Numerical modeling of multilayer composite pipe with glass fiber‐reinforced polypropylene layer

Abstract This study focuses on the numerical modeling of multilayer composite pipes, specifically those incorporating a glass fiber‐reinforced polypropylene layer. The research investigates the mechanical properties of a high modulus polypropylene grade, BA212E, and a composite material, PP‐GF30, which contains 30 wt.% glass fibers. Various hyperelastic material models are evaluated to accurately represent the mechanical behavior of these materials under different loading conditions. It was found that the Yeoh hyperelastic material model combined with nonlinear isotropic hardening plasticity provides the most suitable representation of the behaviors of these materials. This model was validated through numerical simulations of three‐point bending and pipe compression tests, demonstrating good agreement with experimental data. Highlights Glass fiber‐reinforced multilayer composite pipes for improved stiffness. Comparative evaluation of multiple hyperelastic material models. Yeoh model captures the nonlinear behavior of BA212E and PP‐GF30 accurately. Yeoh model with plasticity offers optimal representation of material behavior. Validated via numerical simulations and experimental data correlation.