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Luoyang QIBR Bearing Co.,LtdCall us : +86 − −(0379)63968877 // Email us : [email protected]
Luoyang QIBR Bearing Co.,LtdCall us : +86 − −(0379)63968877 // Email us : [email protected]
2018-9-3E ect of boundary vibration on the frictional behavior of a dense sheared granular layer Received: 29 January 2013 / Accepted: 29 May 2013 Abstract We report results of 3D Discrete Element Method (DEM) simu-lations aiming at investigating the role of the boundary vibration in inducing frictional weakening in sheared granular layers
2017-12-20The early achievements on disc brake system are attributed to the dry frictional stick-slip self-excited vibration [3-4] and unstable structural vibration [5-6] Stick-slip refers to a fluctuation of friction force or sliding velocity with time or sliding distance changing [ 7 ]
Using the equation of displacement compatibility a novel method for describing the contact between pantograph and catenary is proposed in this paper Then an interaction catenary-pantograph system capable of describing vertical vibration is established Taking into account the frictional characteristic between pantograph and catenary the Coulomb model is applied
2019-9-12Example of majorly viscous (a) majorly frictional (b) and frictional-viscous damper (c) 256 Journal of Low Frequency Noise Vibration and Active Control 38(2) During the damper system design phase several guidelines are recommended in order to better select and
Using the equation of displacement compatibility a novel method for describing the contact between pantograph and catenary is proposed in this paper Then an interaction catenary-pantograph system capable of describing vertical vibration is established Taking into account the frictional characteristic between pantograph and catenary the Coulomb model is applied
2020-3-20applied at these interfaces The frictional interfaces slip when the applied seismic load exceeds the maximum static friction force (slip force) of the damper and thus provide the structure to be protected an additional energy dissipation source through friction behavior [1 2]
Using the equation of displacement compatibility a novel method for describing the contact between pantograph and catenary is proposed in this paper Then an interaction catenary-pantograph system capable of describing vertical vibration is established Taking into account the frictional characteristic between pantograph and catenary the Coulomb model is applied
Rate and state frictional and healing behavior of carbonate fault gouge explained using microphysical model An investigation into the role of time-dependent cohesion in interseismic fault restrengthening Dong Keun Kim Hai Woong Park Arnaud Caron Effect of Normal Contact Vibration on Nano-Scale Friction Lubricants 10 3390
2018-1-75 4 5 Engineering implications of vibration behavior The solutions listed in the preceding sections give us general guidelines for engineering a system to avoid (or create!) vibrations Preventing a system from vibrating: Suppose that we need to stop a structure or component from vibrating e g to stop a tall building from swaying
2008-6-10Here we present well-constrained experiments to investigate the frictional behavior of material from three locations worldwide: pyroclastic debris from Soufrire Hills volcano (SHV) Montserrat and from Stromboli Italy and lahar material from Mount St Helens (MSH) () These results provide detailed constitutive data to characterize the evolution of failure and to understand parameters that
2019-10-16Analytical investigation of the friction reduction performance of longitudinal vibration based on the modified elastoplastic contact model Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel Shock and Vibration Vol 2018 Models of mechanical properties/behavior of dry fibrous materials at various scales
2019-7-23Effect of ultrasonic vibration on frictional behavior of tool–chip interface: Finite element analysis and experimental study Show all authors Mohammad Lotfi A theoretical and experimental investigation of the tool-tip vibration and its influence upon surface generation in
2018-7-16Experimental Investigation of the Shear Behavior of EPS Geofoam Muhammad Imran Khan1 2 Mohamed A Meguid1 vibration barrier or seismic buffer for rigid structures [3] purely frictional fric-tional–adhesional and purely adhesional depending on the
Numerical investigation of the behavior of thin flexible membranes in interaction with a fluid domain M Makaremi Masouleh1 and G Wozniak1 1 Technische Universitt Chemnitz Faculty of Mechanical Engineering Institute of Mechanics and Thermodynamics Chair of Fluid Mechanics Chemnitz D
An investigation of the frictional behavior of snake skin on rigid styrofoam fixed on a sliding apparatus was done by Marvi and Hu These authors also revealed anisotropic frictional properties in forward and backward directions of conscious and unconscious snakes
2019-9-12Example of majorly viscous (a) majorly frictional (b) and frictional-viscous damper (c) 256 Journal of Low Frequency Noise Vibration and Active Control 38(2) During the damper system design phase several guidelines are recommended in order to better select and
The frictional and normal forces the contact length between the cutting tool and chip the coefficient of friction and the stress distribution are the influential parameters The behavior of the tool–chip interface in ultrasonic-vibration assisted cutting is different from conventional cutting and needs to be investigated
Activating drill string vibration is an effective means to mitigate the excessive drag encountered during drilling complex-structure wells However the Coulomb model cannot describe the sliding friction behavior between drill string and borehole rock with imposed axial vibrations To solve this problem a specially designed experimental setup was utilized to investigate the characteristics of
An experimental investigation is conducted to understand frictional behavior between human skin and different types of woods Wooden material has been tested with the normal load having the range of 6 5N to 13N The variation of μ has been remarked as μ rosewood μ pine μ teak μ sunmica Experimental observation shows that the rosewood
2020-7-16Investigation of the Vibration of a Blade With Friction Damper by HBM The friction damper has been widely used to reduce the resonant vibration of blades The most commonly used methods for studying the dynamic behavior of a blade with a friction damper are direct integration methods Although the harmonic bal
2019-7-30Stick-slip motion is highly nonlinear behavior which occurs at the point where the relative velocity between the moving bodies is near zero At zero relative velocity static friction dictates the behavior is is a multivalued function implying that the friction force will take any value in the range of 0 to 0 depending on the internal force
Mechanical joints have a significant influence on the dynamics of assembled structure due to its discontinuity uncertainty frictional contact and micro-slip along the interface To study the effect of mechanical interface on vibration behavior of industrial product it is necessary to capture vibration data and investigate modal properties
The outcome of analytical analysis can be used for vibration analysis by using MATLAB FFT and doing both stress and vibration analysis by using ABAQUS which is finite element software n to perform other analysis techniques such as coast-down tests or bump tests to verify a resonate condition a dynamic absorber was designed fabricated and
A lumped parameter model is presented for studying the dynamic interaction between two disks in relative rotational motion and in friction contact The contact elastic and dissipative characteristics are represented by equivalent stiffness and damping coefficient in the axial as well as torsional direction The formulation accounts for the coupling between the axial and angular motions by
2017-12-20The early achievements on disc brake system are attributed to the dry frictional stick-slip self-excited vibration [3-4] and unstable structural vibration [5-6] Stick-slip refers to a fluctuation of friction force or sliding velocity with time or sliding distance changing [ 7 ]
2 Friction coefficient Normal load Sliding velocity Duration of rubbing Corresponding author: Mohammad Asaduzzaman Chowdhury Professor Department of Mechanical Engineering Dhaka University of Engineering and Technology Gazipur Gazipur-1700 Bangladesh E-mail: asadzmn2003yahoo In the present study friction coefficients of different material pairs are
A lumped parameter model is presented for studying the dynamic interaction between two disks in relative rotational motion and in friction contact The contact elastic and dissipative characteristics are represented by equivalent stiffness and damping coefficient in the axial as well as torsional direction The formulation accounts for the coupling between the axial and angular motions by
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