scholarly journals Simulation and experimental validation of the dynamic behavior of an electromechanically actuated multiple-disk clutch

PAMM ◽  
2004 ◽  
Vol 4 (1) ◽  
pp. 171-172 ◽  
Author(s):  
Marco Treder ◽  
Christoph Woernle
Keyword(s):  
Dynamic Behavior ◽  
Experimental Validation

Prediction of Automotive Gearboxes Dynamic Behavior: Part A — Experimental Validation of a Global Numerical Model

2000 ◽  
Author(s):  
Karim Yakhou ◽  
Adeline Bourdon ◽  
Daniel Play
Keyword(s):  
Dynamic Behavior ◽  
Experimental Validation ◽  
Numerical Models ◽  
A Priori ◽  
Transmission Error ◽  
Operating Conditions ◽  
Step Procedure ◽  
Validation Procedure ◽  
Static Transmission Error

Abstract Numerical models have been developed to simulate the overall dynamic behavior of automotive gearboxes. They are based upon Finite Element Methods and their main originality is to integrate all the couplings between the various mechanical components of the gearboxes. The purpose of this study is to qualify these numerical models, and then, use them in order to determine gearboxes new design trends. In this first part of two companion papers, an experimental validation procedure has been implemented in two main stages. The first one is devoted to the study of mechanical systems under load but not-rotating. It is organized according to a “step by step” procedure. Starting with the shafts, the other components are gradually mounted and integrated into the mechanical system being considered. Thus, the modeling of the various parts has been validated and the existence of significant couplings has been confirmed. In the second stage of the procedure, the whole gearbox is studied under operating conditions. Preliminary tests at low rotational speeds allow the determination of the quasi-static transmission error under load. The results are used as input data for numerical simulations. Then tests are conducted at higher speeds with various resistant torques. Dynamic transmission error and dynamic loads transmitted by bearings are recorded. A good correlation between experiments and computations ensures the validity of the main a-priori modeling assumptions.

Cutting Fluid Mist Formation in Turning via Atomization: Part 2—Experimental Validation

2000 ◽  
Author(s):  
Y. Yue ◽  
K. L. Gunter ◽  
D. J. Michalek ◽  
J. W. Sutherland
Keyword(s):  
Dynamic Behavior ◽  
Mass Concentration ◽  
Experimental Validation ◽  
Theoretical Models ◽  
Cutting Fluid ◽  
Formation Mechanisms ◽  
Turning Process ◽  
Model Predictions ◽  
Simulation Results ◽  
Mist Formation

Abstract In Part 1 of this paper, models were developed to describe the formation mechanisms and dynamic behavior of cutting fluid mist. This part of the paper focuses on experimentally investigating mist formation during the turning process, and then simulating the dynamic behavior of the mist droplets, including the distribution and the mass concentration. Simulation results are compared to experimental measurements to validate the theoretical models presented in Part 1. It is seen that the model predictions adequately characterize the observed experimental behavior.

Influence of Nonideaities on the Performance of a Self-Balancing Rotor System

2005 ◽  
Author(s):  
Roland Horvath ◽  
George T. Flowers ◽  
Jerry Fausz
Keyword(s):  
Experimental Investigation ◽  
Dynamic Behavior ◽  
Experimental Validation ◽  
Research Study ◽  
The Self ◽  
Functional Capability ◽  
Analytical Simulation ◽  
Simulation Results ◽  
Automatic Balancing ◽  
The Ideal

An analytical, numerical and experimental investigation of the dynamic behavior of a four degree of freedom passive balancing system using pendulum balancers is presented. This work is an extension of previous studies which considered such automatic balancing systems and devices. It has previously been demonstrated analytically that a 4-DOF pendulum self-balancing system is capable, under idealized conditions, of exact radial balancing [10]. However, imperfections in the fabrication and assembly of such a system tend to compromise a number of the ideal modeling assumptions that were used to provide this result. The present research study examines the effects of a variety of such imperfections and their influence on the functional capability of the self-balancing system. Both analytical/simulation results and experimental validation are provided and discussed.

scholarly journals Motion Control and Implementation for an AC Servomotor System

2007 ◽  
Vol 2007 ◽  
pp. 1-6 ◽  
Author(s):  
L. Canan Dülger ◽  
Ali Kireçci
Keyword(s):  
Mathematical Model ◽  
Dynamic Behavior ◽  
Motion Control ◽  
Trajectory Tracking ◽  
Pid Controller ◽  
Experimental Validation ◽  
Experimental Setup ◽  
Tracking Problem ◽  
Proportional Integral Derivative ◽  
Proportional Integral Derivative Controller

This paper presents a study on trajectory tracking problem for an AC synchronous servomotor. A mathematical model for the system including AC synchronous servomotor, gearbox, and a load is developed to examine the systems dynamic behavior. The system is controlled by a traditional PID (proportional + integral + derivative) controller. The required values for the controller settings are found experimentally. Different motion profiles are designed, and trapezoidal ones are implemented. Thus, the experimental validation of the model is achieved using the experimental setup. The simulation and experimental results are presented. The tracking performance of an AC servomotor system is illustrated with proposed PID controller.

On the Modeling of Flexible-Link Planar Mechanisms: Experimental Validation of an Accurate Dynamic Model

2004 ◽  
Vol 126 (2) ◽  
pp. 365-375 ◽  
Author(s):  
Alessandro Gasparetto
Keyword(s):  
Mathematical Model ◽  
Dynamic Model ◽  
Dynamic Behavior ◽  
Experimental Validation ◽  
Test Case ◽  
Planar Mechanisms ◽  
Flexible Links ◽  
Multi Body ◽  
The Mathematical Model ◽  
Flexible Mechanisms

The experimental validation of an accurate dynamic model of flexible multi-body planar mechanisms is presented in this paper. The proposed mathematical model, which is valid for whatever planar mechanism with any number of flexible links, accounts for the geometric and inertial nonlinearities of the mechanism, and considers coupling effects among rigid-body and elastic motion as well. In order to experimentally validate the dynamic model, a flexible five-bar planar linkage actuated by two electric motors is employed as a test case. The experimentally measured deformations and accelerations of the flexible links are compared with the numerical results obtained by simulating the system dynamic behavior through the mathematical model. It turns out that the experimental results are in good agreement with the numerical ones, thus proving that the dynamical model proposed is very effective in the difficult task of accurately representing the dynamic behavior of flexible mechanisms.

Detailed Experimental Validation of the Thermal and Fluid Dynamic Behavior of Hermetic Reciprocating Compressors

2004 ◽  
Vol 10 (3) ◽  
pp. 291-306 ◽  
Author(s):  
Joaquim Rigola ◽  
Gustavo Raush ◽  
Carlos David Perez-Segarra ◽  
Asseni Oliva
Keyword(s):  
Dynamic Behavior ◽  
Experimental Validation ◽  
Fluid Dynamic

Character and Behavior of Mist Generated by Application of Cutting Fluid to a Rotating Cylindrical Workpiece, Part 2: Experimental Validation

2004 ◽  
Vol 126 (3) ◽  
pp. 426-434 ◽  
Author(s):  
J. Sun ◽  
C. Ju ◽  
Y. Yue ◽  
K. L. Gunter ◽  
D. J. Michalek ◽  
...  
Keyword(s):  
Dynamic Behavior ◽  
Mass Concentration ◽  
Experimental Validation ◽  
Droplet Size Distribution ◽  
Cutting Fluid ◽  
Formation Mechanisms ◽  
Model Predictions ◽  
Cylindrical Workpiece ◽  
Simulation Results ◽  
And Behavior

In Part 1 of this paper a model was developed to describe the formation mechanisms and dynamic behavior of cutting fluid mist. This part of the paper focuses on an experimental investigation of the mist generated by the interaction of the fluid with the rotating cylindrical workpiece during a turning operation and the simulation of the dynamic behavior of the mist droplets, resulting in the prediction of the droplet size distribution and the mass concentration within the machining environment. These simulation results are compared to experimental measurements in order to validate the theoretical model presented in Part 1 of the paper. It is observed that the model predictions accurately characterize the observed experimental behavior.

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