Real meso-scale model reconstruction and tensile failure prediction of 3D braided PIP-SiCf/SiC composites considering pore defects

•A combination of parametric and statistical methods is proposed for the real meso-scale model reconstruction.•The finite element model of 3D6d braided SiCf/SiC composite considering yarn shape and pore defects is established.•To predict well the material tensile behaviors, the effect of the fiber damage and pore defects is considered.•The simulation values and damage modes are consistent with the experimental ones when the damage factor is 0.8.