Prediction of Local Strain and Hardness in Sheet Forming

Author:

Thomas Sven1,Müller Clemens1,Exner Eckart1

Affiliation:

1. Darmstadt University of Technology, Institute of Materials Science , Darmstadt , Germany

Abstract

Abstract A simulation procedure to predict local deformation and properties in deep drawing and other sheet forming processes has been developed, and model experiments were performed to verify the predicted local strain after various ways and degrees of deformation. A strip of aluminium alloy sheet was pulled through a gap between a die and a punch, and bent around a rounded edge and bent back again. Local strains in a cross section of the sheet were estimated from hardness values measured before and after bending by using the hardness – strain relationship obtained for the alloy from tests carried out in tension and compression and with alternating deformation. The finite element (FE) model using ABAQUS was adjusted to the experimental set-up as closely as possible. The agreement between predictions and experiments is in the range of experimental scatter and the general trends are excellently reproduced. However, the precision of hardness measurements is not high enough to check the reliability of the numerical predictions in detail.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Reference7 articles.

1. Tekkaya, A.E.: J. Mater. Process. Technol. 103 (2000) 14–22.

2. Tekkaya, A.E.: Hardness Measurements on Cold Formed Work-pieces, 3rd Workshop Simulation in der Umformtechnik, Institut für Statistik und Dynamik der Luft- und Raumfahrtkonstruktionen, University of Stuttgart (2000).

3. Herold, K.: Materialprüf. 40 (1998) 131–135.

4. Tietz, H.-D.; Dietz, M.: Neue Hütte 26 (1981) 109–112.

5. Nutting, J.; Pollard, G.: Mater. Sci. Technol. 3 (1987) 462–465.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3