Classical Preisach model of hysteretic behavior in a da Vinci instrument

2016 ◽  
Author(s):  
Farshad Anooshahpour ◽  
Ilia G. Polushin ◽  
Rajni V. Patel
Keyword(s):  
Da Vinci ◽  
Hysteretic Behavior ◽  
Preisach Model

Hysteretic Behaviors of Yield Stress in Smart ER/MR Materials: Experimental Results

2006 ◽  
Vol 326-328 ◽  
pp. 1459-1462
Author(s):  
Young Min Han ◽  
Quoc Hung Nguyen ◽  
Seung Bok Choi ◽  
Kyung Su Kim
Keyword(s):  
Yield Stress ◽  
Smart Materials ◽  
Hysteretic Behavior ◽  
Preisach Model ◽  
Hysteresis Model ◽  
First Order ◽  
Input Field ◽  
Nonlinear Hysteresis ◽  
Field Dependent ◽  
Discrete Manner

This paper experimentally investigates the hysteretic behaviors of yield stress in electrorheological (ER) and magnetorheological (MR) materials which are known as smart materials. As a first step, the PMA-based ER material is prepared by dispersing the chemically synthesized polymethylaniline (PMA) particles into non-conducting oil. For the MR material, commercially available one (Lord MRF-132LD) is chosen for the test. Using the rheometer, the torque resulting from the shear stress of the ER/MR materials is measured, and then the yield stress is calculated from the measured torque. In order to describe the hysteretic behavior of the fielddependent yield stress, a nonlinear hysteresis model of the ER/MR materials is formulated between input (field) and output (yield stress). Subsequently, the Preisach model is identified using experimental first order descending (FOD) curves of yield stress in discrete manner. The effectiveness of the identified hysteresis model is verified in time domain by comparing the predicted field-dependent yield stress with the measured one.

scholarly journals Preisach Elasto-Plastic Model for Mild Steel Hysteretic Behavior-Experimental and Theoretical Considerations

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3546
Author(s):  
Dragoslav Sumarac ◽  
Petar Knezevic ◽  
Cemal Dolicanin ◽  
Maosen Cao
Keyword(s):  
Cyclic Loading ◽  
Mild Steel ◽  
Heat Dissipation ◽  
Split Ring Resonator ◽  
Theoretical Background ◽  
Hysteretic Behavior ◽  
Preisach Model ◽  
Predicting Behavior ◽  
Theoretical Considerations ◽  
Theoretical Results

The Preisach model already successfully implemented for axial and bending cyclic loading is applied for modeling of the plateau problem for mild steel. It is shown that after the first cycle plateau disappears an extension of the existing Preisach model is needed. Heat dissipation and locked-in energy is calculated due to plastic deformation using the Preisach model. Theoretical results are verified by experiments performed on mild steel S275. The comparison of theoretical and experimental results is evident, showing the capability of the Presicah model in predicting behavior of structures under cyclic loading in the elastoplastic region. The purpose of this paper is to establish a theoretical background for embedded sensors like regenerated fiber Bragg gratings (RFBG) for measurement of strains and temperature in real structures. In addition, the present paper brings a theoretical base for application of nested split-ring resonator (NSRR) probes in measurements of plastic strain in real structures.

Hysteretic behavior of rectangular tube (box) sections based on Preisach model

2012 ◽  
Vol 82 (10-11) ◽  
pp. 1663-1673 ◽  
Author(s):  
Dragoslav Šumarac ◽  
Zoran Petrašković
Keyword(s):  
Hysteretic Behavior ◽  
Preisach Model ◽  
Rectangular Tube

scholarly journals Hysteretic behavior modeling of elastoplastic materials

2008 ◽  
Vol 35 (1-3) ◽  
pp. 287-304
Author(s):  
Dragoslav Sumarac ◽  
Bojan Medjo ◽  
Natasa Trisovic
Keyword(s):  
Plastic Material ◽  
Rectangular Cross Section ◽  
Axial Loading ◽  
Hysteretic Behavior ◽  
Behavior Modeling ◽  
Cyclic Behavior ◽  
Preisach Model ◽  
Viscous Effects ◽  
Rectangular Tube ◽  
History Of

In the present paper the Preisach model of hysteresis is applied to model cyclic behavior of elasto-plastic material. Rate of loading and viscous effects will not be considered. The problem of axial loading of rectangular cross section and cyclic bending of rectangular tube (box) will be studied in details. Hysteretic stress-strain loop for prescribed history of stress change is plotted for material modeled by series connection of three unite element. Also moment-curvature hysteretic loop is obtained for a prescribed curvature change of rectangular tube (box). One chapter of the paper is devoted to results obtained by FEM using Finite Element Code ABAQUS. All obtained results clearly show advantages of the Preisach model for describing cyclic behavior of elasto-plastic material.

LPV Gain Scheduling Control of Hysteresis on an SMA Wire System

2009 ◽  
Author(s):  
Atilla Kilicarslan ◽  
Gangbing Song ◽  
Karolos M. Grigoriadis
Keyword(s):  
Control Method ◽  
Full Range ◽  
Hysteresis Loops ◽  
Parametric Uncertainty ◽  
Experimental System ◽  
Gain Scheduling ◽  
Hysteretic Behavior ◽  
Preisach Model ◽  
Lpv Control ◽  
Gain Scheduling Control

In this work, a Linear Parameter-Varying (LPV) control method is used to compensate the hysteretic behavior of a Shape Memory Alloy (SMA) wire. Controller is implemented on an experimental system which consists of a pre-tension spring and a mass actuated with a thin SMA wire. The hysteretic characteristic of the SMA wire is modeled using the Preisach model and the model is verified both for the major and minor hysteresis loops. The small signal linear gain of the Preisach model is used as a scheduling stiffness variable. The parameter-dependent controller is scheduled based on the real time measurement of the stiffness variable. An H∞ controller is also synthesized by representing the hysteresis as a parametric uncertainty and comparisons are made with LPV gain scheduling controllers using similar weights for both controllers. Experimental trajectory tracking results show that the LPV Gain Scheduling controller has a better response and the hysteresis uncertainty is compensated for the full range of stiffness variability.

Hysteresis in a Capillary Condensation System

1994 ◽  
Vol 366 ◽  
Author(s):  
M. P. Lilly ◽  
R. B. Hallock
Keyword(s):  
Experimental Data ◽  
Porous Material ◽  
Capillary Condensation ◽  
Hysteretic Behavior ◽  
Preisach Model

ABSTRACTWe report measurements of the hysteretic capillary condensation of liquid 4He into the porous material Nuclepore. Results are presented for global and hysteretic behavior for 300 Å diameter pores. These observations deviate from the predictions of the Preisach model of independent hysteresis domains. By modifying the Preisach model so as to restrict the ability of some of the pores to drain normally we are able to model many features of the experimental data.

Replication of Internal Biological Surfaces

1972 ◽  
Vol 30 ◽  
pp. 308-309
Author(s):  
J. A. Nowell ◽  
J. Pangborn ◽  
W. S. Tyler
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Rat Lung ◽  
Tubular Structures ◽  
Cerebral Ventricles ◽  
Internal Surfaces ◽  
Biological Surfaces ◽  
Dog Kidney ◽  
Lung And Kidney ◽  
Scanning Electron

Leonardo da Vinci in the 16th century, used injection replica techniques to study internal surfaces of the cerebral ventricles. Developments in replicating media have made it possible for modern morphologists to examine injection replicas of lung and kidney with the scanning electron microscope (SEM). Deeply concave surfaces and interrelationships to tubular structures are difficult to examine with the SEM. Injection replicas convert concavities to convexities and tubes to rods, overcoming these difficulties.Batson's plastic was injected into the renal artery of a horse kidney. Latex was injected into the pulmonary artery and cementex in the trachea of a cat. Following polymerization the tissues were removed by digestion in concentrated HCl. Slices of dog kidney were aldehyde fixed by immersion. Rat lung was aldehyde fixed by perfusion via the trachea at 30 cm H2O. Pieces of tissue 10 x 10 x 2 mm were critical point dried using CO2. Selected areas of replicas and tissues were coated with silver and gold and examined with the SEM.

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