Experimental investigation of higher-order homogenization schemes under large strain
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- 作者：J. Marty ; jeremy.marty@insa-lyon.fr" class="auth_mail" title="E-mail the corresponding author ; J. Ré ; thoré ; A. Combescure
- 关键词：Large strain ; Multiscale method ; Higher order continuum ; Homogenization ; Digital image correlation
- 刊名：International Journal of Solids and Structures
- 出版年：2016
- 出版时间：15 June 2016
- 年：2016
- 卷：88-89
- 期：Complete
- 页码：263-273
- 全文大小：2747 K
文摘
Multiscale methods and homogenization techniques are usually compared to full field simulations. The accuracy of the full field simulations is well controlled in the linear elastic regime and for small strain. With non-linear behavior, large strain or multi-axial strain states the comprehension is hampered by the lack of experimental results. In this study, the way to enforce the microscopic boundary conditions from the macroscopic scale is investigated by comparison to experimental results. A series of tests has been carried out on a model multiscale structure over which the displacement field is captured at microscopic and macroscopic scales. These experimental results allow to analyze the results of different homogenization methods such as classical or higher order ones. The study focuses and exhibits different conclusions about the unit cells with periodic or non-periodic kinematics.