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Articoli di riviste sul tema "Force"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Mandelkern, Matthew, and Jonathan Phillips. "Sticky situations: 'Force' and quantifier domains." Semantics and Linguistic Theory 28 (November 27, 2018): 474. http://dx.doi.org/10.3765/salt.v28i0.4431.

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When do we judge that someone was forced to do what they did? One relatively well-established finding is that subjects tend to judge that agents were not forced to do actions when those actions violate norms. A surprising discovery of Young & Phillips 2011 is that this effect seems to disappear when we frame the relevant ‘force’-claim in the active rather than passive voice ('X forced Y to φ' vs. 'Y was forced to φ by X'). Young and Phillips found a similar contrast when the scenario itself shifts attention from Y (the forcee) to X (the forcer). We propose that these effects can be (at lea

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2

Nguyen, Nhu-Tung. "A development method of cutting force coefficients in face milling process using parallelogram insert." EUREKA: Physics and Engineering, no. 5 (September 13, 2021): 36–52. https://doi.org/10.21303/2461-4262.2021.001890.

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This paper presents a modeling method of cutting force and a combination approach of theory and experimental methods in the determination of cutting force coefficients in the face milling process using a parallelogram insert. By the theoretical method, the cutting forces were modeled by a mathematical function of cutting cutter geometry (Cutter diameter, the number of inserts, the insert nose radius, insert cutting edge helix angle, etc.), cutting conditions (depth of cut, feed per flute, spindle speed, etc.), and cutting force coefficients (shear force coefficients, edge force coefficients).

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3

Perveen, Asma, M. Rahman, and Y. S. Wong. "Modeling of Vertical Micro Grinding." Key Engineering Materials 625 (August 2014): 463–68. http://dx.doi.org/10.4028/www.scientific.net/kem.625.463.

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Due to the small feed rate used in micro-machining, ploughing force needs to be considered in addition to the chip formation force. A new analytical model has been proposed to calculate cutting forces of micro-grinding process based on the process configuration, work piece material properties, and micro-grinding tool topography. The proposed approach allows the calculation of cutting force comprising both the chip formation force and ploughing forcec considering single grain interaction.

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4

Mihalka, Michael. "NATO Response Force: Rapid? Responsive? A Force?" Connections: The Quarterly Journal 04, no. 2 (2005): 67–79. http://dx.doi.org/10.11610/connections.04.2.09.

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5

Marquardt, Jens, Karoline Steinbacher, and Miranda Schreurs. "Driving force or forced transition?" Journal of Cleaner Production 128 (August 2016): 22–33. http://dx.doi.org/10.1016/j.jclepro.2015.06.080.

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6

Spakovszky, Z. S. "Analysis of Aerodynamically Induced Whirling Forces in Axial Flow Compressors." Journal of Turbomachinery 122, no. 4 (2000): 761–68. http://dx.doi.org/10.1115/1.1312801.

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A new analytical model to predict the aerodynamic forces in axial flow compressors due to asymmetric tip-clearance is introduced. The model captures the effects of tip-clearance induced distortion (i.e., forced shaft whirl), unsteady momentum-induced tangential blade forces, and pressure-induced forces on the spool. Pressure forces are shown to lag the tip-clearance asymmetry, resulting in a tangential (i.e., whirl-inducing) force due to spool pressure. This force can be of comparable magnitude to the classical Alford force. Prediction and elucidation of the Alford force is also presented. In

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7

Spandan, Vamsi, Daniel Putt, Rodolfo Ostilla-Mónico, and Alpha A. Lee. "Fluctuation-induced force in homogeneous isotropic turbulence." Science Advances 6, no. 14 (2020): eaba0461. http://dx.doi.org/10.1126/sciadv.aba0461.

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Understanding force generation in nonequilibrium systems is a notable challenge in statistical physics. We uncover a fluctuation-induced force between two plates immersed in homogeneous isotropic turbulence using direct numerical simulations. The force is a nonmonotonic function of plate separation. The mechanism of force generation reveals an intriguing analogy with fluctuation-induced forces: In a fluid, energy and vorticity are localized in regions of defined length scales. When varying the distance between the plates, we exclude energy structures modifying the overall pressure on the plate

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8

Ahmed, Rizwan, Christian Maria Firrone, and Stefano Zucca. "Design and Calibration of a Tri-Directional Contact Force Measurement System." Applied Sciences 11, no. 2 (2021): 877. http://dx.doi.org/10.3390/app11020877.

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In low pressure turbine stages, adjacent blades are coupled to each other at their tip by covers, called shrouds. Three-dimensional periodic contact forces at shrouds strongly affect the blade vibration level as energy is dissipated by friction. To validate contact models developed for the prediction of nonlinear forced response of shrouded blades, direct contact force measurement during dynamic tests is mandatory. In case of shrouded blades, the existing unidirectional and bi-directional contact force measurement methods need to be improved and extended to a tri-directional measurement of shr

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9

Avalos-Sánchez, Hugo, Abraham J. Carmona-Carmona, Martha A. Palomino-Ovando, et al. "Increasing Light-Induced Forces with Magnetic Photonic Glasses." Photonics 11, no. 9 (2024): 827. http://dx.doi.org/10.3390/photonics11090827.

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In this work, we theoretically and experimentally study the induction of electromagnetic forces in an opal-based magnetic photonic glass, where light normally impinges onto a disordered arrangement of SiO2 spheres by the aggregation of Fe3O4 nanoparticles. The working wavelength is 633 nm. Experimental evidence is presented for the force that results from forced oscillations of the photonic structure. Finite-element method simulations and a theoretical model estimate the magnetic force volumetric density value, peak displacement, and velocity of oscillations. The magnetic force is of the order

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10

Yamanaka, Kazushi, and Eisuke Tomita. "Lateral Force Modulation Atomic Force Microscope for Selective Imaging of Friction Forces." Japanese Journal of Applied Physics 34, Part 1, No. 5B (1995): 2879–82. http://dx.doi.org/10.1143/jjap.34.2879.

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11

Szcześniak, Wacław, and Magdalena Ataman. "The Krylov problem in the case of a beam on Vlasov inertial foundation." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (2018): 728–36. http://dx.doi.org/10.24136/atest.2018.165.

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The paper deals with vibrations of the elastic beam caused by the moving force traveling with uniform speed. The function defining the pure forced vibrations (aperiodic vibrations) is presented in a closed form. Dynamic deflection of the beam caused by moving force is compared with the static deflection of the beam subjected to the force , and compressed by axial forces . Comparing equations (9) and (13), it can be concluded that the effect on the deflection of the speed of the moving force is the same as that of an additional compressive force . Selected problems of stability of the beam on t

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12

Bogning, Jean Roger. "Forced KdV Equation for Tsunamis Generation: How to Choose the External Forces and Corresponding Solutions." Applied Sciences Research Periodicals 2, no. 5 (2024): 51–70. http://dx.doi.org/10.63002/asrp.25.443.

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The artificial triggering of tsunamis is increasingly modeled by the forced Korteveg de Vries( KdV) equation. But beyond this modeling, the biggest problem is knowing how to choose the excitations or external forces so that the solutions obtained are exact. In this article, we show how to choose the external force in the forced KdV equation. We also show that all the exact solutions obtained depend closely on the external force. Beyond all these demonstrations, we offer some solutions as well as their profiles.

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13

Khudjaev, Mukhiddin, Anvar Rizaev, Gulomjon Pirnazarov, and Musallam Mirzaeva. "Simulation of forced vibration of a wedge pair under the impact of variable force." E3S Web of Conferences 413 (2023): 02051. http://dx.doi.org/10.1051/e3sconf/202341302051.

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The forced oscillations of a wedge pair under the effect of a variable force are investigated in the article. The general solution to the differential equation of forced oscillations of a wedge pair is chosen in the form depending on some unknown function. An equation for this function is obtained for the cosine form of the virtual displacement of the wedge under longitudinal displacement. This equation is obtained on the basis of the principle of virtual work of inertial forces, elastic forces, and external dynamic forces with virtual displacement. As a result, the solution to the differentia

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14

Kassenov, L. G., B. H. Zhanbusinova, and S. S. Sagintayev. "CAN THE FRICTION FORCE BE THE DRIVING FORCE?" BULLETIN Series of Physics & Mathematical Sciences 71, no. 3 (2020): 111–17. http://dx.doi.org/10.51889/2020-3.1728-7901.15.

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Friction is one of the types of interaction between bodies. It occurs when two bodies touch. The forces acting between the surfaces of contacting solids are called dry friction forces. They are always directed tangentially to the touching surfaces and are divided into the forces of friction at rest, sliding and rolling. The friction forces depend on many factors that accompany the movement of bodies in the presence of friction. In this regard, the description of friction forces is possible only with the help of empirically found approximate laws, which are often quite rough. The rest friction

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15

Gilroy, Paul. "“Rhythm in the Force of Forces”." Critical Times 2, no. 3 (2019): 370–95. http://dx.doi.org/10.1215/26410478-7862525.

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Abstract This essay is addressed to discrepancies between musical and political time. It uses the death of Hugh Masekela to consider the changing pattern of intergenerational relationships and the place of music within local and transnational freedom movements. The impact of technological change on the mediation of political solidarity is then examined through two principal examples: the elaboration of generic racial identity and the weaponization of culture and information by the alt-right and its fellow travelers.

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16

Zellers, Kerith K., and M. Susan Hallbeck. "The Effects of Gender, Wrist and Forearm Position on Maximum Isometric Power Grasp Force, Wrist Force, and their Interactions." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 39, no. 10 (1995): 543–47. http://dx.doi.org/10.1177/154193129503901001.

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The interaction of power grasp force and wrist force has not been previously examined. This research not only examined the effect of task (wrist force in flexion and extension with and without simultaneous power grasp force), but the effects of gender, wrist position, and forearm position on maximal static exertions. Gender, wrist position, and task were found to significantly affect both power grasp and wrist forces. Females averaged 59.5% of male power grasp force and 51% of male wrist force. Power grasp force was significantly greater in neutral and extended wrist positions than flexed wris

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17

Setúbal, Fábio Antônio do Nascimento, Sérgio de Souza Custódio Filho, Newton Sure Soeiro, Alexandre Luiz Amarante Mesquita, and Marcus Vinicius Alves Nunes. "Force Identification from Vibration Data by Response Surface and Random Forest Regression Algorithms." Energies 15, no. 10 (2022): 3786. http://dx.doi.org/10.3390/en15103786.

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Several dynamic projects and fault diagnosis of mechanical structures require the knowledge of the acting external forces. However, the measurement of such forces is often difficult or even impossible; in such cases, an inverse problem must be solved. This paper proposes a force identification method that uses the response surface methodology (RSM) based on central composite design (CCD) in conjunction with a random forest regression algorithm. The procedure initially required the finite element modal model of the forced structure. Harmonic analyses were then performed with varied parameters o

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18

Liu, Ming, Shan Cao, and Shuliang Cao. "Numerical analysis for interphase forces of gas-liquid flow in a multiphase pump." Engineering Computations 35, no. 6 (2018): 2386–402. http://dx.doi.org/10.1108/ec-04-2018-0161.

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Purpose The modeling of interphase forces plays a significant role in the numerical simulation of gas–liquid flow in a rotodynamic multiphase pump, which deserves detailed study. Design/methodology/approach Numerical analysis is conducted to estimate the influence of interphase forces, including drag force, lift force, virtual mass force, wall lubrication force and turbulent dispersion force. Findings The results show that the magnitude of the interphase forces can be sorted by: drag force > virtual mass force > lift force > turbulent dispersion force > wall lubrication force. The

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19

Rowell, Robert M., M. Ram Gudavalli, and Steven Silverman. "A pilot study of the effect of force feedback training on students learning flexion-distraction chiropractic technique*." Journal of Chiropractic Education 33, no. 2 (2018): 100–105. http://dx.doi.org/10.7899/jce-18-5.

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Objective: We compared traditional training alone and with the addition of force feedback training for learning flexion-distraction chiropractic technique. Methods: Participants were randomly allocated to two groups (traditional or traditional plus force feedback training). Students' forces were measured before training and after force feedback training. Students rated the helpfulness of the training and the comfort of the force transducer. Results: Thirty-one students were enrolled. Both groups delivered similar forces at baseline. Group 1 students' subsequent force measurements were higher a

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20

Leib, Raz, Amir Karniel, and Ilana Nisky. "The effect of force feedback delay on stiffness perception and grip force modulation during tool-mediated interaction with elastic force fields." Journal of Neurophysiology 113, no. 9 (2015): 3076–89. http://dx.doi.org/10.1152/jn.00229.2014.

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During interaction with objects, we form an internal representation of their mechanical properties. This representation is used for perception and for guiding actions, such as in precision grip, where grip force is modulated with the predicted load forces. In this study, we explored the relationship between grip force adjustment and perception of stiffness during interaction with linear elastic force fields. In a forced-choice paradigm, participants probed pairs of virtual force fields while grasping a force sensor that was attached to a haptic device. For each pair, they were asked which fiel

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21

Ren, Haojie, Shixiao Fu, Chang Liu, Mengmeng Zhang, Yuwang Xu, and Shi Deng. "Hydrodynamic Forces of a Semi-Submerged Cylinder in an Oscillatory Flow." Applied Sciences 10, no. 18 (2020): 6404. http://dx.doi.org/10.3390/app10186404.

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This work experimentally investigated the performance of hydrodynamic forces on a semi-submerged cylinder under an oscillatory flow. To generate the equivalent oscillatory flow, the semi-submerged cylinder is forced to oscillate in several combinations of different periods and amplitudes. The mean downward lift force was observed to be significant and the fluctuating lift forces show dominant frequency is twice that of oscillatory flow and amplitude that is the same as the mean lift force. Based on this main hydrodynamic feature, a novel empirical prediction formula for the lift forces on semi

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22

Williams, John M., Taejoon Han, and Thomas P. Beebe. "Determination of Single-Bond Forces from Contact Force Variances in Atomic Force Microscopy." Langmuir 12, no. 5 (1996): 1291–95. http://dx.doi.org/10.1021/la950500j.

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23

Li, Ming, and Rong Qing Xu. "A New Method for Detecting Jet Impact Force of Laser Cavity." Key Engineering Materials 552 (May 2013): 463–69. http://dx.doi.org/10.4028/www.scientific.net/kem.552.463.

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Based on the deflection effect resulted from deformation, a new experiment device for measuring the jet impact force of laser cavity is developed. The device has been used in experiment and the typical signal of jet impact force was obtained. The variational characteristic of the force with time was given. The result shows that during the experiment the target material sustains three forces. In order of time, the first force is the laser ablation force, and the other two forces are jet impact forces. The first jet impact force is greater than the ablation force and the second jet impact force

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24

HOVER, F. S., A. H. TECHET, and M. S. TRIANTAFYLLOU. "Forces on oscillating uniform and tapered cylinders in cross flow." Journal of Fluid Mechanics 363 (May 25, 1998): 97–114. http://dx.doi.org/10.1017/s0022112098001074.

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Forces are measured at both ends of rigid cylinders with span 60 cm, performing transverse oscillations within an oncoming stream of water, at Reynolds number Re≈3800. Forced harmonic motions and free vibrations of uniform and tapered cylinders are studied. To study free motions, a novel force-feedback control system has been developed, consisting of: (a) a force transducer, which measures forces on a section of a cylinder moving forward at constant speed; (b) a computer using the measured force signal to drive in real time a numerical simulation of an equivalent mass-dashpot-spring system; (c

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25

Flamarion, Marcelo V., and Efim Pelinovsky. "Solitary Wave Interactions with an External Periodic Force: The Extended Korteweg-de Vries Framework." Mathematics 10, no. 23 (2022): 4538. http://dx.doi.org/10.3390/math10234538.

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In this work we asymptotically and numerically studied the interaction of large amplitude solitary waves with an external periodic force using the forced extended Korteweg-de Vries equation (feKdV). Regarding these interactions, we found three types of regimes depending on the amplitude of the solitary wave and how its speed and the speed of the external force are related. A solitary wave can remain steady when its crest and the crest of the external force are in phase, it can bounce back and forth remaining close to its initial position when its speed and the external force speed are near res

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26

Niita, Shusaku, Taichi Sato, Hiroki Ota, and Katsuaki Nagahashi. "TuC-2-4 AERODYNAMIC EXCITATION FORCE GENERATED BY ROTATING FAN AND ITS REACTION FORCES." Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment : IIP/ISPS joint MIPE 2015 (2015): _TuC—2–4–1—_TuC—2–4–3. http://dx.doi.org/10.1299/jsmemipe.2015._tuc-2-4-1.

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27

Johnson, Peter, Hugh McLoone, and Steve Arms. "Developing Miniature Force-Sensing Technologies for Measuring the Forces Applied to a Computer Mouse." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 44, no. 37 (2000): 629–32. http://dx.doi.org/10.1177/154193120004403722.

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Force-sensing technologies, 1.4 − 2.5 mm thick, were developed to measure the forces applied to the button and sides of a computer mouse. A force-sensing computer mouse was developed, built and tested for force measurement accuracy. The force-sensing technology could accurately measure the forces applied to the sides of a mouse and identify the location of force application. The force-sensing technology also accurately measured the forces applied to the mouse button with slight measurement errors at low forces. The force-sensing technologies developed in this study were made from commercially

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28

SRINIVASAN, K., D. V. SENTHILKUMAR, R. SURESH, K. THAMILMARAN, and M. LAKSHMANAN. "EXPERIMENTAL REALIZATION OF STRANGE NONCHAOTIC ATTRACTORS IN A NONLINEAR SERIES LCR CIRCUIT WITH NONSINUSOIDAL FORCE." International Journal of Bifurcation and Chaos 19, no. 12 (2009): 4131–63. http://dx.doi.org/10.1142/s0218127409025262.

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We have identified several prominent routes, namely, fractalization, fractalization followed by intermittency, intermittency and Heagy–Hammel routes, for the birth of strange nonchaotic attractors (SNAs) in a quasiperiodically forced electronic system with nonsinusoidal (square wave) force as one of the quasiperiodic forces [Senthilkumar et al., 2008]. In addition, a new bubbling route has also been identified in this circuit. Although some of these prominent routes have been reported experimentally [Thamilmaran et al., 2006] in a quasiperiodically forced electronic circuit with both the forci

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29

Kulik, Andrzej J., Małgorzata Lekka, Kyumin Lee, Grazyna Pyka-Fościak, and Wieslaw Nowak. "Probing fibronectin–antibody interactions using AFM force spectroscopy and lateral force microscopy." Beilstein Journal of Nanotechnology 6 (May 15, 2015): 1164–75. http://dx.doi.org/10.3762/bjnano.6.118.

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The first experiment showing the effects of specific interaction forces using lateral force microscopy (LFM) was demonstrated for lectin–carbohydrate interactions some years ago. Such measurements are possible under the assumption that specific forces strongly dominate over the non-specific ones. However, obtaining quantitative results requires the complex and tedious calibration of a torsional force. Here, a new and relatively simple method for the calibration of the torsional force is presented. The proposed calibration method is validated through the measurement of the interaction forces be

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30

Kinoshita, Hiroshi, Lars Bäckström, J. Randall Flanagan, and Roland S. Johansson. "Tangential Torque Effects on the Control of Grip Forces When Holding Objects With a Precision Grip." Journal of Neurophysiology 78, no. 3 (1997): 1619–30. http://dx.doi.org/10.1152/jn.1997.78.3.1619.

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Kinoshita, Hiroshi, Lars Bäckström, J. Randall Flanagan, and Roland S. Johansson. Tangential torque effects on the control of grip forces when holding objects with a precision grip. J. Neurophysiol. 78: 1619–1630, 1997. When we manipulate small objects, our fingertips are generally subjected to tangential torques about the axis normal to the grasp surface in addition to linear forces tangential to the grasp surface. Tangential torques can arise because the normal force is distributed across the contact area rather than focused at a point. We investigated the effects of tangential torques and t

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31

Biegus, Antoni, and Dariusz Czepiżak. "Equivalent stabilizing force of members parabolically compressed by longitudinally variable axial force." MATEC Web of Conferences 262 (2019): 09004. http://dx.doi.org/10.1051/matecconf/201926209004.

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The EN 1993-1-1 model of equivalent stabilizing force qd and Rd of bracings conservatively assumes that the braced member is compressed with a force constant along its length. This assumption is incorrect since the axial force distribution varies along the length of the braced member. As a result, the braced member generates equivalent stabilizing forces different from equivalent force qd and Rd acc. to EN 1993-1-1. This paper presents parametric studies of the equivalent stabilizing forces of the braced, compression top chord of roof trusses. The girder’s top chord is compressed parabolically

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Meiss, Richard A., and Ramana M. Pidaparti. "Mechanical state of airway smooth muscle at very short lengths." Journal of Applied Physiology 96, no. 2 (2004): 655–67. http://dx.doi.org/10.1152/japplphysiol.00388.2003.

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Although the shortening of smooth muscle at physiological lengths is dominated by an interaction between external forces (loads) and internal forces, at very short lengths, internal forces appear to dominate the mechanical behavior of the active tissue. We tested the hypothesis that, under conditions of extreme shortening and low external force, the mechanical behavior of isolated canine tracheal smooth muscle tissue can be understood as a structure in which the force borne and exerted by the cross bridge and myofilament array is opposed by radially disposed connective tissue in the presence o

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Martin, Bernard J., Thomas J. Armstrong, James A. Foulke, et al. "Keyboard Reaction Force and Finger Flexor Electromyograms during Computer Keyboard Work." Human Factors: The Journal of the Human Factors and Ergonomics Society 38, no. 4 (1996): 654–64. http://dx.doi.org/10.1518/001872096778827288.

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This study examines the relationship between forearm EMGs and keyboard reaction forces in 10 people during keyboard tasks performed at a comfortable speed. A linear fit of EMG force data for each person and finger was calculated during static fingertip loading. An average r2 of .71 was observed for forces below 50% of the maximal voluntary contraction (MVC). These regressions were used to characterize EMG data in force units during the typing task. Averaged peak reaction forces measured during typing ranged from 3.33 N (thumb) to 1.84 N (little finger), with an overall average of 2.54 N, which

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FUJII, Masatoshi. "Surface Forces Measurement by Atomic Force Microscopy." Journal of the Japan Society of Colour Material 72, no. 1 (1999): 34–42. http://dx.doi.org/10.4011/shikizai1937.72.34.

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Hao, Huang Wen. "Electrostatic and contact forces in force microscopy." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 9, no. 2 (1991): 1323. http://dx.doi.org/10.1116/1.585188.

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Mltropolsky, Yu A., and A. M. Samoilenko. "Forced oscillations of systems with impulse force." International Journal of Non-Linear Mechanics 20, no. 5-6 (1985): 419–26. http://dx.doi.org/10.1016/0020-7462(85)90018-6.

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Sheets, Kevin, Ji Wang, Wei Zhao, Rakesh Kapania, and Amrinder S. Nain. "Nanonet Force Microscopy for Measuring Cell Forces." Biophysical Journal 111, no. 1 (2016): 197–207. http://dx.doi.org/10.1016/j.bpj.2016.05.031.

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Yang, R., R. Miller, and P. J. Bryant. "Atomic force profiling by utilizing contact forces." Journal of Applied Physics 63, no. 2 (1988): 570–72. http://dx.doi.org/10.1063/1.340089.

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O'Shea, Sean J. "Oscillatory Forces in Liquid Atomic Force Microscopy." Japanese Journal of Applied Physics 40, Part 1, No. 6B (2001): 4309–13. http://dx.doi.org/10.1143/jjap.40.4309.

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San Francisco Section of the Americ, Joint Committee on Lateral Forces,. "Earthquake forces for the lateral force code." Structural Design of Tall Buildings 9, no. 1 (2000): 49–64. http://dx.doi.org/10.1002/(sici)1099-1794(200003)9:1<49::aid-tal130>3.0.co;2-x.

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Ehrsson, H. Henrik, Anders Fagergren, Roland S. Johansson, and Hans Forssberg. "Evidence for the Involvement of the Posterior Parietal Cortex in Coordination of Fingertip Forces for Grasp Stability in Manipulation." Journal of Neurophysiology 90, no. 5 (2003): 2978–86. http://dx.doi.org/10.1152/jn.00958.2002.

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Grasp stability during object manipulation is achieved by the grip forces applied normal to the grasped surfaces increasing and decreasing in phase with increases and decreases of destabilizing load forces applied tangential to the grasped surfaces. This force coordination requires that the CNS anticipates the grip forces that match the requirements imposed by the self-generated load forces. Here, we use functional MRI (fMRI) to study neural correlates of the grip-load force coordination in a grip-load force task in which six healthy humans attempted to lift an immovable test object held betwe

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Sundararajan, Sriram, and Bharat Bhushan. "Topography-induced contributions to friction forces measured using an atomic force/friction force microscope." Journal of Applied Physics 88, no. 8 (2000): 4825. http://dx.doi.org/10.1063/1.1310187.

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43

Hichert, Mona, and Dick H. Plettenburg. "Ipsilateral Scapular Cutaneous Anchor System: An alternative for the harness in body-powered upper-limb prostheses." Prosthetics and Orthotics International 42, no. 1 (2017): 101–6. http://dx.doi.org/10.1177/0309364617691624.

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Abstract (sommario):

Background: Body-powered prosthesis users frequently complain about the poor cosmesis and comfort of the traditional shoulder harness. The Ipsilateral Scapular Cutaneous Anchor System offers an alternative, but it remains unclear to what extent it affects the perception and control of cable operation forces compared to the traditional shoulder harness. Objective: To compare cable force perception and control with the figure-of-nine harness versus the Ipsilateral Scapular Cutaneous Anchor System and to investigate force perception and control at different force levels. Study design: Experimenta

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Wei, Baochen, and Feng Gao. "Output force capacity polytope approach for actuator forces selection of three degrees of freedom excavating manipulator." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 11 (2013): 2007–17. http://dx.doi.org/10.1177/0954406213512629.

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Abstract (sommario):

Output force or velocity polytopes are usually used as an index of the manipulability of robot. This paper discusses the relationship between the actuator force and the variation of the output force capacity polytope and proposes the output force capacity polytope method for the selection of actuator forces of a three degrees of freedom excavating manipulator with the requirement that the output force on the end effector is a set of all possible forces rather than a single force. In this paper, the method to calculate capacity polytope is introduced with the consideration of gravity effect. Wi

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Inui, Nobuyuki, Yumi Katsura, and Masaki Yamanishi. "Retention of Relative Force in the Scaling of a Serial Force Pattern with an Attenuated-Force Tap." Perceptual and Motor Skills 92, no. 1 (2001): 301–8. http://dx.doi.org/10.2466/pms.2001.92.1.301.

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Abstract (sommario):

The present study was designed to examine the retention of relative force in the scaling of a serial force pattern in a finger-tapping sequence using an attenuated tap. On practice trials, 12 undergraduate students tapped a force plate connected to strain gauges that gave them feedback about the force. On test trials, participants recalled the force pattern (200 gm-200 gm-200 gm-100 gm) and the intertap interval (400 msec.) practiced during the practice period without the feedback (recalled task). Then, they adaptively produced a halved (halved task) or doubled force profile (doubled task) at

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46

Zhang, Zhijian, Youping Chen, and Dailin Zhang. "Development and Application of a Tandem Force Sensor." Sensors 20, no. 21 (2020): 6042. http://dx.doi.org/10.3390/s20216042.

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Abstract (sommario):

In robot teaching for contact tasks, it is necessary to not only accurately perceive the traction force exerted by hands, but also to perceive the contact force at the robot end. This paper develops a tandem force sensor to detect traction and contact forces. As a component of the tandem force sensor, a cylindrical traction force sensor is developed to detect the traction force applied by hands. Its structure is designed to be suitable for humans to operate, and the mechanical model of its cylinder-shaped elastic structural body has been analyzed. After calibration, the cylindrical traction fo

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Szekeres, Alexander, M. Ham, and J. Jeswiet. "Force Measurement in Pyramid Shaped Parts with a Spindle Mounted Force Sensor." Key Engineering Materials 344 (July 2007): 551–58. http://dx.doi.org/10.4028/www.scientific.net/kem.344.551.

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Abstract (sommario):

Forces are measured in Single Point Incremental Forming with a spindle mounted sensor. Results for AA3003 aluminum cones and pyramids are shown. Forces are measured for parts with a 75° forming angle, at which shear cracks are expected to occur. Forces in the three directions are measured on the spindle with force spikes being observed when the tool changes direction at pyramid corners, and reductions in force when stepping between contours. There is also a force variation as the forming tool moves along the pyramid wall. A comparison is made between the forces measured for cones and pyramids.

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Ataman, M. "Amplification Factors in the Case of Beam Under Moving Force – Theoretical Analysis." Archives of Civil Engineering 65, no. 1 (2019): 83–96. http://dx.doi.org/10.2478/ace-2019-0006.

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Abstract (sommario):

AbstractThe impact of a moving load speed on the dynamic overload of beams, assuming that the track of the load has no unevenness, is examined. First the problem of a visco-elastic beam on a Winkler foundation subjected to a force moving at a constant speed will be solved. Using the Bubnov-Galerkin method, the deflections of the beam, and then the bending moments and shear forces will be determined. The solution of the problem will be obtained both for the case of a forced vibration and the case of a free vibration after the moving force has left the beam. Using these solutions, dynamic amplif

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49

De Corato, M., and V. Garbin. "Capillary interactions between dynamically forced particles adsorbed at a planar interface and on a bubble." Journal of Fluid Mechanics 847 (May 21, 2018): 71–92. http://dx.doi.org/10.1017/jfm.2018.319.

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Abstract (sommario):

We investigate the dynamic interfacial deformation induced by micrometric particles exerting a periodic force on a planar interface or on a bubble, and the resulting lateral capillary interactions. Assuming that the deformation of the interface is small, neglecting the effect of viscosity and assuming point particles, we derive analytical formulas for the dynamic deformation of the interface. For the case of a planar interface the dynamic point force simply generates capillary waves, while for the case of a bubble it excites shape oscillations, with a dominant deformation mode that depends on

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50

Harada, Takashi, and Podi Liu. "Internal and External Forces Measurement of Planar 3-DOF Redundantly Actuated Parallel Mechanism by Axial Force Sensors." ISRN Robotics 2013 (October 9, 2013): 1–8. http://dx.doi.org/10.5402/2013/593606.

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Abstract (sommario):

This paper proposes a method for measuring the internal and external forces of a planar 3-DOF (degree of freedom) redundantly actuated parallel mechanism. The internal forces, force acts inside the endplate and mechanism constraint force, and the external forces, forces act on the endplate and thrusts by actuators, were measured simultaneously using the axial forces of the rods. Kinetostatic equations of the parallel mechanism were used to derive algorithms for measuring the internal and external forces. A link axis force sensor was developed using a strain gauge sensor. To verify the actual i

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