Estimation of elastoplastic parameters via weighted FEMU and integrated-DIC. Mathieu, F.; Leclerc, H.; Hild, F.; and Roux, S. Experimental Mechanics, 55(1):105-119, 2015.
abstract   bibtex   
? 2014, Society for Experimental Mechanics.DIC-based identification of the constitutive parameters of an elastoplastic law is addressed both from a general viewpoint, and applied to the particular case of dog-bone sample made of commercially pure titanium and subjected to tensile loading. A two-step procedure (Digital Image Correlation ? DIC ? followed by weighted Finite Element Method Updating ? FEMU) is first presented. These two steps can be merged into a single-step procedure (i.e., Integrated-DIC or I-DIC). In both cases, the elastoplastic computations are performed with a commercial code (i.e., non-intrusive identification). When the suited weighting of FEMU is taken into account, which is based on DIC-processed image noise, both I-DIC and FEMU methods provide similar results. It is shown that the addressed experimental case requires the use of static (load) information to get precise estimates of the sought parameters.
@article{
 title = {Estimation of elastoplastic parameters via weighted FEMU and integrated-DIC},
 type = {article},
 year = {2015},
 identifiers = {[object Object]},
 keywords = {Covariance,Digital image correlation,Identification,Integrated approach,Ramberg-Osgood model},
 pages = {105-119},
 volume = {55},
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 created = {2017-05-12T08:30:42.611Z},
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 last_modified = {2017-05-16T06:48:43.295Z},
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 citation_key = {Mathieu2015},
 source_type = {article},
 abstract = {? 2014, Society for Experimental Mechanics.DIC-based identification of the constitutive parameters of an elastoplastic law is addressed both from a general viewpoint, and applied to the particular case of dog-bone sample made of commercially pure titanium and subjected to tensile loading. A two-step procedure (Digital Image Correlation ? DIC ? followed by weighted Finite Element Method Updating ? FEMU) is first presented. These two steps can be merged into a single-step procedure (i.e., Integrated-DIC or I-DIC). In both cases, the elastoplastic computations are performed with a commercial code (i.e., non-intrusive identification). When the suited weighting of FEMU is taken into account, which is based on DIC-processed image noise, both I-DIC and FEMU methods provide similar results. It is shown that the addressed experimental case requires the use of static (load) information to get precise estimates of the sought parameters.},
 bibtype = {article},
 author = {Mathieu, Florent and Leclerc, Hugo and Hild, François and Roux, Stéphane},
 journal = {Experimental Mechanics},
 number = {1}
}
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