Progressive damage simulation of triaxially braided composite using a 3D meso-scale finite element model

A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites

“…In this model, the imperfections of microstructure such as cracks and voids, the cross-section distortion and mis-alignment of the yarns were introduced by using X-ray tomography, and the yarn/matrix interfaces were modeled as frictional cohesive surfaces. Similar studies dealing with the interface response of 2D braided composites based on the unit-cell model can be found in references [22][23][24].…”

Comparison of periodic mesh and free mesh on the mechanical properties prediction of 3D braided composites

“…After reaching the maximum stress, the computed curves decrease rapidly or gradually according to the loading cases and then the materials loss the carrying capacity. The extended unloading observed in the computed stress-strain curves is considered as a numerical artifact because the experimental specimens most likely have a more brittle fiber failure, whereas the computed curves have a more gradual unloading to promote the numerical stability [15]. The comparison results of predicted strength parameters and failure strains are summarized in Table 3.…”

“…Therefore, besides the study on the stiffness properties [8][9][10][11], the strength and damage properties [12][13][14][15] of textile composites have been investigated by using meso-scale FEM.…”

“…The interested reader can refer to [1][2][3] for further details on multi-scale techniques. So far, theoretical analysis [4][5][6][7] and finite element method [8][9][10][11][12][13][14][15] have been widely employed.…”

Strength prediction for bi-axial braided composites by a multi-scale modelling approach

“…It is clear that either classical failure criteria or newly developed mechanical theory were incorporated into multi-scale schemes for strength prediction for braided composites. However, reliability and accuracy of such schemes are still debatable [23][24][25]. The damage evolution law of Ladeveze is attractive for UD composites because of its simplicity, but it needs modification when applying to braided composites.…”