### Amthor Arvid Hausotte Tino Ament Christoph Li Pu

simple dynamic friction model which allows a model-based estimation of the friction force in combination with the system inertia against displacement. Experiments in the pre-sliding and sliding friction regimes are conducted on an experimental setup. A hybrid two-stage parameter estimation algorithm is used to fit

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A discrete element method (DEM) also called a distinct element method is any of a family of numerical methods for computing the motion and effect of a large number of small particles. Though DEM is very closely related to molecular dynamics the method is generally distinguished by its inclusion of rotational degrees-of-freedom as well as stateful contact and often complicated geometries

Get Price### Discrete-Time Elasto-Plastic Friction EstimationCORE

Discrete-Time Elasto-Plastic Friction Estimation . By Vincent Hayward Friedhelm Altpeter Member and Pierre E. Dupont Senior Member. Download PDF (990 KB) Abstract. Abstract — For control applications involving small displacements and velocities friction modeling and compensation can be very important especially around velocity reversal

Get Price### Friction Models and Friction Compensation

Friction is strongly inﬂuenced by contaminations. There is a wide range of physi-cal phenomena that cause friction this includes elastic and plastic deformations ﬂuid mechanics and wave phenomena and material sciences see J45 53 9 10K. Friction was studied extensively in

Get Price### Discrete element simulation of elasto-plastic shock waves

In the present work discrete element method is used to simulate elasto-plastic shock wave propagation in a homogeneous Paper A and in non-homogeneous Paper B chains of spherical particles. The eects of shock wave on particle deformation and their movement and on

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Nov 01 2017 · To achieve this goal a feedforward friction estimation and compensation system based on the ElastoPlastic friction model combined with a two-degree-of-freedom control system is applied to the drive axes. In this contribution the control system for one of the axes in the setup a linear drive axis is regarded in detail.

Get Price### Discrete-Time Elasto-Plastic Friction EstimationCORE

Discrete-Time Elasto-Plastic Friction Estimation . By Vincent Hayward Friedhelm Altpeter Member and Pierre E. Dupont Senior Member. Download PDF (990 KB) Abstract. Abstract — For control applications involving small displacements and velocities friction modeling and compensation can be very important especially around velocity reversal

Get Price### (PDF) Interactive Simulation of rigid body interaction

In order to overcome this problem Dupont et al. 1 proposed a class of elasto-plastic models described by the equations (1) where is the average bristle deflection is the relative velocity between the two surfaces and is the resulting friction force.

Get Price### Decomposition of stiffness and friction tangential contact

Sep 15 2017 · Discrete-time elasto-plastic friction estimation IEEE Trans. Control Syst. Technol. 17 ( 2009 ) pp. 688696 10.1109/TCST.2008. CrossRef View Record in Scopus Google Scholar

Get Price### Lecture 9 Deformation Analysis and Elasto-Plastic Yield

An elasto-plastic model allows and solves for yielding within the model (and the resulting displacements that arise). All plastic models potentially involve some degree of permanent path-dependent deformations. Once an element has reached it s yield state further increases in stress must be supported by neighbouring elements which in turn may

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elasto-plastic models predict the same qualitative behavior as the plastic model 12 . Section 2 describes the continuous-time model and Sec. 3 its discretization. Section 4 discusses two real-time pd1 modules that implement of the model and Sec. 5 presents applications to the bowed string and to more general friction based sound effects. 2

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Nov 01 2017 · To achieve this goal a feedforward friction estimation and compensation system based on the ElastoPlastic friction model combined with a two-degree-of-freedom control system is applied to the drive axes. In this contribution the control system for one of the axes in the setup a linear drive axis is regarded in detail.

Get Price### Discrete-Time Elasto-Plastic Friction EstimationCORE

Download PDF Sorry we are unable to provide the full text but you may find it at the following location(s) http //cim.mcgill.ca/ hapt (external link)

Get Price### Discrete element simulation of elasto-plastic shock waves

In the present work discrete element method is used to simulate elasto-plastic shock wave propagation in a homogeneous Paper A and in non-homogeneous Paper B chains of spherical particles. The eects of shock wave on particle deformation and their movement and on

Get Price### EGEE-520 DEM

Adhesive elasto-plastic normal contact model 17 Ø Takes into account plastic deformation Ø The four parameters in the friction law are k t u s ɸ = u s/u d and t Discrete time

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HAYWARD V ARMSTRONG B S R ALTPETER F DUPONT P E. Discrete-time elasto-plastic friction estimation J . IEEE Transactions on Control Systems Technology 2009

Get Price### Single State Elastoplastic Friction Models

chine tool experimental data is used to compare the LuGre and elasto-plastic models. Conclusions appear in Section V. II. SINGLE STATE MODELS Consider the class of friction models involving a single state vari-able in which rigid body displacement x is decomposed into elastic (re-versible) and plastic (irreversible) components z and w

Get Price### Micromechanical analysis of cohesive granular materials

May 21 2014 · Abstract An adhesive elasto-plastic contact model for the discrete element method with three dimensional non-spherical particles is proposed and investigated to achieve quantitative prediction of cohesive powder flowability. Simulations have been performed for uniaxial consolidation followed by unconfined compression to failure using this model.

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without Stribeck effect 4 . Friction estimation based on the Elasto-Plastic model 5 has been investigated 6 . The Generalized Maxwell-Slip (GMS) model 7 is known to be able to describe all essential friction characteristics w hich is not the case for the above mentioned models. Identic ation and compensation of friction based on the GMS

Get Price### Discrete-Time Elasto-Plastic Friction EstimationCORE

Discrete-Time Elasto-Plastic Friction Estimation . In this paper for this class of models discrete estimation for friction force compensation is derived. The estimator uses only position and velocity (not force) measurements and integrates over space rather than time yielding a discrete-time implementation that is robust to issues of

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viscous friction. Moreover to avoid a nonphysical drift artifact that affects the LuGre model Fig. 1 Contact for friction characteristic estimation elasto-plastic model 8 etc. have been proposed. Though these dynamic models can declare truly friction phenomenon in theory those parameters cannot be acquired easily. In other words because

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Related papers. Page number / 9 9

Get Price### Decomposition of stiffness and friction tangential contact

Sep 15 2017 · Discrete-time elasto-plastic friction estimation IEEE Trans. Control Syst. Technol. 17 ( 2009 ) pp. 688696 10.1109/TCST.2008. CrossRef View Record in Scopus Google Scholar

Get Price### Modeling of Vickers Indentation of TiAl Alloys

elasto-plastic/contact indentation model. As this module does not deal with time dependent contact problems in combination with the elastoplastic solver and friction effect the parametric segregated solver 5 6 7 has to be used. This solver splits the overall solution process into two

Get Price### Single State Elastoplastic Friction Models

chine tool experimental data is used to compare the LuGre and elasto-plastic models. Conclusions appear in Section V. II. SINGLE STATE MODELS Consider the class of friction models involving a single state vari-able in which rigid body displacement x is decomposed into elastic (re-versible) and plastic (irreversible) components z and w

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friction it is cumbersome to deal with zero velocity as it triggers a switching behavior complicating its model in discrete-time. Therefore most solutions for simulating this effect in discrete-time suffer from chattering 9 . Several models have been proposed to describe the friction and its associated phenomena from simplistic models like

Get Price### Single State Elastoplastic Friction Models

chine tool experimental data is used to compare the LuGre and elasto-plastic models. Conclusions appear in Section V. II. SINGLE STATE MODELS Consider the class of friction models involving a single state vari-able in which rigid body displacement x is decomposed into elastic (re-versible) and plastic (irreversible) components z and w

Get Price### THE RHEOLOGICAL-DYNAMICAL HARMONIC OSCILLATOR

rheological model and the discrete dynamical model with viscous damping and is aimed to be used for the analysis of inelastic deforming of materials and structures. In this presentation the coupled initial conditions of the stress-strain state of the rheological visco-elasto-plastic model are applied for the study of discrete dynamics system.

Get Price### Friction parameter identification and compensation using

Nov 01 2017 · To achieve this goal a feedforward friction estimation and compensation system based on the ElastoPlastic friction model combined with a two-degree-of-freedom control system is applied to the drive axes. In this contribution the control system for one of the axes in the setup a linear drive axis is regarded in detail.

Get Price### (PDF) Elasto-plastic friction model contact compliance

Elasto-plastic friction model contact compliance and stiction a test apparatus is designed and experimental procedures are developed for the estimation of the friction parameters of linear

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