A micropolar cohesive damage model for delamination of composites

作者：Rahaman Md M; Deepu S P; Roy D^*; Reddy J N

来源：Composite Structures, 2015, 131: 425-432.

DOI：10.1016/j.compstruct.2015.05.026

• Micro-rotations
• Micropolar cohesive law
• Length scales
• Mesh-free methods

A micropolar cohesive damage model for delamination of composites is proposed. The main idea is to embed micropolarity, which brings an additional layer of kinematics through the micro-rotation degrees of freedom within a continuum model to account for the micro-structural effects during delamination. The resulting cohesive model, describing the modified traction separation law, includes micro-rotational jumps in addition to displacement jumps across the interface. The incorporation of micro-rotation requires the model to be supplemented with physically relevant material length scale parameters, whose effects during delamination of modes I and II are brought forth using numerical simulations appropriately supported by experimental evidences.

• 出版日期2015-11-1