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27 June 2002 Experimental analysis of lead behavior
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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.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alessandro Beghini, Masato Abe, Yozo Fujino, and Junji Yoshida "Experimental analysis of lead behavior", Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); https://doi.org/10.1117/12.472668
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