scholarly journals Characteristics and Analysis of an Eddy Current Shock Absorber Damper Using Finite Element Analysis

Actuators ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 77
Author(s):  
Tamer M. Abdo ◽  
Ahmed A. Huzayyin ◽  
Ahmed A. Abdallah ◽  
Amr A. Adly
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Eddy Current ◽  
Shock Absorber ◽  
Iron Core ◽  
Element Analysis ◽  
Electromagnetic Damping ◽  
Eddy Current Damper ◽  
Damping Systems ◽  
Steady State Performance

In the paper a model is developed for a proposed eddy current damper using finite element analysis. Several damper configurations are studied and its characteristics are analyzed. The steady state performance for the configurations is compared to reach a design with an acceptable performance for the eddy current damper. Furthermore, the proposed designs performance are compared with the traditional damper performance. It was found that the best two designs to achieve the targeted performance were to have an iron core damper or an iron core with an aluminum sleeve. Those two designs are economical and simple while achieving acceptable performance when compared to traditional dampers and other electromagnetic damping systems.

Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
Jacob Laborenz ◽  
Malte Krack ◽  
Lars Panning ◽  
Jörg Wallaschek ◽  
Markus Denk ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Eddy Current ◽  
Dynamic Performance ◽  
Forced Response ◽  
Element Analysis ◽  
Transient Electromagnetic ◽  
Eddy Current Damper ◽  
Mechanical Damping ◽  
Turbine Blading

In the dynamics of turbomachinery, the mechanical damping of the blading has been the focus of research for the last decades to improve the dynamic performance in terms of high cycle fatigue issues. In addition, an increased mechanical damping can produce a higher flutter safety margin such that stable operation conditions are achievable in a bigger range. Hence, novel damping techniques are considered besides the well known friction based damping devices. In this paper, an extended analysis of the eddy current based damping device for a last stage steam turbine blading presented in GT2009-59593 is conducted. A transient electromagnetic finite element analysis of the eddy current damper is performed, and the resulting damping forces are compared to their analytical solution. Parameter studies are carried out, and equivalent damping factors are calculated. Furthermore, for the validation of the finite element model, a test rig was built that allows for the direct measurement of damping forces when forcing a sinusoidal relative motion. Forced response measurements and simulations are used to demonstrate its dynamic performance and predictability.

Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results

2011 ◽  
Author(s):  
Jacob Laborenz ◽  
Malte Krack ◽  
Lars Panning ◽  
Jo¨rg Wallaschek ◽  
Markus Denk ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Eddy Current ◽  
Dynamic Performance ◽  
Forced Response ◽  
Element Analysis ◽  
Transient Electromagnetic ◽  
Eddy Current Damper ◽  
Mechanical Damping ◽  
Turbine Blading

In the dynamics of turbomachinery the mechanical damping of the blading is in the focus of research for the last decades to improve the dynamic performance in terms of high cycle fatigue issues. Besides that an increased mechanical damping can produce a higher flutter safety margin such that stable operation conditions are achievable in a bigger range. Hence, novel damping techniques are considered besides the well known friction based damping devices. In this paper an extended analysis of the eddy current based damping device for a last stage steam turbine blading presented in GT2009-59593 is conducted. A transient electromagnetic finite element analysis of the eddy current damper is performed and the resulting damping forces are compared to their analytical solution. Parameter studies are carried out and equivalent damping factors are calculated. Furthermore, for the validation of the finite element model a test rig was built which allows for the direct measurement of damping forces when forcing a sinusoidal relative motion. Forced response measurements and simulations are used to demonstrate its dynamic performance and predictability.

Resistive loss considerations in the finite element analysis of eddy current attenuation in anisotropic conductive composites

2021 ◽  
Vol 119 ◽  
pp. 102403
Author(s):  
Jun Cheng ◽  
Buyun Wang ◽  
Dezhang Xu ◽  
Jinhao Qiu ◽  
Toshiyuki Takagi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Eddy Current ◽  
Element Analysis ◽  
Conductive Composites ◽  
The Finite Element Analysis

scholarly journals Design and Analysis of Dual Mover Multi-Tooth Permanent Magnet Flux Switching Machine for Ropeless Elevator Applications

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 81
Author(s):  
Atif Zahid ◽  
Faisal Khan ◽  
Naseer Ahmad ◽  
Irfan Sami ◽  
Wasiq Ullah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Iron Core ◽  
Analytical Prediction ◽  
Element Analysis ◽  
Design Structure ◽  
Finite Element Analysis Simulation ◽  
Analysis Package ◽  
Flux Switching Motor

A dual mover yokeless multi-tooth (DMYMT) permanent magnet flux switching motor (PM-FSM) design is presented in this article for ropeless elevator applications. The excitation sources, including a field winding and permanent magnet, are on the short mover in the proposed design structure, whereas the stator is a simple slotted iron core, thus reducing the vertical transportation system cost. The operational principle of the proposed DMYMT in PM-FSM is introduced. The proposed dual mover yokeless multi-tooth Permanent Magnet Flux Switching Motor is analyzed and compared for various performance parameters in a Finite Element Analysis package. The proposed machine has high thrust force and cost-effectiveness compared to conventional dual permanent magnet motor. Finally, this paper also develops an analytical model for the proposed structure, validated by comparing it with Finite Element Analysis simulation results. Results show good agreement between analytical prediction and Finite Element Analysis results.

Optimal Design of a Double-Sided Slotted Iron Core Type PMLSM with Manufacturing Considerations

2010 ◽  
Vol 670 ◽  
pp. 235-242 ◽  
Author(s):  
Y.W. Zhu ◽  
D.S. Kim ◽  
D.H. Kooa ◽  
Y.H. Cho
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Response Surface Methodology ◽  
Numerical Calculation ◽  
Optimal Design ◽  
Iron Core ◽  
Two Dimensional ◽  
Element Analysis ◽  
Detent Force ◽  
Calculation Results

This paper investigates an optimal design of a double-sided slotted iron core type permanent magnet linear synchronous motor (PMLSM) using for ropeless elevator system. To obtain the optimal structure, the combination of response surface methodology (RSM) and two dimensional (2D) finite element analysis (FEA), which can solve the problem effectively without much time consuming, is utilized to investigate the PMLSM characteristics. Moreover, the detent force is more detailed analyzed with the manufacturing consideration. In final some numerical calculation results are reported to validate the applicability of this double-sided slotted iron core type PMLSM in ropeless elevator system. Introduction

Sign in / Sign up

Export Citation Format

Share Document