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Degradation and fatigue of epoxy impregnated traction motors due to thermal and thermal induced mechanical stress - Part II : Thermal mechanical simulation of multiple wires due to evenly and unevenly distributed temperature

Huang, Zhe LU ; Reinap, Avo LU and Alaküla, Mats LU orcid (2016) 8th International Conference on Power Electronics, Machines and Drives PEMD 2016 2016.
Abstract

Part I of the study presents the importance and the analytical and numerical methods to perform a thermal- mechanical stress simulation with evenly distributed temperature for single wires. Part II of the study presents a method with thermal and mechanical conjugated simulations with unevenly distributed temperature for multiple wires and the results are compared to the structural simulation with evenly distributed temperature with the same geometry. Furthermore, based on the stress-fatigue curve of PAI insulation material, the stress-fatigue equation is fitted, which is adopted to estimate the lifetime due to thermal-mechanical stresses. This estimated life is compared to the estimated life based on Arrhenius Law and to the accelerated... (More)

Part I of the study presents the importance and the analytical and numerical methods to perform a thermal- mechanical stress simulation with evenly distributed temperature for single wires. Part II of the study presents a method with thermal and mechanical conjugated simulations with unevenly distributed temperature for multiple wires and the results are compared to the structural simulation with evenly distributed temperature with the same geometry. Furthermore, based on the stress-fatigue curve of PAI insulation material, the stress-fatigue equation is fitted, which is adopted to estimate the lifetime due to thermal-mechanical stresses. This estimated life is compared to the estimated life based on Arrhenius Law and to the accelerated lifetime test.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Coefficient of Thermal Expansion (CTE), Degradation, Finite Element Analysis (FEA), Motorette accelerated testing, Thermal-mechanical stress
host publication
IET Conference Publications
volume
2016
edition
CP684
publisher
Institution of Engineering and Technology
conference name
8th International Conference on Power Electronics, Machines and Drives PEMD 2016
conference location
Glasgow, United Kingdom
conference dates
2016-04-19 - 2016-05-21
external identifiers
  • scopus:85009152497
DOI
10.1049/cp.2016.0179
language
English
LU publication?
yes
id
83a8f548-5f2d-4c76-bd8d-f8660b49cc0a
date added to LUP
2017-04-25 08:42:48
date last changed
2025-04-04 15:05:01
@inproceedings{83a8f548-5f2d-4c76-bd8d-f8660b49cc0a,
  abstract     = {{<p>Part I of the study presents the importance and the analytical and numerical methods to perform a thermal- mechanical stress simulation with evenly distributed temperature for single wires. Part II of the study presents a method with thermal and mechanical conjugated simulations with unevenly distributed temperature for multiple wires and the results are compared to the structural simulation with evenly distributed temperature with the same geometry. Furthermore, based on the stress-fatigue curve of PAI insulation material, the stress-fatigue equation is fitted, which is adopted to estimate the lifetime due to thermal-mechanical stresses. This estimated life is compared to the estimated life based on Arrhenius Law and to the accelerated lifetime test.</p>}},
  author       = {{Huang, Zhe and Reinap, Avo and Alaküla, Mats}},
  booktitle    = {{IET Conference Publications}},
  keywords     = {{Coefficient of Thermal Expansion (CTE); Degradation; Finite Element Analysis (FEA); Motorette accelerated testing; Thermal-mechanical stress}},
  language     = {{eng}},
  publisher    = {{Institution of Engineering and Technology}},
  title        = {{Degradation and fatigue of epoxy impregnated traction motors due to thermal and thermal induced mechanical stress - Part II : Thermal mechanical simulation of multiple wires due to evenly and unevenly distributed temperature}},
  url          = {{http://dx.doi.org/10.1049/cp.2016.0179}},
  doi          = {{10.1049/cp.2016.0179}},
  volume       = {{2016}},
  year         = {{2016}},
}