Progressive failure analysis of carbon-fiber reinforced polymer (CFRP) laminates using combined material nonlinear elasticity and continuum damage mechanics based on treatment of coupon test

Abstract

In this paper, predictions of the tensile strength of carbon-fiber reinforced polymer (CFRP) laminate composites are attempted using an improved continuum damage mechanics model with emphasis on the material nonlinearity of the fiber, shear stiffness reductions, the damage contribution of matrix cracks in adjacent layers, and the statistical distribution of the fiber strength due to defects. The Weibull parameter to establish a continuum damage mechanics model was extended to five parameters to satisfy multiscale compatibility and interlamina effects. These five Weibull parameters, which serve as coefficients of a damage evolution function, were investigated by using a statistical model of progressive tensile fiber failure in a composite laminate. The Newton-Raphson method was utilized to formulate a damage-estimation method via a progressive failure analysis procedure. A continuum damage analysis based on the Matzenmiller-Lubliner-Taylor model was revised to add the statistical characteristics of the material strength. The proposed continuum damage mechanics method was also used to solve laminate tension problems with various stacking sequences. The verification test articles include 16-and 20-ply IM7/8552, AS4/8552, and T700/M015 carbon/epoxy composite laminate un-notched and open-hole tensile specimens. The strength prediction of each laminate specimen is presented.

Bond behavior of carbon fabric reinforced cementitious matrix (FRCM) composites considering matrix impregnation

“…11(b). Such a softening behavior can also be assumed for the fiber reinforced polymer that exhibits the progressive failure [40,41]. As can be seen in Fig.…”

Detailed structural analysis for fiber-reinforced polymer with singularities via FETI domain decomposition

“…Hence, fast and accurate numerical characterization should be established to reduce the costs of the specimens and experiments. 7 On the other hand, the stress distribution adjacent to a fiber crack in a unidirectional (UD) fiber-reinforced polymer has been analyzed by manual and numerical computation. 8,9 Regarding the woven fabric laminate modeling, existing studies have adopted the classical laminate plate theory (CLPT).…”

“…Hence, fast and accurate numerical characterization should be established to reduce the costs of the specimens and experiments. 7…”

“…Maghsoudlou 15 used FEM to investigate the mechanical properties of the composites reinforced with the finite carbon nanotubes. Park 7 utilized the parallel multifrontal solver to handle the enormous number of DOFs in a defected UD carbon-fiber-reinforced polymer. Material nonlinearity and continuum damage mechanics were applied to simulate the progressive failure of the composite.…”

High-temperature constitutive model for three-dimensional needled C/C-SiC composite under tensile loading

“…Continuum damage mechanics provides a tractable framework for modeling the stiffness degradation which has been widely used to describe the nonlinear mechanical behaviors of C/C and C/C-SiC composites. [18][19][20] Some composite materials exhibited significant residual deformations before the collapse. The plasticity theory can be used to characterize the material nonlinearity and residual deformations.…”