Strength of Textile Composites – A Voxel Based Continuum Damage Mechanics Approach

Simulation of the mechanical behavior of self-healing composite materials

“…For the configuration of the model, a film thickness of 200 nm (Wu et al , 2008) was selected according to existing literature. Furthermore, two different simulations of the material were performed: First, the inside of the capsule was considered as a void, as suggested by various studies (Rolfes et al , 2007), because the microcapsules have been found to be much softer than the matrix (by at least three orders of magnitude) to have a significant contribution to the elastic constants of self-healing composites. The DCPD healing agent was added to the second simulation as an inclusion, according to the existing literature and the micromechanical model of Eshelby-Mura (equivalent inclusion method), where ellipsoidal inclusions were the main focus of the study (Meshing, 2022). The properties of DCPD found through MatWeb are listed on Table 1.…”

“…Furthermore, they have been successfully used as meshes for composite fabrics in a significant part of the existing literature (Koumpias and Tserpes, 2013; Rolfes et al , 2007; Meshing, 2022).…”

“…For more complex geometries, the conforming/tetra method presents many distorted elements, which negatively affect both the performance and the results of the finite element method (Rolfes et al , 2007). In contrast, in voxels, there is no deformation of the shape due to repeated refinement (mesh refinement) (Meshing, 2022).…”

“…The voxels, as a means of creating the mesh, were selected based on the following criteria: They create a more robust mesh of finite elements and are undeniably faster (Digimat User's Manual, 2010). Furthermore, they have been successfully used as meshes for composite fabrics in a significant part of the existing literature (Koumpias and Tserpes, 2013;Rolfes et al, 2007;Meshing, 2022).…”

Exploiting the structural reserve of textile composite structures by progressive failure analysis using a new orthotropic failure criterion

“…Textile composites offer several advantages compared to unidirectional (UD) composites, such as lower production costs, better drapability, higher delamination and impact strength, see [1]. However, their mechanical inplane properties, stiffness as well as strength, are lower than those of UD-composites.…”