Strength Analysis of Long Glass Fiber Reinforced Composite Injection Molding Components

Abstract

Based on the generalized Newtonian fluid constitutive equation, using ARD-RSC fiber orientation model, numerical simulation was used to predict fiber orientation distribution of the long-glass fiber reinforced composite injection molding components by considering the interaction between fibers. The fiber homogenized RVE model of long glass fiber reinforced composites was established through the composite material micromechanics Eshelby inclusion theory and Mean Field homogenization method. By using composite meso-scale modeling, discrete RVE model field, injection molding and structural finite element analysis techniques, the strength of long glass fiber reinforced composites analytical method was proposed. The strength analysis of the thrust-rod injection molded part shows that the simulated dangerous position is in good agreement with the actual damage location. On the basis, the structure of thrust rod is improved, the results show that the maximum principal stress of the rod is reduced by 57.18% under the tensile load and 71.25% under the compressive load.

Keywords

• long glass fiber
• injection molding component
• homogenization
• anisotropy
• fiber orientation distribution
• structure improvement