.png){kind=icon}
.png){kind=icon}
Return
Two-phase numerical modeling of interfacial dynamics in overmolding of thermoplastic composite inserts with short fiber-reinforced thermoplastics
.png){kind=icon}
PRE
AI
N
H
L
C
S
T
DOI：10.1016/j.compositesb.2026.114044.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Understanding the interfacial interactions between molten short fiber-reinforced thermoplastics and pre-molded continuous fiber composite inserts during overmolding is essential for optimizing adhesion, stress distribution, and the mechanical performance of the final part. This study introduces a novel and streamlined numerical approach to model the formation of this complex interface during the overmolding process. A two-dimensional, two-phase flow model is developed by solving the Stokes equations in both the low-viscosity short fiber polymer suspension and the highly viscous thermoplastic composite phases. This strategy avoids the iterative fluid–structure coupling typically required by traditional fluid–solid interaction (FSI) models. To capture fiber–flow coupling effects within each phase, the model employs a modified constitutive equation that incorporates a fourth-order orientation tensor. This tensor represents the influence of fiber orientation on flow behavior and is computed by directly solving the Fokker–Planck equation using the Streamline-Upwind/Petrov–Galerkin (SUPG) finite element method, allowing dynamic tracking of fiber orientation over time. This study investigates the model’s ability to predict the deformation of composite inserts for different fiber volume fractions and orientations.
Journal
IF:
14.2
Papers:
1.2W
Citations:
8.9W
Organization
Cited Papers