A micromechanics-based mesomodel for unidirectional laminates in compression up to failure

被引：14

作者：

Feld, Nicolas ^{[2
]}

Allix, Olivier ^{[1
]}

Baranger, Emmanuel ^{[1
]}

Guimard, Jean-Mathieu ^{[3
]}

机构：

[1] UniverSud Paris, LMT Cachan, Cachan, France

[2] DRD DRIA DSTF MSMX MCSP, LMT Cachan PSA Peugeot Citroen, F-78943 Velizy Villacoublay, France

[3] EADS France, Mech Modelling Team, Suresnes, France

来源：

JOURNAL OF COMPOSITE MATERIALS | 2012年 / 46卷 / 23期

关键词：

Compressive failure; microbuckling; modeling; homogenization; fragmentation; FIBER COMPOSITES; COMPUTATIONAL HOMOGENIZATION; MECHANICAL-BEHAVIOR; SPECIMEN SIZE; STORED ENERGY; KINK BANDS; STRENGTH; DAMAGE; CARBON; PREDICTION;

D O I：

10.1177/0021998311434170

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This study introduces an enriched description of a mesomodel for laminates in compression. The improvements are based on previous micromechanical studies regarding failure by kinking under combined compression and shear. The homogenization of the micromechanical response is based on an equivalence in recoverable, stored, and dissipated energy. This leads to a modified constitutive relation at the mesoscale which is probabilistic, i.e., parametrized by a measure of the statistical fiber misalignment, and features a nonlinear elastic potential in compression. The identification procedure is precisely detailed and applied on a T300/BSL-914C UD ply. It is shown that, thanks to simple deterministic relations, the mesoscale constitutive behavior is able to closely represent the homogenized ply's response of the underlying microstructure.

引用

页码：2893 / 2909

页数：17

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