Deformation and compatibility for elasto-plastic micropolar materials with application to geomechanical problems

1998 ◽  
Vol 08 (PR8) ◽  
pp. Pr8-127-Pr8-134 ◽  
Author(s):  
W. Ehlers ◽  
S. Diebels ◽  
W. Volk
Keyword(s):  
Micropolar Materials

Optimum structures of micropolar materials depending on elastic constants

2014 ◽  
pp. 841-845
Author(s):  
Y Arimitsu ◽  
Z Wu ◽  
Y Sogabe ◽  
T Kimura
Keyword(s):  
Elastic Constants ◽  
Micropolar Materials

scholarly journals Scale Effects in Orthotropic Composite Assemblies as Micropolar Continua: A Comparison between Weak- and Strong-Form Finite Element Solutions

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 758 ◽  
Author(s):  
Lorenzo Leonetti ◽  
Nicholas Fantuzzi ◽  
Patrizia Trovalusci ◽  
Francesco Tornabene
Keyword(s):  
Finite Element ◽  
Scale Effects ◽  
Kinematic Model ◽  
Elastic Response ◽  
Actual Behavior ◽  
Orthotropic Composite ◽  
Additional Degree ◽  
Micropolar Continua ◽  
Orthotropic Composites ◽  
Micropolar Materials

The aim of the present work was to investigate the mechanical behavior of orthotropic composites, such as masonry assemblies, subjected to localized loads described as micropolar materials. Micropolar models are known to be effective in modeling the actual behavior of microstructured solids in the presence of localized loads or geometrical discontinuities. This is due to the introduction of an additional degree of freedom (the micro-rotation) in the kinematic model, if compared to the classical continuum and the related strain and stress measures. In particular, it was shown in the literature that brick/block masonry can be satisfactorily modeled as a micropolar continuum, and here it is assumed as a reference orthotropic composite material. The in-plane elastic response of panels made of orthotropic arrangements of bricks of different sizes is analyzed herein. Numerical simulations are provided by comparing weak and strong finite element formulations. The scale effect is investigated, as well as the significant role played by the relative rotation, which is a peculiar strain measure of micropolar continua related to the non-symmetry of strain and work-conjugated stress. In particular, the anisotropic effects accounting for the micropolar moduli, related to the variation of microstructure internal sizes, are highlighted.

Optimum topologies of micropolar materials depending on elastic constants

2017 ◽  
Vol 2017.30 (0) ◽  
pp. 066
Author(s):  
Kenta Suzuki ◽  
Yutaka Arimitsu ◽  
Yuji Sogabe ◽  
Zhiqiang Wu
Keyword(s):  
Elastic Constants ◽  
Micropolar Materials

Particulate random composites homogenized as micropolar materials

Meccanica ◽  
2014 ◽  
Vol 49 (11) ◽  
pp. 2719-2727 ◽  
Author(s):  
Patrizia Trovalusci ◽  
Maria Laura De Bellis ◽  
Martin Ostoja-Starzewski ◽  
Agnese Murrali
Keyword(s):  
Random Composites ◽  
Micropolar Materials

Edge dislocation with surface flexural resistance in micropolar materials

2019 ◽  
Vol 230 (5) ◽  
pp. 1513-1527 ◽  
Author(s):  
Alireza Gharahi ◽  
Peter Schiavone
Keyword(s):  
Edge Dislocation ◽  
Flexural Resistance ◽  
Micropolar Materials
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