Stress Transfer in Two-Hierarchical Non-self-similar Bio-inspired Composites
摘要
The innovations and advancements in composite materials have significantly been backed by the design of biological composites such as spider silk, nacre, bone, antler, and bamboo, owing to their magnificent mechanical properties. Even though the constituents at their basic level are weak, biological composites are characterized by superior mechanical properties like high toughness and strength which makes them unique. Bio-inspired composites, inspired by biological composites, are engineered by mimicking the essential features of the biological composites, which are responsible for their superior mechanical properties. These include geometric and material properties such as the aspect ratio of platelet, Young’s moduli ratio of platelet to the matrix, and the staggering and hierarchical arrangement of platelets. This study deals with the comparison of stress distribution in a multi-scale finite element model of a two hierarchical (2H) non-self-similar bio-inspired composite. The results of non-self similar composite which is a 2H Stairwise staggered composite with Regular staggered composite as platelets (SR) are compared with that of the models without hierarchy.