Finite element modeling of the elastic-viscoplastic behavior of PC/ABS 60:40 blend under uniaxial compression

Resumo

Nowadays the use of polymers presents itself as a viable alternative to replace parts and components
that once were composed only of metallic and/or ceramic materials. The advancement of material engineering
has enabled the creation of polymeric compounds with high resistance, but with a low density, which can be an
advantage when compared to a wide range of various other materials. Along with the advances in obtaining new

polymers, there was also an evolution of numerical models that describe the mechanical behavior of these mate-
rials. The numerical formulations previously used for metallic materials have failed to represent them effectively.

Polymeric materials are highly dependent on several factors, among them the strain rate, working temperature and
manufacturing process are configured as those of greatest relevance in the influence of the mechanical properties.

Therefore, it is extremely important to use constitutive equations that consider the aforementioned nonlinear ef-
fects. The main objective of the present work is to model the mechanical behavior of the uniaxial compression test

of PC/ABS 60:40 blends. For this purpose, the numerical models used to describe the elastic-viscoplastic behavior
of the material are based on the works presented by Arruda, Mulliken and Boyce and were implemented as finite
element explicit formulation within VUMAT subroutines using the commercial software Abaqus.