COVER Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti BAB 1 Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti BAB 2 Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti BAB 4 Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti BAB 5 Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti PUSTAKA Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti BAB 3 Khodijah Kholish Rumayshah
PUBLIC Alice Diniarti
This research developed a multiscale numerical modeling of glass fiber
reinforced thermoplastic composite material. The modeling process started
from micro- to meso-scale level. The microscale level was done by modeling
a hexagonal unit cell under 4 loading conditions, i.e. uniaxial tension,
transverse tension, transversal shear, and longitudinal shear, to get a complete
elastic and damage properties of the unit cell in all modes. The thermoplastic
matrix was modeled using Drucker-Prager plasticity and Ductile Damage
model while the fiber-matrix interface was modeled using cohesive element.
The effect of fiber volume fraction variation to the damage modes and the
mechanical properties was also studied. The mesoscale model was built of a
n×n homogenized unit cells. The unit cell properties with different fiber
volume fractions were distributed randomly across the mesoscale model with
the expectation to represent the fiber nonuniformity in the actual composite
material. It was proved that the proposed mesoscale model could predict the
composite transverse tensile strength with error of 1% compared to the
experiment result. The homogenized mesoscale model also had a lower
computational cost compared to another reference model that model the
heterogeneity of fibers and matrix. It was expected that this simplified method
can be used to reduce the number of experiment to estimate the mechanical
properties of heterogeneous material.