Group Analysis Method of 3D Braided Composites Elastic Properties

Abstract:

The matrix representation of space point group is used in transferring the elastic matrix of the braided yarn based on the symmetries of braided composites representative volume element (RVE) meso-geometrical structure. The off-axis elastic matrixes of the whole braided yarns of the RVE are deduced. With a use of meso-mechanical model based on the mixture rule, the yarn segments off-axis elastic matrixes in the RVE and matrixs one are summed with weight; Equivalent elastic matrix of 3D braided composites was deduced. Equivalent engineering elastic constants are achieved in the end. The model can be applied in 2D braided composites mechanical analysis if its geometry is satisfied to the symmetries corresponding to plain point group.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 364-369
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.364
• Online since: November 2013
• Authors: Wen Suo Ma*, Dong Dong Yin
• Keywords: 3D Braided Composites, Elastic Property, Group Analysis

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