Journal articles: 'Stick-slip'

1

Marra, John. "Stick-Slip." Limnology and Oceanography Bulletin 23, no. 4 (November 2014): 91. http://dx.doi.org/10.1002/lob.201423491.

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Blackburn, L. "STICK-SLIP ACOUSTICS." Journal of Experimental Biology 210, no. 20 (October 5, 2007): ii. http://dx.doi.org/10.1242/jeb.012526.

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Moirot, Franck, Quoc-Son Nguyen, and Abdelbacet Oueslati. "An example of stick–slip and stick–slip–separation waves." European Journal of Mechanics - A/Solids 22, no. 1 (January 2003): 107–18. http://dx.doi.org/10.1016/s0997-7538(02)00004-9.

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Wang, Yanzhao, Guobin Xu, Zhicheng Liu, and Deming Yang. "Experimental Study on the Slip–Stick Vibration of Plane Gate." Water 16, no. 6 (March 21, 2024): 912. http://dx.doi.org/10.3390/w16060912.

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The slip–stick vibration intensity of a plane gate is usually large, which often brings serious safety risks to itself and the auxiliary structure. The slip–stick vibration of a plane gate is investigated using an experimental model test. The test conditions mainly focus on the gate-closing and gate-opening processes in transient flow. Based on the results, comparison diagrams of the slip–stick vibration response versus the external fluid excitation are constructed. The intensity and period of the slip–stick vibration both gradually increase with the opening degree of the plane gate decreasing. The frequency of slip–stick vibration is consistent with the natural frequency of the equivalent system, indicating that the slip–stick vibration is a nonlinear self-excited vibration. The slip–stick vibration and fluid excitation acting on the plane gate have a significant difference in response intensity and dominant frequency. In addition, a difference in gate support material can have a significant effect on the slip–stick vibration intensity. Therefore, the friction factor between gate support and track, rather than the fluid excitation, is the direct cause of slip–stick vibration, which can further prove that the slip–stick vibration is a friction-induced vibration caused by the gate’s active motion, enriching the theory of the gate’s vibration.

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Fuadi, Zahrul. "Analisis pengaruh perbedaan koefisien gesekan statis dan kinetis terhadap gerakan stick-slip menggunakan bahan viskoelastis." Jurnal Teknik Mesin Indonesia 11, no. 1 (March 5, 2018): 51. http://dx.doi.org/10.36289/jtmi.v11i1.52.

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Gerakan stick-slip pada suatu sistem mekanik dapat menyebabkankerugian seperti getaran yang berlebihan yang dapat menyebabkanhilangnya presisi ataupun aus yang berlebihan. Gerakan stick-slip dipengaruhi oleh berbagai parameter antara lain adalah perbedaan antara nilai koefisien gesekan statis dan kinetis, ❍s-❍k. Dalam penelitian ini, dilakukan simulasi dan uji gesekan untuk melihat pengaruh parameter ❍s-❍k terhadap gerakan stick-slip. Tujuan dari penelitian ini adalah untuk melihat pengaruh parameter ❍s-❍k secara kualitatif terhadap terjadinya gerakan stick-slip. Hasil pengujian menunjukkan bahwa amplitudo gerakan stick- slip dipengaruhi oleh besarnya nilai ❍s-❍k. Semakin besar nilai ❍s-❍k makasemakin besar amplitudo gerakan stick-slip yang terjadi.

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Sergienko, Olga V., Douglas R. MacAyeal, and Robert A. Bindschadler. "Stick–slip behavior of ice streams: modeling investigations." Annals of Glaciology 50, no. 52 (2009): 87–94. http://dx.doi.org/10.3189/172756409789624274.

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AbstractA puzzling phenomenon of ice-stream flow is the stick–slip motion displayed by Whillans Ice Stream (WIS), West Antarctica. In this study we test the hypothesis that the WIS stick–slip motion has features similar to those of other known stick–slip systems, and thus might be of the same origin. To do so, we adapt a simple mechanical model widely used in seismology to study classic stick–slip behavior observed in tectonic faults, in which the difference between static and dynamic friction allows for the generation and spatial propagation of abrupt slip events. We show how spatial variability in friction properties, as well as a periodic forcing intended to mimic the effect of tides, can reproduce the observed duration and periodicity of stick–slip motion in an ice stream. An intriguing aspect of the association of WIS with mechanical stick–slip oscillators is that the onset of stick–slip cycling from a condition of permanent slip appears to be associated with the reduction in overall speed of WIS. If this association is true, then stick–slip behavior of WIS is a transitional phase of behavior associated with the ice stream's recent deceleration.

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Ejike, Chinedu, Immanuel Frimpong Obuobi, Simon Avinu, Khizar Abid, and Catalin Teodoriu. "Investigation and Analysis of Influential Parameters in Bottomhole Stick–Slip Calculation during Vertical Drilling Operations." Energies 17, no. 3 (January 27, 2024): 622. http://dx.doi.org/10.3390/en17030622.

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The critical factors that affect bottomhole stick–slip vibrations during vertical drilling operations are thoroughly investigated and analyzed in this research. Influential factors, such as rotation speed, weight on bit (WOB), bottom hole assembly (BHA) configuration, and formation properties, were studied in order to understand their part in the stick–slip phenomena. The analysis is based on a thorough review of previous research conducted on stick–slip drilling vibrations. A mathematical model was created that not only explains axial vibrations but also includes the torsional vibrations present in stick–slip occurrences, which helps with understanding the stick–slip phenomena better. This model can be used as an analytical tool to predict and evaluate the behavior of drilling systems under various operational circumstances. Furthermore, two drilling tests using a WellScan simulator were performed to validate the research findings and assess mitigation techniques’ viability. These test scenarios reflect the stick–slip vibration-producing situations, allowing us to test mitigation strategies. The finding of this study shows the effectiveness of two tactics for reducing stick–slip vibrations. First was the reduction of WOB, which successfully lowered the occurrence of stick–slip vibrations. The second was the increase in the rotation speed, which helped to control the stick–slip problem and increased the drilling speed. This study explains the complex dynamics of stick–slip vibrations during vertical drilling and offers practical, tried-and-true methods for reducing their adverse effects on drilling operations.

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Zhang, Nong, Jin Zhang, and Yu Wang. "Experimental Verification of Stick–slip Motion between Two Rolling Contact Surfaces." Advanced Materials Research 230-232 (May 2011): 1362–66. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.1362.

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In this paper, a simplified drive train model with stick-slip nonlinearity is introduced for the study of stick-slip motion between the driving tires and the flywheel. Laboratory based tests are designed to investigate stick-slip motion of the tires contacting with the flywheels which simulate vehicle inertia. A description of the powertrain test rig, the associated instrumentation, the test inputs and operation conditions are provided. The experimental results are similar to those obtained from the numerical analysis using the introduced drive train model. They verify the validity of the stick-slip model, and demonstrate that stick-slip occurred frequently between the driving tires and the flywheels. The normal tire force applied to the flywheel is one of the key parameters affecting stick-slip motion. And there exists an upper limit beyond which the tire and flywheel will stick together at all time. It is found that the frequency of stick-slip motion is independent of normal tire force and is close to the natural frequency of the tire-flywheel contacting power transmitting system.

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GALVANETTO, U., S. R. BISHOP, and L. BRISEGHELLA. "MECHANICAL STICK-SLIP VIBRATIONS." International Journal of Bifurcation and Chaos 05, no. 03 (June 1995): 637–51. http://dx.doi.org/10.1142/s0218127495000508.

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In this paper we consider the behavior of a two degree-of-freedom mechanical system incorporating static and dynamic friction, assumed to be a decreasing function of the relative sliding velocity. The model consists of two blocks linked by springs, which ride upon a moving belt. The dynamics of the system are described within a four-dimensional phase space. A three-dimensional Poincaré map is discussed together with a simpler one-dimensional map of a scalar variable. Considering the one-dimensional map it is possible to study all the attractors of the system for small belt velocities including the construction of one-dimensional basins of attraction. Thus, albeit in a partial zone of the control-phase space, the global dynamics of the system can be characterized displaying periodic, quasi-periodic and chaotic oscillations.

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Richetti, P., C. Drummond, J. Israelachvili, M. In, and R. Zana. "Inverted stick-slip friction." Europhysics Letters (EPL) 55, no. 5 (September 2001): 653–59. http://dx.doi.org/10.1209/epl/i2001-00109-0.

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Gao, Chao, Doris Kuhlmann-Wilsdorf, and David D. Makel. "Fundamentals of stick-slip." Wear 162-164 (April 1993): 1139–49. http://dx.doi.org/10.1016/0043-1648(93)90133-7.

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Capone, Giuseppe, Vincezo D'agostino, Sergio della Valle, and Domenico Guida. "Stick-slip instability analysis." Meccanica 27, no. 2 (June 1992): 111–18. http://dx.doi.org/10.1007/bf00420589.

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Evans, Jonathan D. "Stick-slip and slip-stick singularities of the Phan-Thien–Tanner fluid." Journal of Non-Newtonian Fluid Mechanics 199 (September 2013): 12–19. http://dx.doi.org/10.1016/j.jnnfm.2013.06.001.

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Li, Xiao Guang, Ping Zhao, and Jie Zhong. "Application Research of Stick-Slip Mechanism on MW Wind Turbine Yaw System." Applied Mechanics and Materials 220-223 (November 2012): 463–68. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.463.

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The “stick-slip” motion or creep phenomenon is often observed in MW wind turbine yaw system. Yam system stick-slip coupling phenomenon was analyzed, and stick-slip coupling kinematic model was established and simulated by Simulink. The influence of torsional stiffness, friction coefficient difference, rotating speed, damping ratio and tightening torque on system was researched. Main measures for elimination of stick-slip coupling phenomenon were given through theoretical analysis and simulation calculation.

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Meng, Dejian, Lijun Zhang, Xiaotian Xu, Yousef Sardahi, and Gang S. Chen. "Sensing and Quantifying a New Mechanism for Vehicle Brake Creep Groan." Shock and Vibration 2019 (February 26, 2019): 1–10. http://dx.doi.org/10.1155/2019/1843205.

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This paper investigates the creep groan of a vehicle’s brake experimentally, analytically, and numerically. Experimentally, the effects of acceleration on caliper and strut, noise, brake pressure, and tension are measured. The results show that the measured signals and their relevant spectra broadly capture the complex vibrations of creep groan. This includes the simple stick-slip, severe stick-slip vibrations/resonances, multiple harmonics, half-order harmonics; stick-slip-induced impulsive vibrations, steady/unstable vibrations, and their transitions. Analytically, a new mathematical model is presented to capture the unique features of half-order harmonics and the connections to fundamental stick-slip/resonant frequency and multiple harmonics. The analytical solution and the experimental results show that the vibro-impact of the brake pad-disc system can be triggered by severe stick-slip vibrations and is associated with instable, impulsive stick-slip vibration with wideband. The induced stick-slip vibro-impact can evolve into a steady and strong state with half-order, stick-slip fundamental, and multiple-order components. This new mechanism is different from all previously proposed mechanisms of creep groan in that we also view some type of creep groan as a stick-slip vibration-induced vibro-impact phenomenon in addition to conventional stick-slip phenomena. The new mechanism comprehensively explains the complex experimental phenomena reported in the literature. Numerically, the salient features of phase diagrams of instable stick-slip and vibro-impact are examined by using a seven-degree-of-freedom brake system model, which shows that the phase diagrams of the dynamics of creep groan with and without vibro-impact are substantially different. The phase diagram of the dynamics with vibro-impact is closer to the experimental results. In contrast to existing mechanisms, the proposed new mechanism encompasses the instable stick-slip nature of creep groan and elaborates the inherent connections and transition of the spectrogram. The new knowledge can be used to attain critical improvements to brake noise and vibration analysis and design. By applying the proposed new model in addition to existing models, all experimental phenomena in creep groan are elaborated and quantified.

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Wang, Hao, Xuan Xie, Xijun Hua, Bifeng Yin, Hang Du, Sheng Xu, and Bai Jing Qiu. "The effect of laser surface texturing to inhibit stick-slip phenomenon in sliding contact." Advances in Mechanical Engineering 11, no. 9 (September 2019): 168781401987463. http://dx.doi.org/10.1177/1687814019874635.

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Stick-slip phenomenon in some mechanical structures, especially in machine tools, should be eliminated or inhibited, otherwise the vibration will occur and the position error will inevitably be obtained. In this study, different kinds of surface textures were carried out on the lower samples of the pin-on-disk contact. The starting process of the machine tools was simulated on an Rtec-Multi-Function Tribometer. The stick-slip phenomenon was observed in each kind of samples. However, the stick-slip phenomenon of smooth sample is larger than that of the textured samples. The bulge-textured surface shows excellent anti-stick-slip effect, and the critical stick-slip speed of bulge-textured surface is 95.9% lower than that of the smooth surface. Simultaneously, the anti-stick-slip effect of bulge-textured surface is superior to that of the dent-shaped texturing surface. What’s more, when the amount of lubricating oil is 15 mL, the standard deviation values of friction coefficient and critical speed of stick-slip phenomena (rotational speed when the standard deviation of friction coefficient is abrupt) are the lowest at different rotational speeds. It can be predicted that the bulge textures and adequate amount of lubricating oil (15 mL) can eliminate stick-slip phenomenon when processed in the surface of the machine tool because the bulge textures and adequate amount of lubricating oil can improve frictional state effectively and avoid the slip of the contact surface.

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Wang, Chao, Wenbo Chen, Zhe Wu, Jun Li, and Gonghui Liu. "Stick–Slip Characteristics of Drill Strings and the Related Drilling Parameters Optimization." Processes 11, no. 9 (September 18, 2023): 2783. http://dx.doi.org/10.3390/pr11092783.

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To eliminate or reduce stick–slip vibration in torsional vibration of the drilling string and improve the rate of penetration (ROP), a stick–slip vibration model of the drilling string considering the ROP was established based on the multidimensional torsional vibration model of the drilling string. The model was verified by simulation analysis. The characteristics of the drilling string stick–slip vibration in the three stages of stationary, slip, and stick were analyzed. This paper investigated the influence of rotary torque, rotary speed, and weight on bit (WOB) on stick–slip vibrations in the drill string. Based on this, the relationship between the drilling parameters and ROP was established. Drilling parameter optimization was completed for soft, medium-hard, and hard formations. Results showed that appropriately increasing torque and decreasing WOB can reduce or even eliminate stick–slip vibrations in the drill string and increase the ROP. The parameter optimization increased the ROP by 11.5% for the soft formation, 13.7% for the medium-hard formation, and 14.3% for the hard formation. The established drill string stick–slip vibration model provides theoretical guidance for optimizing drilling parameters in different formations.

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Babici, Laura Mariana, Andrei Tudor, and Jordi Romeu Garbi. "Acoustic emission at the wheel-rail contact with micro-slip and stick-slip." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (February 1, 2023): 1477–84. http://dx.doi.org/10.3397/in_2022_0205.

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The paper aims to analyse the occurrence of acoustic emission at the wheel-rail contact during micro-slip. The experimental model allows the contact pressure variation (MPa..GPa) and the sliding speed (0.01 to 0.5 mm/s) specific to the wheel-rail contact. It is determined experimentally and theoretically the appearance of the stick-slip phenomenon at the Hertzian contact of cylinder type (fixed-wheel specimen) - plane (mobile with very low speed - rail specimen). The experimental stand simultaneously measures the normal force, the friction force and the acoustic emission at different contact pressures, sliding speeds and rigidities of the wheel specimen fixing system. The specimens are made of UIC standard materials used in the driving wheels and rails. The stick-slip phenomenon occurs at low micro-slip speeds and normal bending stiffness. Experimentally, it is found that the jumps specific to the stick-slip phenomenon( friction coefficient-COF) are accompanied by the acoustic emission (AE) at the cylinder-plane interface. The energy emitted by AE (WAE) is correlated with the energy consumed by friction during the stick-slip period (WCOF). The theoretical model regarding the stick-slip phenomenon of the Hertzian contact with slip specific to the experimental stand allows the analysis of the stability of the stick-slip movement.

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Yan, Baoyong, Jialin Tian, Xianghui Meng, and Zhe Zhang. "Stick–Slip Vibration Characteristics Study of the Drill String Based on PID Controller." Energies 16, no. 23 (December 4, 2023): 7902. http://dx.doi.org/10.3390/en16237902.

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In order to address the issue of drill string stick–slip vibration, which leads to drill bit wear and reduces the drilling velocity, we conducted a study on the characteristics of stick–slip vibration using a proportional-integral-derivative (PID) controller. By applying the principles of rigid body mechanics, we established a two-degree-of-freedom torsional dynamics equation and derived the first-order differential dynamics equation for the drill string. Subsequently, we designed a PID controller and obtained an equation for the control of stick–slip vibration. The research findings indicate that variations in the difference between the static and dynamic friction coefficients directly impact the nature of the limit cycles in the phase plane. As this difference decreases, the limit cycle narrows and the stick–slip vibrations weaken progressively. When the static and dynamic friction coefficients are equalized, no stick–slip vibrations occur within the drill string. The implementation of PID control effectively manages stick–slip vibrations in the drill string, with greater efficiency observed in controlling the turntable velocity compared to the drill bit velocity. This research provides valuable insights for the development of control strategies aimed at mitigating stick–slip vibrations in drilling engineering applications, thereby facilitating the efficient and safe extraction of oil and gas resources.

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Zhong, Bowen, Liguo Chen, Zhenhua Wang, and Lining Sun. "A Novel Trans-Scale Precision Positioning Stage Based on the Stick-Slip Effect." International Journal of Intelligent Mechatronics and Robotics 2, no. 2 (April 2012): 1–14. http://dx.doi.org/10.4018/ijimr.2012040101.

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This article focuses on developing a novel trans-scale precision positioning stage based on the stick-slip effect. The stick-slip effect is introduced and the rigid kinematics model of the stick-slip driving is established. The forward and return displacement equations of each step of the stick-slip driving are deduced. The relationship of return displacement and the acceleration produced by friction are obtained according to displacement equations. Combining with LuGre friction model, the flexible dynamics model of the stick-slip driving is established and simulated by using Simulink software. Simulation results show that the backward displacement will reduce with the acceleration of the slider produced by dynamic friction force, the rigid kinematics model is also verified by simulation results which are explained in further detail in the article.

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Zhong, Bo Wen, Zhen Hua Wang, Zi Qi Jin, and Li Ning Sun. "The Study on the Effect of Driving Parameters on the Movement of the Stick-Slip Driving Stage." Key Engineering Materials 620 (August 2014): 212–19. http://dx.doi.org/10.4028/www.scientific.net/kem.620.212.

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In this paper, the relationship of the driving parameters and the movement of stick-slip driving was studied. Firstly, the research status and the principle of stick-slip driving was introduced. Secondly, the math model of the every step displacement and velocity of stick-slip driving was built. By using mathematical models, the relationship curve of the every step displacement and the step time was received through the simulation in Matlab software. Furthermore, in corroboration of the math model, the prototype was designed and the experiment system was built. From the testing of stick-slip prototype, the step displacement in every step time was tested 20 times and the relationship curve of the average every step displacement and step time was obtained. The simulation results are validated by the testing results and the method of reducing the time step to adjust the stick-slip driving step displacement and velocity were proved. In the future, a greater drive power should be researched for improving the movement performance of the stick-slip driving.

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Maegawa, Satoru, Xiaoxu Liu, and Fumihiro Itoigawa. "Discussion of Stick-Slip Dynamics of 2DOF Sliding Systems Based on Dynamic Vibration Absorbers Analysis." Lubricants 10, no. 6 (June 2, 2022): 113. http://dx.doi.org/10.3390/lubricants10060113.

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In this study, we discussed the occurrence condition stick-slip model based on a 2DOF system, in which a 1DOF system model commonly used in stick-slip analysis was attached on an elastic foundation. Specifically, the effects of the mass, stiffness, and damping coefficient of the elastic foundation on the occurrence and non-occurrence of stick-slip were investigated. It was found that when the elastic foundation parameters were determined based on the optimal parameter tuning method of the dynamic vibration absorber (DVA) theory, the range of stick-slip occurrences reduced compared to the sliding system without the elastic foundation.

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Bilisik, Kadir, and Bekir Yildirim. "Stick-slip properties of single and multiple yarn pull-out in dry and softening treated polyester satin woven fabrics in boundary region." International Journal of Clothing Science and Technology 26, no. 1 (February 25, 2014): 67–95. http://dx.doi.org/10.1108/ijcst-02-2013-0017.

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Purpose – The aim of this study was to understand the stick-slip properties of single and multiple yarn pull-out in dry and treated polyester satin woven fabric in boundary regions. Design/methodology/approach – Polyester satin pattern woven fabric was used to conduct the pull-out tests in order to examining the kinetic region of the force-displacement curve. Data generated from this research help the authors to obtain stick-slip force and accumulative retraction force. Findings – It was found that stick-slip force and accumulative retraction force depend on the number of pulled ends in the fabric, fabric sample dimensions and softening treatments. Stick-slip forces of polyester satin fabric in the multiple yarn pull-out test were higher than those of the single yarn pull-out test. Stick-slip force in single and multiple yarn pull-out tests in the dry polyester satin fabric was generally higher than those of the softening treated polyester satin fabric. In addition, the warp directional single and multiple yarn stick-slip and accumulative retraction forces in the dry and softening treated polyester fabrics were generally higher than those in the weft direction in the fabric edges due to fabric density. On the other hand, the amount of stick-slip force was related to the number of interlacement points in the fabric, whereas the amount of accumulative retraction force was related to fabric structural response. Originality/value – The mechanism of stick-slip and accumulative retraction force of dry-treated polyester satin pattern woven fabrics were explained. This research could be valuable for development of multifunctional fabrics in technical textiles and ballistic.

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Chuang, Yun-Ju, Ho Chang, Yin-Tung Sun, and Tsing-Tshih Tsung. "Stick–slip in hand guidance of palletizing robot as collaborative robot." International Journal of Advanced Robotic Systems 19, no. 5 (September 1, 2022): 172988062211311. http://dx.doi.org/10.1177/17298806221131138.

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Stick–slip is a challenging problem in palletizing robots and constitutes one of the main problems in precision positioning control. This study analyzed the stick–slip of a four-degree-of-freedom ceiling-mounted hand-guiding collaborative robot in a working space. A brief perspective on the focus of the experimental design is presented on the stick–slip friction of a palletizing robot’s hand guidance as a collaborative robot. The palletizing robot typically has a simple mechanical structure but possesses over 16 bearings to constrain the motion of the dual-parallelogram linkage mechanism. First, the hand-guiding force was successfully measured. Second, an image model was built based on the obtained measurement results. Third, the stick–slip results for the working space were analyzed using an image model. Finally, related conclusions and recommendations are provided for precision positioning control. A significant aspect of this study is identifying the hand-guiding force in the working space of a ceiling-mounted collaborative robot. Stick–slip in hand guiding is a critical issue and is therefore important for collaborative robot users. The main contribution of this study is developing a feasible method for helping researchers understand where stick–slip occurs.

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Li, Z. X., Q. J. Cao, and A. Léger. "Threshold of Multiple Stick-Slip Chaos for an Archetypal Self-Excited SD Oscillator Driven by Moving Belt Friction." International Journal of Bifurcation and Chaos 27, no. 01 (January 2017): 1750009. http://dx.doi.org/10.1142/s0218127417500092.

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In this paper, we investigate the multiple stick-slip chaotic motion of an archetypal self-excited smooth and discontinuous (SD) oscillator driven by moving belt friction, which is constructed with the SD oscillator and the classical moving belt. The friction force between the mass and the belt is modeled as a Coulomb friction for this system. The energy introduction or dissipation during the slip and stick modes in the system is analyzed. The analytical expressions of homoclinic orbits of the unperturbed SD oscillator are derived by using a special coordinate transformation without any pronominal truncation to retain the natural characteristics, which allows us to utilize the Melnikov’s method to obtain the chaotic thresholds of the self-excited SD oscillator in the presence of the damping and external excitation. Numerical simulations are carried out to demonstrate the multiple stick-slip dynamics of the system, which show the efficiency of the prediction for stick-slip chaos of the perturbed self-excited system. The results presented herein this paper demonstrate the complicated dynamics of stick-slip periodic solutions, multiple stick-slip chaotic solutions and also coexistence of multiple solutions for the perturbed self-excited SD oscillator.

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Bilisik, Kadir. "Effect of Fabric Weave on Stick-Slip Properties of Woven Fabrics." Autex Research Journal 14, no. 3 (September 30, 2014): 205–17. http://dx.doi.org/10.2478/aut-2014-0017.

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Abstract The aim of this study was to understand the stick-slip properties of dry polyester plain, ribs and satin woven fabric weaves. It was found that the amount of stick-slip force was related to the number of interlacement points in the fabric, whereas the amount of accumulative retraction force was related to fabric structural response. Stick-slip force and accumulative retraction force depend on fabric weave, fabric density, the number of pulled ends in the fabric and fabric sample dimensions. The weft directional single and multiple yarn stick-slip and accumulative retraction forces of dry plain fabrics in fabric edge and centre regions were higher than those in the satin fabric due to fabric weave. In addition, the warp directional single and multiple yarn stick-slip and accumulative retraction forces in the meso-cell-1 to the meso-cell-6 of dry wide and long satin fabric in fabric edge were higher than those in the weft direction due to fabric density. Stick-slip and accumulative retraction forces of polyester fabric in the multiple yarn pull-out test were higher than those of the single yarn pull-out test.

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Fuadi, Zahrul, and Koshi Adachi. "Stiffness Effect on Low-Frequency Stick-Slip Motion Generated on a Simple Caliper-Slider Experimental Model." Applied Mechanics and Materials 758 (April 2015): 57–62. http://dx.doi.org/10.4028/www.scientific.net/amm.758.57.

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This paper discusses the occurrence and non occurrence of low-frequency stick-slip motion on a simple caliper-slider experimental model. The analysis focused on the relationship between stiffness, i.e. contact stiffness and structure’s stiffness, and the generation of stick-slip motion. The occurrence of stick-slip motion is determined by analyzing the frequency characteristic of resulted vibration acceleration at the beginning of sliding which is resulted from a simultaneous application of force in tangential direction and slow release of force in normal direction. The results show that the occurrence and non occurrence of stick-slip motion can be classified into three regions according to the parameter of stiffness ratio, i.e. non occurrence region, mixed region, and occurrence region. The stiffness ratio Sr, the ratio of contact stiffness Kc to structure’s stiffness Ks, of 40 is found to be critical for the low-frequency stick-slip generation in this experimental model.

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Lin, Yao-Qun, and Yu-Hwa Wang. "Stick-Slip Vibration of Drill Strings." Journal of Engineering for Industry 113, no. 1 (February 1, 1991): 38–43. http://dx.doi.org/10.1115/1.2899620.

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The stick-slip vibration is introduced as a new mechanism to explain the large amplitude torsional oscillation of the drill strings in oil and gas well drillings. A record of field data is identified and simulated according to the new mechanism. The analytical results derived from the numerical simulation agree with the field data with 95.6 percent accuracy. The physical phenomenon of the stick-slip vibration of drill string is explained by initiating a phase trace in the phase plane. The beating phenomenon in drilling is interpreted in terms of stick-slip vibration. The effects of viscous damping, rotary speed and natural frequency on the stick-slip vibration are discussed.

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Wang, Baojin, Zhongyang Wang, and Fushen Ren. "Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well." Shock and Vibration 2020 (July 22, 2020): 1–14. http://dx.doi.org/10.1155/2020/8831111.

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Stick-slip is very harmful to the service life of drillstring. The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model. The drillstring-borehole impact and friction, fluid-structure interaction, bit-rock interaction, and gravity are considered in this model. The influence of axial and torsional excitation on stick-slip is analyzed. The nonlinear motion predicted by the model is consistent with the observation results in the experiments. The research shows that the fluctuation amplitude of the bit angular velocity also increases along with the increase of driving angular velocity (torsional excitation). However, both the ratio of the maximum angular velocity of the stick-slip vibration and the fluctuation of the angular velocity are continuously reduced. Meanwhile, the strength of the stick-slip vibration has a tendency to slow down. As the axial load (axial excitation) increases, the fluctuation of the maximum angular speed of the stick-slip vibration does not change significantly, but the smaller load causes a smaller stick duration.

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30

Jeong, Sung Hoon, Jung Min Park, and Young Ze Lee. "Transition of Friction and Wear by Stick-Slip Phenomenon in Various Environments under Fretting Conditions." Key Engineering Materials 321-323 (October 2006): 1344–47. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.1344.

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The fretting wear arises when contacting surfaces undergo oscillatory tangential displacement of small amplitude. Depending on the degree of stick and slip there are three kinds of the contact motions, such as gross-slip, partial-slip and stick-slip. The fretting damage occurs most severely when the transition from gross-slip to partial-slip happens. In this paper, the transitions of friction and wear under fretting were investigated by ball-on-disk wear tests in various environments, which were dry friction of air and nitrogen, and wet friction of mineral oil and engine oil. The transition from partial-slip to stick-slip firstly occurred in nitrogen environment, and then in air. Later, the transition occurred at higher load in mineral oil, and then lastly in engine oil.

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31

Karachevtseva, Iuliia, Arcady V. Dyskin, and Elena Pasternak. "The Cyclic Loading as a Result of the Stick-Slip Motion." Advanced Materials Research 891-892 (March 2014): 878–83. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.878.

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We investigate the influence of oscillating normal force on the frictional sliding. Frictional sliding in the case of a simple mass-spring model of Burridge and Knopoff type demonstrates stick-slip even when the friction coefficient is constant. Oscillations of the normal force in this case do not produce noticeable changes in the stick-slip sliding mode. A completely different picture is observed when the oscillations of normal force are applied to the system, which is in the state of steady sliding. In this case the normal oscillations turn the steady sliding into stick slip. A special case is observed when the normal force oscillates with the eigen frequency of the stick-slip motion. Then, no matter how small the amplitude of oscillations is the system reaches the same final stick-slip regime. The time required to reach this limiting regime is inversely proportional to the amplitude of oscillations of the normal force.

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Leine, R. I., D. H. van Campen, and W. J. G. Keultjes. "Stick-slip Whirl Interaction in Drillstring Dynamics." Journal of Vibration and Acoustics 124, no. 2 (March 26, 2002): 209–20. http://dx.doi.org/10.1115/1.1452745.

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This paper attempts to explain the complicated behavior of oilwell drillstring motion when both torsional stick-slip and lateral whirl vibration are involved. It is demonstrated that the observed phenomena in experimental drillstring data could be due to the fluid forces of the drilling mud. A Stick-slip Whirl Model is presented which consists of a submodel for the whirling motion and a submodel for the stick-slip motion, both as simple as possible. The Stick-slip Whirl Model is a simplification of a drillstring confined in a borehole wall with drilling mud. The model is as simple as possible to expose only the basic phenomena but is discontinuous. Bifurcation diagrams of this discontinuous model for varying rotation speeds reveal discontinuous bifurcations. The disappearance of stick-slip vibration when whirl vibration appears is explained by bifurcation theory. The numerical results are compared with the experimental data from a full-scale drilling rig.

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Li, Kangjie, Beta Yuhong Ni, and J. C. M. Li. "Stick-slip in the scratching of styrene-acrylonitrile copolymer." Journal of Materials Research 11, no. 6 (June 1996): 1574–80. http://dx.doi.org/10.1557/jmr.1996.0197.

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Stick-slip process occurred during the scratch test of styrene-acrylonitrile copolymer. For the first time, a bamboo-like morphology of the scratch track corresponding to the stick-slip phenomenon was observed. A “joint” was formed during the stick stage and during slip a uniform “stem” was made. The period and amplitude of the stick-slip both increase with the vertical load and decrease with the driving speed. A theoretical model is constructed based on the stiffness of the system and the plastic deformation of polymer both in the vertical and horizontal directions. The model assumes no distinction between the coefficients of static and kinetic friction and gives quantitatively consistent results with experiments.

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Wittmaack, Martin, Markus André, and Jürgen Molter. "Analyse von Einflussparametern auf den Stick-Slip-Effekt mittels Tribometerversuchen und FE-Simulation." Tribologie und Schmierungstechnik 69, no. 1 (March 8, 2022): 5–14. http://dx.doi.org/10.24053/tus-2022-0002.

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Brake fluids lubricate dynamic seals in automotive brake systems. Depending on the fluid, such seals tend to show a stick-slip effect, which may cause disturbing squeal noises. In order to avoid such stick-slip-noise in future systems, it is required to characterize and rate the frictional behavior of different brake fluids in an appropriate way. This paper presents a tribometer test that enables to investigate the stick-slip-effect depending on the brake fluid. For an objective evaluation, an indicator value is introduced. Furthermore, this paper presents a dynamic friction model on basis of the Stribeck-curve that allows visualization and detailed investigation of the stick-slip-effect within finite element computation.

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Wang, Yong, Hongjian Ni, Yiliu (Paul) Tu, Ruihe Wang, Xueying Wang, Heng Zhang, Jiaxue Lyu, and Hongqiao Xie. "Experimental Study on Axial Impact Mitigating Stick-Slip Vibration with a PDC Bit." Shock and Vibration 2021 (February 5, 2021): 1–8. http://dx.doi.org/10.1155/2021/8897283.

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Stick-slip vibration reduces the drilling rate of penetration, causes early wear of bits, and threatens the safety of downhole tools. Therefore, it is necessary to study suppression methods of stick-slip vibration to achieve efficient and safe drilling. Field tests show that the use of downhole axial impactors is helpful to mitigate stick-slip vibration and improve rock-breaking efficiency. However, there are many deficiencies in the study of how axial impact load affects stick-slip vibration of a PDC bit. In this paper, based on the two-degrees-of-freedom spring-mass-damper model and similarity theory, a laboratory experiment device for suppressing stick-slip vibration of a PDC bit under axial impact load has been developed, and systematic experimental research has been carried out. The results show that the axial impact force can suppress the stick-slip vibration by reducing the amplitude of weight on bit and torque fluctuations and by increasing the main frequency of torque. The amplitude of impact force affects the choice of the optimal back-rake angle. The impact frequency is negatively correlated with the fluctuation amplitude of the rotary speed. When the impact frequency is greater than 100 Hz, the fluctuation amplitude of the rotary speed will not decrease.

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36

Challamel, Noël, Hédi Sellami, and Luc Gossuin. "Stick-slip en forage pétrolier." Revue Française de Génie Civil 4, no. 6 (January 2000): 733–52. http://dx.doi.org/10.1080/12795119.2000.9692690.

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Wu-Bavouzet, F., J. Clain-Burckbuchler, A. Buguin, P. G. De Gennes†, and F. Brochard-Wyart. "Stick-Slip: Wet Versus Dry." Journal of Adhesion 83, no. 8 (September 27, 2007): 761–84. http://dx.doi.org/10.1080/00218460701586178.

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Fraaije, J. G. E. M., M. Cazabat, Xin hua, and A. M. Cazabat. "Dynamics of stick-slip jumps." Colloids and Surfaces 41 (January 1989): 77–86. http://dx.doi.org/10.1016/0166-6622(89)80043-5.

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39

Umbanhowar, P., and K. M. Lynch. "Optimal Vibratory Stick-Slip Transport." IEEE Transactions on Automation Science and Engineering 5, no. 3 (July 2008): 537–44. http://dx.doi.org/10.1109/tase.2008.917021.

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Salcudean, S. E., and T. D. Vlaar. "On the Emulation of Stiff Walls and Static Friction With a Magnetically Levitated Input/Output Device." Journal of Dynamic Systems, Measurement, and Control 119, no. 1 (March 1, 1997): 127–32. http://dx.doi.org/10.1115/1.2801204.

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This technical brief addresses issues of mechanical emulation of stiff walls and stick-slip friction with a 6-DOF magnetically levitated joystick. In the case of stiff wall emulation, it is shown that the PD control implementation commonly used severely limits achievable wall damping and stiffness. It is also shown that the perceived surface stiffness can be increased without loss of stability by applying a braking force pulse when crossing into the wall. For stick-slip friction, Karnopp’s model was implemented using a PD controller within the stick friction threshold. Even though the PD controller allows some motion during the stick phase, the haptic feedback provided is remarkably similar to stick-slip friction.

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Zhang, Huidong, Xinqun Zhu, Zhongxian Li, and Shu Yao. "Displacement-dependent nonlinear damping model in steel buildings with bolted joints." Advances in Structural Engineering 22, no. 5 (October 8, 2018): 1049–61. http://dx.doi.org/10.1177/1369433218804321.

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The stick–slip phenomenon is commonly found at structural connections in steel buildings. It is a major damping mechanism in a structure with bolted joints and makes a significant contribution to the total structural damping. This article reviews the stick–slip damping model of an elastic single-degree-of-freedom system with one stick–slip component. It is observed that the damping ratios of the system with the stick–slip mechanism first quickly increase when experiencing a very small displacement and then slowly decrease. After the number of activated slip surfaces is assumed to be a linear function related to the structural displacement, the equivalent damping ratios of a structural system with numerous stick–slip components are derived. However, this displacement-dependent damping model is very difficult to be used for a structural dynamic analysis due to its inherent complexity. Therefore, a new displacement-dependent damping model for a structural dynamic analysis is proposed based on the viscous damping. A high-rise steel moment resisting frame with bolted joints subjected to an earthquake ground motion is taken as an example to verify the proposed method.

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Zhuo, Yan-Qun, Yanshuang Guo, Shunyun Chen, and Yuntao Ji. "Laboratory study on the effects of fault waviness on granodiorite stick-slip instabilities." Geophysical Journal International 221, no. 2 (February 18, 2020): 1281–91. http://dx.doi.org/10.1093/gji/ggaa088.

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SUMMARY The effects of fault waviness on the fault slip modes are unclear. Laboratory study on the effects of the centimetre-scale fault contact distribution, which is mainly controlled by the fault waviness, on granodiorite stick-slip instabilities may help to unveil some aspects of the problem. The fast and slow stick-slip motions were separately generated in two granodiorite samples of the same roughness but different fault contact distributions in the centimetre scale in the laboratory. The experimental results show the following: (1) the fault with the small contact area and heterogeneous contact distribution generates fast stick-slip instabilities, while the fault with the large contact area and homogeneous contact distribution produces slow stick-slip events; (2) the nucleation processes of the fast stick-slip events are characterized by abrupt changes once the nucleation zones expand to the critical nucleation length that is observed to be shorter than the fault length, while the slow stick-slip events appear as a gradual evolution of the nucleation zones leading to total fault sliding. These indicate that, unlike the micron-scale fault contact distribution controlled by roughness, which depends mainly on the grain size of the abrasives used for lapping the fault surface, the centimetre-scale fault contact distribution, which depends mainly on the waviness of the fault surface profile, also plays an important role in the fault slip modes. In addition, the effects of the fault waviness on the fault friction properties are preliminarily analysed based on the rate- and state-dependent friction law.

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Tian, Jialin, Jie Wang, Siqi Zhou, Yinglin Yang, and Liming Dai. "Study of stick–slip suppression and robustness to parametric uncertainty in drill strings containing torsional vibration tool using sliding-mode control." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 235, no. 4 (October 16, 2021): 653–67. http://dx.doi.org/10.1177/14644193211045273.

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Excessive stick–slip vibration of drill strings can cause inefficiency and unsafety of drilling operations. To suppress the stick–slip vibration that occurred during the downhole drilling process, a drill string torsional vibration system considering the torsional vibration tool has been proposed on the basis of the 4-degree of freedom lumped-parameter model. In the design of the model, the tool is approximated by a simple torsional pendulum that brings impact torque to the drill bit. Furthermore, two sliding mode controllers, U1 and U2, are used to suppress stick–slip vibrations while enabling the drill bit to track the desired angular velocity. Aiming at parameter uncertainty and system instability in the drilling operations, a parameter adaptation law is added to the sliding mode controller U2. Finally, the suppression effects of stick–slip and robustness of parametric uncertainty about the two proposed controllers are demonstrated and compared by simulation and field test results. This paper provides a reference for the suppression of stick–slip vibration and the further study of the complex dynamics of the drill string.

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Jang, Min Gyu, Chul Hee Lee, and Seung Bok Choi. "Stick-Slip Compensation of Micro-Positioning Using Elastic-Plastic Static Friction Model." Advanced Materials Research 47-50 (June 2008): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.246.

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In this paper, a stick-slip compensation for the micro-positioning is presented using the statistical rough surface contact model. As for the micro-positioning structure, PZT (lead(Pb) zirconia(Zr) Titanate(Ti)) actuator is used to drive the load for precise positioning with its high resolution incorporating with the PID (Proportional Integral Derivative) control algorithm. Since the stick-slip characteristics for the micro structures are highly nonlinear and complicated, it is necessary to incorporate more detailed stick-slip model for the applications involving the high precision motion control. Thus, the elastic-plastic static friction model is used for the stick-slip compensation considering the elastic-plastic asperity contact in the rough surfaces statistically. Mathematical model of the system for the positioning apparatus was derived from the dynamic behaviors of structural parts. Since the conventional piezoelectric actuator generates the short stroke, a bridge-type flexural hinge mechanism is introduced to amplify the linear motion range. Using the proposed smart structure, simulations under the representative positioning motion were conducted to demonstrate the micro-positioning under the stick-slip friction.

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Wang, Zhiqiang, and Zhenyu Lei. "Cause Analysis of Rail Corrugation Based on Stick-slip Characteristics." Periodica Polytechnica Mechanical Engineering 67, no. 1 (January 16, 2023): 70–80. http://dx.doi.org/10.3311/ppme.21159.

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By analyzing the measured corrugation data, the cause of rail corrugation was discussed theoretically. Then, the vehicle-track coupling model was used to study the stick-slip characteristics of wheel-rail system. Finally, the cause of rail corrugation was explained by combining modal analysis and wheel-rail stick-slip relation. The transverse stick-slip curve on the inner rail-inner wheel of the leading wheelset presents a negative slope characteristic, which makes the inner wheel easy to slide on the inner rail surface and aggravates the wear of inner rail; there are also negative slope sections of the stick-slip curve on the outer rail-outer wheel of the trailing wheelset, but the adhesion coefficient is relatively large, indicating that the outer wheel will not slide obviously and the wear is relatively small. Meantime, with the increase of line curve radius, the negative slope phenomenon of stick-slip curves on the inner and outer rail sides shows a decreasing trend, which illustrates that the sliding wear of wheel is gradually reduced, and thus the occurrence probability of rail corrugation decreases. Combined with modal analysis, it can be seen that the coupling action of wheel discs bending vibration and inner rail bending-torsional vibration is the main cause of rail corrugation under the condition of wheel-rail system with stick-slip negative slope.

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SWAN, JAMES W., and ADITYA S. KHAIR. "On the hydrodynamics of ‘slip–stick’ spheres." Journal of Fluid Mechanics 606 (July 10, 2008): 115–32. http://dx.doi.org/10.1017/s0022112008001614.

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The breakdown of the no-slip condition at fluid–solid interfaces generates a host of interesting fluid-dynamical phenomena. In this paper, we consider such a scenario by investigating the low-Reynolds-number hydrodynamics of a novel ‘slip–stick’ spherical particle whose surface is partitioned into slip and no-slip regions. In the limit where the slip length is small compared to the size of the particle, we first compute the translational velocity of such a particle due to the force density on its surface. Subsequently, we compute the rotational velocity and the response to an ambient straining field of a slip–stick particle. These three Faxén-type formulae are rich in detail about the dynamics of the particles: chiefly, we find that the translational velocity of a slip–stick sphere is coupled to all of the moments of the force density on its surface; furthermore, such a particle can migrate parallel to the velocity gradient in a shear flow. Perhaps most important is the coupling we predict between torque and translation (and force and rotation), which is uncharacteristic of spherical particles in unbounded Stokes flow and originates purely from the slip–stick asymmetry.

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47

Lee, Kwang Hee, and Chul Hee Lee. "Characteristics of Magneto-Rheological Elastomer under Stick-Slip Condition." Key Engineering Materials 842 (May 2020): 193–98. http://dx.doi.org/10.4028/www.scientific.net/kem.842.193.

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This paper examines the characteristics of stick-slip phenomena between the glass plate and Magneto-Rheological Elastomer (MRE) surface. Stick-slip phenomena are the spontaneous jerking motion that occurs while two objects are sliding over each other, usually accompanied by noise. Stick-slip is generated when it involves discontinuous frictional degradation when moving from static friction to dynamic friction. The phenomena can lead to uneven wear patterns, vibration and squeal noise which cause a shorter lifespan for the corresponding mechanical elements. MREs are kind of function materials to consist of a polymeric matrix with embedded ferromagnetic particles. Mechanical properties of the MREs can be controlled by the application of magnetic fields. The magnetic field-based controllability can be applied to the control of stick-slip phenomena. The friction experiment is conducted with the Reciprocating Friction Tester (RFT). The sliding speed of the RFT should be in low-speed conditions in order to make the stick-slips relatively easy to occur. A uniform magnetic field and a weight load are applied to the MRE sample to observe the effect of various experimental parameters on the movement of the stick-slip. In addition, frictional sounds due to the stick-slip phenomenon under different loads and magnetic field strength are measured and analyzed. The results of this experiment show that as the strength of the magnetic field increases, the difference in stiffness between the wipers-glass decreases, mitigating fricatives. The result is expected to be well applied to low-noise automotive wipers based on the controllability of friction behavior and squeal noise.

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You, Hsien-I., and Jeng-Hong Hsia. "The Influence of Friction-Speed Relation on the Occurrence of Stick-Slip Motion." Journal of Tribology 117, no. 3 (July 1, 1995): 450–55. http://dx.doi.org/10.1115/1.2831274.

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A theoretical study of stick-slip motion is provided in the present paper. The study focuses on the influence of the friction-speed relation and the effects of driving speed and damping force of the system on the behavior of the stick-slip motion. The two latter effects are characterized by the speed parameter, Sp, and the damping ratio,ξ, respectively. The results show that, for a system undergoing nonuniform motion, the vibratory frequency increases and the amplitude decreases as the speed parameter increases. For two contacting sliding surfaces, there exists an inversion state at which the stick-slip motion disappears. The magnitude of the negative slope of the friction-speed relation near Vr = 0 is shown to have significant effect on the occurrence of the stick-slip motion.

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Cayeux, E., A. Ambrus, L. Øy, A. Helleland, S. T. Brundtland, H. Nevøy, and M. Morys. "Analysis of Torsional Stick-Slip Situations from Recorded Downhole Rotational Speed Measurements." SPE Drilling & Completion 36, no. 03 (January 26, 2021): 560–74. http://dx.doi.org/10.2118/199678-pa.

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Summary The use of recorded downhole rotational speed measurements with a bandwidth up to 9 Hz gives new insights into the conditions under which stick-slip torsional oscillations occur. Observations made while drilling two reservoir sections have shown that, out of all the stick-slip situations identified, 72% of them for one well and 64% for the other well occurred in off-bottom conditions. In these off-bottom conditions, stick-slip was systematically observed while starting the topdrive (TD) until a sufficiently high TD rotational velocity was requested. For these two sections, off-bottom stick-slip was either related to using TD speeds below 120 rev/min or to reaming down during reciprocation procedures. In on-bottom conditions, stick-slip events occurred predominantly when the TD speed was less than 120 rev/min (53 and 32% of the on-bottom cases) but also in association with downlinking to the rotary steerable system (RSS) (23 and 46% of the on-bottom cases), and this, even though the TD speed was larger than 120 rev/min. These on-bottom stick-slip situations did not necessarily occur at a very high weight on bit (WOB) because 98% of them for one well and 46% for the other well took place when the WOB was lower than 10 ton. Downhole measurements have shown that when the drillstring is subject to strong stick-slip conditions, the downhole rotational speed changes from stationary to more than 300 rev/min in just a fraction of a second. Direct observations of downhole rotational speed at high frequency help in discovering conditions that were not suspected to lead to large torsional oscillations. This new information can be used to improve drilling operational procedures and models of the drilling process, therefore enabling increased drilling efficiency.

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Wang, Xiao Cui, Ji Liang Mo, Huajiang Ouyang, Xiao Dong Lu, Bo Huang, and ZR Zhou. "The effects of grooved rubber blocks on stick–slip and wear behaviours." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 11 (November 17, 2018): 2939–54. http://dx.doi.org/10.1177/0954407018811039.

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This work presents an experimental and theoretical combined study of the effects of the elastic rubber blocks with different surface modifications on the friction-induced stick–slip oscillation and wear of a brake pad sample in sliding contact with an automobile brake disc. The experiments are conducted on the customized experimental setup in a pad-on-disc configuration. The experimental results show that (1) the friction system with the plain rubber block still exhibits visible stick–slip oscillation, but the intensity of the stick–slip oscillation is reduced to a certain degree compared with the Original friction system (without rubber block); (2) the grooved rubber blocks display a better ability to reduce the stick–slip oscillation compared with the plain rubber block; (3) the rubber blocks with a vertical groove (perpendicular to the relative velocity) or a horizontal groove (parallel to the relative velocity) or a diagonal groove (45° inclined to the relative velocity) on their surfaces can suppress the stick–slip oscillation more effectively with various degrees of success. The experimental results also reveal the varying effects of the different rubber blocks on wear. To explain the experimental phenomenon reasonably, a theoretical analysis is conducted to investigate the effects of different rubber blocks on both stick–slip oscillation and wear using ABAQUS. Furthermore, the analysis of the contact pressure on the pad interfaces and the deformation of the rubber blocks are studied to provide a possible explanation of the experimental results.

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Journal articles on the topic 'Stick-slip'

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