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Proceedings Paper

Experimental analysis of lead behavior
Author(s): Alessandro Beghini; Masato Abe; Yozo Fujino; Junji Yoshida
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Paper Abstract

Lead attracts large attentions for its applications in Civil Engineering as constitutive element in base isolators. However, the mechanical properties of this material are still not well known. This is due to its typical behavior in testing characterized by the large strain generated (more than 10%), the strain rate dependency, the growth of voids inside the material, the necking after the peak of the stress and the localization of deformations. In this research, tests are performed to collect data for the development of lead constitutive model. The localization of deformations is analyzed by applying the image processing technique, which is improved with respect to previous study as concerning the perspective definition of the material point initial grid, the detailed mesh in the stress concentration area, the increased efficiency and accuracy in calculating the strain field, the new deformation modes for the template used in matching two pictures and the attention to local torsional effect. After the post-processing of the data, the 3D displacement field is visualized and the stress-strain relation is calculated.

Paper Details

Date Published: 27 June 2002
PDF: 11 pages
Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); doi: 10.1117/12.472668
Show Author Affiliations
Alessandro Beghini, Univ. of Tokyo (Japan)
Masato Abe, Univ. of Tokyo (Japan)
Yozo Fujino, Univ. of Tokyo (Japan)
Junji Yoshida, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 4697:
Smart Structures and Materials 2002: Damping and Isolation
Gregory S. Agnes, Editor(s)

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