A viscoplastic constitutive model for polymeric materials

E Ghorbel - International Journal of Plasticity, 2008 - Elsevier
Classical models based on the thermodynamics of irreversible process with internal
variables dedicated to the inelastic analysis of metallic structures are modified and then …

Molecular dynamics simulation of deformation behavior in amorphous polymer: nucleation of chain entanglements and network structure under uniaxial tension

K Yashiro, T Ito, Y Tomita - International journal of mechanical sciences, 2003 - Elsevier
In order to clarify the mechanical behavior of molecular chains in amorphous polymers, a
molecular dynamics simulation is conducted on a nanoscopic specimen of amorphous …

Micro-, meso-to macroscopic modeling of deformation behavior of semi-crystalline polymer

M Uchida, N Tada - International Journal of Plasticity, 2013 - Elsevier
To represent the elasto-viscoplastic deformation behavior of semi-crystalline polymer (SCP),
which has a complicated hierarchical structure, a micro-, meso-to macroscopic …

Frequency-and strain-amplitude-dependent dynamical mechanical properties and hysteresis loss of CB-filled vulcanized natural rubber

W Luo, X Hu, C Wang, Q Li - International Journal of Mechanical Sciences, 2010 - Elsevier
The dynamic mechanical behavior of carbon-black-filled vulcanized natural rubber is
experimentally investigated by stretching the rubber strips with various strain amplitudes at …

Computational evaluation of strain-rate-dependent deformation behavior of rubber and carbon-black-filled rubber under monotonic and cyclic straining

Y Tomita, K Azuma, M Naito - International Journal of Mechanical Sciences, 2008 - Elsevier
The molecular chain network model for elastic deformation behavior and the reptation theory
for viscoelastic deformation behavior are used to derive a constitutive equation for rubber …

Constitutive modelling of deformation behavior of glassy polymers and applications

Y Tomita - International Journal of Mechanical Sciences, 2000 - Elsevier
The purpose of the present article is to provide a perspective of constitutive equations for
glassy polymers developed using the molecular chain network theory. The results of …

Numerical evaluation of micro-to macroscopic mechanical behavior of carbon-black-filled rubber

Y Tomita, W Lu, M Naito, Y Furutani - International Journal of Mechanical …, 2006 - Elsevier
We investigate the characteristic deformation behavior of rubber with carbon black (CB)
filler. The deformation behaviors of a plane strain rubber unit cell containing CB fillers under …

A three-dimensional network model for rubber elasticity: The effect of local entanglements constraints

H Bechir, L Chevalier, M Idjeri - International journal of engineering …, 2010 - Elsevier
We present a micro-mechanical model based on the network theory for the description of the
elastic response of rubber-like materials at large strains. The material microstructure is …

Computational characterization of micro-to mesoscopic deformation behavior of semicrystalline polymers

Y Tomita, M Uchida - International Journal of Mechanical Sciences, 2005 - Elsevier
In the present study, we clarify the micro-to mesoscopic deformation behavior of
semicrystalline polymers by the finite element homogenization method. The crystalline …

Molecular chain plasticity model similar to crystal plasticity theory based on change in local free volume and FE simulation of glassy polymer

H Nada, H Hara, Y Tadano, K Shizawa - International Journal of …, 2015 - Elsevier
In this paper, the new concept of a “molecular chain slip system” is analogically proposed on
the basis of crystal plasticity theory for metals, and a molecular chain plasticity model that …