Article
Engineering, Mechanical
Danylo Pikunov, Andrzej Stefanski
Summary: This paper focuses on the numerical analysis of vibrations induced by friction in an oscillator model, revealing the dynamic behavior of the system response reflected by the friction force and observing some synchronous correlation. Additionally, the coexistence effect of irregular friction force at the contact point of the frictional brush and ground surface with the regular response of the system in the quasi-periodic regime is reported.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Zhen Zhou, Xudong Zheng, Qi Wang, Zhang Chen, Yiyong Sun, Bin Liang
Summary: The paper presents a modeling method and algorithm for point contact non-smooth multibody system based on the 2D LuGre friction model. Parameter identification and dynamic modeling were discussed, showing the effectiveness of the method in simulating stick slip motion and simplifying numerical algorithms. The method was applied to wheel mechanisms with single-point and multi-point contact, demonstrating its ability to analyze stick-slip motions.
MECHANISM AND MACHINE THEORY
(2021)
Article
Engineering, Mechanical
Mohammad Khodadadi Dehkordi, Amin Taraghi Osguei, Iman Khamoushi, Ekaterina Pavlovskaia, Marian Wiercigroch
Summary: In this study, a mathematical model of the anti stick-slip tool (ASST) is developed for the first time, considering the internal friction on the helical spline and the pre-load of the internal spring. Four distinct states of the coupled rotational and axial movements of the tool are proposed, providing a better understanding of the mechanics of the ASST. Parametric studies and modeling are conducted, laying the foundation for further research on the operation of the tool.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mechanics
Benat Gurrutxaga-Lerma
Summary: An analytic formulation is presented for the study of planar elastodynamic contact in bimaterial interfaces subject to dry friction and slip. The elastic waves scattered by a planar contact interface are analytically expressed using the Wiener-Hopf technique. The magnitude of the stick and slip regions at the interface can be determined using the derived formulation, providing a complete analytic understanding of the interfacial tractions and allowing for modeling of elastic wave scattering in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Ingrid Pires, Helon Vicente Hultmann Ayala, Hans Ingo Weber
Summary: The modeling and analysis of drill string dynamics are challenging due to the interactions between nonlinear bit-rock and drill-string-borehole. Torsional, lateral, and axial vibration modes have a negative impact on drilling process, making proper modeling of the system dynamics necessary. This paper focuses on torsional dynamics and model of an experimental system subjected to friction torque, using an ensemble approach to calibrate dynamical system parameters related to friction and improve prediction accuracy.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Han Hu, Anas Batou, Huajiang Ouyang
Summary: This study investigates stochastic planar stick-slip motions using a slider-on-belt model, where the coefficient of friction (COF) at the contact interface is modeled as a random field. New three-variable stick-slip transition criteria are proposed for improved accuracy and robustness. Stochastic analyses are performed on the Peak-to-Valley displacement and friction forces, as well as the duration of the stick state. The results show that the correlation length of the COF random field is the primary factor influencing the system's stochastic behavior, while the belt velocity and mean COF value significantly affect the stick state duration compared to the deterministic model.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Mathematics, Applied
Xuechuan Wang, Xinjun Long, Xiaokui Yue, Honghua Dai, Satya N. Atluri
Summary: This paper presents a new approach to studying the nonlinear dynamical behaviors of a belt-driven two-coupled friction oscillator. By deriving dimensionless parameters and conducting numerical simulations, the relationships between these parameters and the system's steady state responses are revealed. Additionally, a new mapping tool called the sticking phase plot is developed to record the transition process of stick-slip motion and intuitively demonstrate bifurcation occurrences and dynamical response transformations. The bifurcation diagrams of the system are obtained, showcasing extraordinary bifurcation phenomena and new nonlinear phenomena such as chaos and sliding bifurcations caused by Border-Collision Bifurcation and Sliding Bifurcations. The importance of the Fixed-Point bifurcation's local and global changes is also observed. The authors employ the LVIM method for accurate and efficient integration of non-smooth systems in numerical simulations.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2022)
Article
Geosciences, Multidisciplinary
John D. Bedford, Daniel R. Faulkner
Summary: The study found that quartz gouge exhibits unstable stick-slip behavior under high σn conditions, while slow-slip is more prevalent under low σn conditions. Localization and instability are mainly promoted by high effective normal stress and small grain size.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Civil
Pablo M. Barlek Mendoza, Daniel Ambrosini, Bibiana M. Luccioni
Summary: This study investigated the maximizing energy dissipation on a seismic damper through a numerical-experimental approach. Theoretical background, experimental studies, and computational models were conducted to analyze the friction ratios. The results indicated the significant impact of friction coefficients on energy dissipation, and proposed intervals for maximizing energy dissipation based on different seismic records.
SMART STRUCTURES AND SYSTEMS
(2021)
Article
Engineering, Mechanical
Liming Zhao, Penghui Cao
Summary: The computational study on the atomic-scale stick-slip friction of monolayer graphene on a copper substrate reveals a strong temperature dependence of friction force and friction mode. The role of Moire superlattices in affecting friction force is significant, especially at different temperatures, leading to changes in friction behavior and transition from athermal to thermally activated friction modes.
EXTREME MECHANICS LETTERS
(2021)
Article
Engineering, Mechanical
Artur Wojcik, Thomas G. Mathia
Summary: This paper analyzes the friction phenomenon of granular cereal materials at low sliding velocities. It is found that the friction force exhibits periodic changes and three characteristic phases are identified. The study confirms the significant influence of velocity and load on the nature of friction force changes.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Kasra Farain, Daniel Bonn
Summary: Regardless of surface roughness or compression, the stress relaxation of microcontacts is the same as that of bulk material. Friction is not always proportional to the contact area. This allows us to predict frictional aging of rough interfaces based on the bulk material properties of two typical polymers: polypropylene and polytetrafluoroethylene.
NATURE COMMUNICATIONS
(2023)
Article
Acoustics
Shunzeng Wang, Ling Hong, Jun Jiang
Summary: The paper presents an analytical method to predict self-excited stick-slip whirling oscillations in rotor/stator rubbing systems with high precision. The analytical solution also provides an eligible approximation for stick-slip whirling oscillations with relatively short slip phases.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Mechanics
G. Rill, T. Schaeffer, M. Schuderer
Summary: The LuGre model is frequently used for analyzing and controlling friction systems. However, it has drawbacks, such as low break-away forces, force rate-dependency, drift problems during sticking, and differences between the pre-defined friction law and the one produced by the LuGre model. These drawbacks are caused by a simplistic and inconsistent modeling of bristle dynamics rather than the model dynamics or its nonlinearity.
MULTIBODY SYSTEM DYNAMICS
(2023)
Article
Engineering, Mechanical
Jinsoo Choi, Hyungjo Seo, Seok Su Sohn, Ho Jang
Summary: This study investigates the stick-slip phenomena at a low-velocity range and explores the effect of brake pad size on friction instability. The results show that smaller pads exhibit higher stick-slip amplitudes within narrower velocity ranges. Friction levels are influenced by the total contact plateau area, while the stick-slip amplitudes are affected by the size of high-pressure plateaus. The pronounced stick-slip with small pads is attributed to the presence of large high-pressure plateaus, which increase static friction.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Physics, Multidisciplinary
Michal Marszal, Ashesh Saha, Krzysztof Jankowski, Andrzej Stefanski
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2016)
Article
Mechanics
Ashesh Saha, Pankaj Wahi, Marian Wiercigroch, Andrzej Stefanski
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2016)
Article
Physics, Multidisciplinary
Michal Marszal, Andrzej Stefanski
Article
Engineering, Chemical
Krzysztof Jankowski, Michal Marszal, Andrzej Stefanski
Article
Mechanics
Anna Karmazyn, Marek Balcerzak, Przemyslaw Perlikowski, Andrzej Stefanski
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2018)
Article
Engineering, Mechanical
Marek Balcerzak, Danylo Pikunov, Artur Dabrowski
NONLINEAR DYNAMICS
(2018)
Article
Engineering, Mechanical
Andrzej Stefanski, Danylo Pikunov, Marek Balcerzak, Artur Dabrowski
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
Article
Engineering, Mechanical
Artur Dabrowski, Marek Balcerzak, Danylo Pikunov, Andrzej Stefanski
NONLINEAR DYNAMICS
(2020)
Article
Engineering, Mechanical
Danylo Pikunov, Andrzej Stefanski
Summary: This paper focuses on the numerical analysis of vibrations induced by friction in an oscillator model, revealing the dynamic behavior of the system response reflected by the friction force and observing some synchronous correlation. Additionally, the coexistence effect of irregular friction force at the contact point of the frictional brush and ground surface with the regular response of the system in the quasi-periodic regime is reported.
TRIBOLOGY INTERNATIONAL
(2022)
Proceedings Paper
Engineering, Civil
Michal Marszal, Andrzej Stefanski
INTERNATIONAL CONFERENCE ON ENGINEERING VIBRATION (ICOEV 2017)
(2018)
Proceedings Paper
Engineering, Civil
Marek Balcerzak, Artur Dabrowski, Andrzej Stefanski, Jerzy Wojewoda
INTERNATIONAL CONFERENCE ON ENGINEERING VIBRATION (ICOEV 2017)
(2018)
Proceedings Paper
Computer Science, Theory & Methods
Marek Balcerzak, Artur Dabrowski, Danylo Pikunov
COMPUTER METHODS IN MECHANICS (CMM2017)
(2018)
Proceedings Paper
Engineering, Multidisciplinary
A. Dabrowski, M. Balcerzak, D. Pikunov
ENGINEERING MECHANICS 2017
(2017)
Article
Acoustics
Sandip Chajjed, Mohammad Khalil, Dominique Poirel, Chris Pettit, Abhijit Sarkar
Summary: This paper reports the generalization of the Bayesian formulation of the flutter margin method, which improves the predictive performance by incorporating the joint prior of aeroelastic modal parameters. The improved algorithm reduces uncertainties in predicting flutter speed and can cut cost by reducing the number of flight tests.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pascal Zeise, Bernhard Schweizer
Summary: Air ring bearings are an improved version of classical air bearings, providing better damping behavior and allowing operation above the linear threshold speed of instability. However, there is a risk of dangerous vibrations in certain rotor systems, which can be addressed by considering ring tilting effects.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Zbynek Sika, Jan Krivosej, Tomas Vyhlidal
Summary: This paper presents a novel design of a compact six degrees of freedom active vibration absorber with six identical eigenfrequencies. The objective is to completely suppress the vibration of a machine structure with six motion components. By utilizing a Stewart platform structure equipped with six active legs, a spatial unifrequency absorber with six identical eigenfrequencies is achieved. The design is optimized using a correction feedback and active delayed resonator feedback.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kai Li, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel light-powered self-oscillating liquid crystal elastomer (LCE) bow that can self-oscillate continuously and periodically under steady illumination. The dynamics of the LCE bow are theoretically investigated and numerical calculations predict its motion regimes. The suggested LCE bow offers potential advantages in terms of simple structure, customizable size, flexible regulation, and easy assembly.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Carmelo Rosario Vindigni, Giuseppe Mantegna, Calogero Orlando, Andrea Alaimo
Summary: In this study, a simple adaptive flutter suppression system is designed to increase the operative speed range of a wing-aileron aeroelastic plant. The system achieves almost strictly passivity by using a parallel feed-forward compensator implementation and the controller parameters are optimized using a population decline swarm optimization algorithm. Numerical simulations prove the effectiveness of the proposed simple adaptive flutter suppression architecture in different flight scenarios.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Nicco Ulbricht, Alain Boldini, Peng Zhang, Maurizio Porfiri
Summary: The quantification of fluid-structure interactions in marine structures is crucial for their design and optimization. In this study, an analytical solution for the free vibration of a bidirectional composite in contact with a fluid is proposed. By imposing continuity conditions and boundary conditions, the coupled fluid-structure problem is solved and applied to sandwich structures in naval construction, offering insights into the effects of water on mode shapes and through-the-thickness profiles of displacement and stress.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shahram Hadian Jazi, Mostafa Hadian, Keivan Torabi
Summary: Non-uniformity and damage are the main focus in studying vibrations of beam elements. An exact closed-form explicit solution for the transverse displacement of a nonuniform multi-cracked beam is introduced using generalized functions and distributional derivative concepts. By introducing non-dimensional parameters, the motion equation and its closed-form solution are obtained based on four fundamental functions. The impact of crack count, location, intensity, and boundary conditions on natural frequency and mode shape is evaluated through numerical study.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Eugenio Tramacere, Marius Pakstys, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Torbjoern A. Lembke
Summary: This paper proposes the experimental stabilization of electrodynamic maglev systems by means of passive components, providing key technological support for the Hyperloop concept of high-speed and sustainable transportation.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pengfei Deng, Xing Tan, He Li
Summary: In this paper, the authors improve the surface morphology method and study the bit-rock interaction model between the rock and the PDC bit, taking into account the impact of blade shape and cutter arrangement. They establish a dynamic model for a deep drilling system equipped with an arbitrary shape PDC bit and propose a stability prediction method. The results show that the shape of the blades and arrangement of the cutters on the PDC bit significantly affect the nonlinear vibration of the drilling system.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Salvador Rodriguez-Blanco, Javier Gonzalez-Monge, Carlos Martel
Summary: In modern LPT designs, the simultaneous presence of forced response and flutter in different operation regimes is unavoidable. Recent evidence suggests that the traditional linear superposition method may be overly conservative. This study examines the flutter and forced response interaction in a realistic low pressure turbine rotor and confirms that the actual response is much smaller than that predicted by linear superposition.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kabilan Baskaran, Nur Syafiqah Jamaluddin, Alper Celik, Djamel Rezgui, Mahdi Azarpeyvand
Summary: This study investigates the impact of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers used in urban air mobility vehicles. The results show that different blade numbers exhibit distinct noise levels, providing valuable insights for further research on propeller noise and aerodynamic performance.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yongbo Peng, Peifang Sun
Summary: This study focuses on the reliability-based design optimization (RBDO) of the tuned mass-damper-inerter (TMDI) system under non-stationary excitations. The performance of the optimized TMDI system is evaluated using probability density evolution analysis. The results demonstrate the technical advantages of TMDI, including high vibration mitigation performance, considerable mass reduction, and less stroke demand.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Guanfu Lin, Zhong-Rong Lu, Jike Liu, Li Wang
Summary: Vision-based measurement is an emerging method that enables full-field measurement with non-contact and high spatial resolution capabilities. This paper presents a single-camera method for measuring out-of-plane vibration of plate structures using motion-parametric homography to capture image variation and displacement response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Bronislaw Czaplewski, Mateusz Bocian, John H. G. Macdonald
Summary: Despite two decades of study, there is currently no model that can quantitatively explain pedestrian-generated lateral forces. This research proposes a foot placement control law based on empirical data to calibrate and generalize the rigid-leg inverted pendulum model (IPM) for predicting lateral structural stability.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Justine Carpentier, Jean-Hugh Thomas, Charles Pezerat
Summary: This paper proposes an improved method for the identification of vibration sources on a car window using the corrected force analysis technique. By redefining inverse methods in polar coordinates, more accurate results can be obtained.
JOURNAL OF SOUND AND VIBRATION
(2024)