Strain-rate-dependent progressive damage modelling of UHMWPE composite laminate subjected to impact loading

Abstract

A comprehensive strain-rate-dependent (SRD) finite element modeling procedure, based on continuum damage mechanics has been developed to predict the behavior of ultra-high molecular weight polyethylene (UHMWPE) fiber composite laminates under impact loading. A user-defined material subroutine implemented into ABAQUS/Explicit is used to define SRD constitutive damage model of UHMWPE composite. The effect of strain rate on the material properties is adapted to the experimental data by introducing a new hyperbolic function and the strain-rate effect factor (SEF) for use in the modeling. The range of [Formula: see text] to [Formula: see text] is considered for strain rate, which includes both high velocity and low velocity impact regimes. A homogenized sub-laminate approach is employed to more accurately capture the out-of-plane failure mechanisms. Cohesive Zone Model (CZM) with the constitutive model based on bilinear traction-separation is implemented to simulate the inter-laminar delamination between the sub-laminates. High velocity ballistic impact as well as low velocity drop-weight impact are simulated, and the results are validated with experimental observations from the literature. Results show that the presented SRD model, offers more accurate prediction of the projectile residual velocity compared to the SRD model using logarithmic function or without considering the strain rate effect. Moreover, detailed views of failure modes such as tension/shear fiber and matrix shear in layers, and the delamination patterns are obtained and investigated.

Statistical Distributions for Damage Modelling: A Retrospect

“…A new modified fatigue damage model based on linear damage rule has been proposed. The damage model explaining the stress rate-dependent progressiveness of ultra high molecular weight polyethylene fiber composite laminates under impact loading is described in Mansoori and Zakeri (2022).…”

Numerical investigation on the role of out-of-plane fiber direction on impact resistance of composite target

“…Residual velocity as a parameter for convergence is also found to be used in literature. 35,36 The contact interaction between projectile and targets is modeled with penalty formulation with a constant frictional coefficient of 0.3. The meshed 'GFID-AL-CFID-3L' target with initial and boundary conditions is shown in Figure 10.…”

A parametric study on the behavior of FMLs based on UHMWPE composite under high velocity impact loading

“…39 Hence, the elastic modulus and strength of the UHMWPE composite are ascending at low strain rates and constant at high strain rates. 39 Using available experimental data from, 39 Mansoori and Zakeri 41 introduced a hyperbolic function to properly model the effect of strain rate on the properties of UHMWPE composite as follows 41 SEF ¼ ("…”

“…Using available experimental data from, 39 Mansoori and Zakeri 41 introduced a hyperbolic function to properly model the effect of strain rate on the properties of UHMWPE composite as follows 41 where the parameter trueε˙ is the strain rate. A, B , and C are constants obtained using experimental data.…”