in Civil Engineering 2021 (March 2, 2021): 1–11. http://dx.doi.org/10.1155/2021/6664487.

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In order to study the pressure changes and support failure in mining face under concentrated coal pillar in shallow coal seam, the concentrated coal pillar in 30105 working face of Nan Liang Coal Mine was selected as the research object. In this study, the mechanism of dynamic mine pressure in mining face under concentrated coal pillar was investigated through multiple simulation experiments, numerical simulations, and theoretical analysis. The results of similar simulation experiment indicate that the dynamic mine pressure occurred at 25 m under the concentrated coal pillar and 7 m beyond the

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