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Paper Abstract and Keywords
Presentation 2011-11-18 09:45
Stress-Strain Response of Copper-Based Spring Materials under Forward and Reverse Deformations and Its Mathematical Description 2
Yasuhiro Hattori, Kingo Furukawa (AutoNetworks Lab.), Fusahito Yoshida (Hiroshima Univ.) EMD2011-91 Link to ES Tech. Rep. Archives: EMD2011-91
Abstract (in Japanese) (See Japanese page) 
(in English) The prediction of the force - displacement relation by the finite element method (FEM) is very important for the design of terminals in connectors. For simulation, an accurate model of stress-strain (s-s) responses of the materials is required. When the materials are deformed in the forward and then the reverse directions, almost all spring materials show different s-s responses between the two directions, due to the Bauschinger effect. This phenomenon makes simulation difficult because the s-s response depends on the prior deformation of the material. In this paper, the authors report s-s- response of Cu-Ni-Si copper alloy, which is widely applied to terminals of automobile application, by tension and compression testing. Its mathematical description with Yoshida-Uemori model, which is a constitutive model having high capability of describing the elastic and plastic behavior of cyclic deformation, have been also reported. The calculated s-s responses were in good agreement with the corresponding experimental results. Therefore, the use of this model for FE simulation would be recommended for a more accurate prediction of force-displacement relation of the spring.
Keyword (in Japanese) (See Japanese page) 
(in English) spring material / stress-strain response / Bauschinger effect / Yoshida-Uemori model / FEM / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 299, EMD2011-91, pp. 133-136, Nov. 2011.
Paper # EMD2011-91 
Date of Issue 2011-11-10 (EMD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EMD2011-91 Link to ES Tech. Rep. Archives: EMD2011-91

Conference Information
Committee EMD  
Conference Date 2011-11-17 - 2011-11-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Akita Univ. Tegata Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) International Session IS-EMD2011 
Paper Information
Registration To EMD 
Conference Code 2011-11-EMD 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Stress-Strain Response of Copper-Based Spring Materials under Forward and Reverse Deformations and Its Mathematical Description 2 
Sub Title (in English)  
Keyword(1) spring material  
Keyword(2) stress-strain response  
Keyword(3) Bauschinger effect  
Keyword(4) Yoshida-Uemori model  
Keyword(5) FEM  
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1st Author's Name Yasuhiro Hattori  
1st Author's Affiliation AutoNetworks Technologies, Ltd. (AutoNetworks Lab.)
2nd Author's Name Kingo Furukawa  
2nd Author's Affiliation AutoNetworks Technologies, Ltd. (AutoNetworks Lab.)
3rd Author's Name Fusahito Yoshida  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2011-11-18 09:45:00 
Presentation Time 20 minutes 
Registration for EMD 
Paper # EMD2011-91 
Volume (vol) vol.111 
Number (no) no.299 
Page pp.133-136 
#Pages
Date of Issue 2011-11-10 (EMD) 


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