A hierarchical multi-scale analytical approach for predicting the elastic behavior of short fiber reinforced polymers under triaxial and flexural loading conditions

This paper presents a computationally efficient multi-scale analytical framework for predicting the effective elastic response of short fiber reinforced polymers (SFRPs) under triaxial and flexural loading conditions where details microstructure such as core/shell thickness, volume fraction distribution, misalignment length variation are objectively taken into account. To this end, mean-field homogenization finite element approaches compared to calculate SFRPs at microscopic level while orientation averaging approach is used address effects misalignment. The obtained mechanical behavior then linked an enhanced laminate theory predict bending macrostructural considering through thickness. Using second-order technique, numerical validation proposed investigated based on micro- meso-scale analyses. Furthermore, potential strategy demonstrated hybrid composites. Finally, accuracy suggested model thoroughly studied using available experimental tests in literature statistical information about SFRP microstructures presented.