A 3D finite element stochastic framework for the failure of tow-based discontinuous composites
Tow-Based Discontinuous Composites (TBDCs) combine high manufacturability with good mechanical properties. This work presents a novel 3D approach for the numerical modelling of TBDCs. The framework generates 3D orientation tensors by adding a stochastic component to the orientation tensors determini...
Saved in:
Published in | Composites science and technology Vol. 232; p. 109846 |
---|---|
Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
08.02.2023
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Tow-Based Discontinuous Composites (TBDCs) combine high manufacturability with good mechanical properties. This work presents a novel 3D approach for the numerical modelling of TBDCs. The framework generates 3D orientation tensors by adding a stochastic component to the orientation tensors deterministically predicted by a process simulation. The actual TBDCs are thus idealised as Equivalent Laminates (ELs), resulting from these stochastic tensors. A physically based 3D failure criterion is presented for the prediction of failure initiation of the ELs. The consequent stiffness reduction is captured by a ply-discount method. The approach is validated for two TBDCs materials, with two different moulding conditions and different amounts of in-mould flow. The proposed approach accurately predicts the characteristic variability of these materials. As a consequence, the predicted strength was in good agreement with the experimental results of both materials tested.
[Display omitted] |
---|---|
ISSN: | 0266-3538 1879-1050 |
DOI: | 10.1016/j.compscitech.2022.109846 |