Journal ArticleDOI
An elasto-viscoplastic constitutive model for polymers at finite strains
TLDR
In this article, a finite strain elasto-viscoplastic constitutive model is proposed to predict the non-linear behavior of polymeric based materials and a particularly efficient numerical integration algorithm is presented.About:
This article is published in Computers & Structures.The article was published on 2016-04-01. It has received 21 citations till now. The article focuses on the topics: Numerical integration & Rate of convergence.read more
Citations
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Journal ArticleDOI
Determination of the size of the Representative Volume Element (RVE) for the simulation of heterogeneous polymers at finite strains
TL;DR: In this article, a methodology based on statistical analysis and numerical experiments is proposed to determine the size of the representative volume element (RVE) for heterogeneous amorphous polymers subjected to finite deformations.
Journal ArticleDOI
The mechanical behavior of polylactic acid (PLA) films: fabrication, experiments and modelling
TL;DR: In this article, a physically-based constitutive model was used to model the mechanical behavior of thin films of thin polylactic acid (PLA) and the rate dependency of the stress-strain behavior was properly modelled.
Journal ArticleDOI
Modelling of the post yield response of amorphous polymers under different stress states
TL;DR: In this paper, an elasto-viscoplastic constitutive model based on the single mode EGP (Eindhoven Glassy Polymer) model is proposed to describe the deformation behavior of solid polymers subjected to finite deformations under different stress states.
Journal ArticleDOI
On strain rate and temperature dependent mechanical properties and constitutive models for additively manufactured polylactic acid (PLA) materials
TL;DR: In this article , a modified Zener model is developed to predict the stress-strain responses accounting for the combined effects of strain rate and temperature with proper modeling accuracy, and significant strain localization induced by the embrittlement of PLA is identified by the DIC system.
Journal ArticleDOI
Geometrical Scaling Effects in the Mechanical Properties of 3D-Printed Body-Centered Cubic (BCC) Lattice Structures.
TL;DR: In this article, a number of geometrically scaled lattice structures based on the body-centered cubic design were manufactured and tested in order to highlight size effects in their compression properties and failure modes.
References
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Journal ArticleDOI
A Theory of Large Elastic Deformation
TL;DR: In this paper, it was deduced that the general strain energy function, W, has the form W=G4 ∑ i=13(λi−1λi)2+H 4 ∑ t=13 (λi2−1 ε)2 + H 4, where the λi's are the principal stretches, G is the modulus of rigidity, and H is a new elastic constant not found in previous theories.
Journal ArticleDOI
Viscosity, Plasticity, and Diffusion as Examples of Absolute Reaction Rates
TL;DR: The theory of reaction rates yields an equation for absolute viscosity applicable to cases involving activation energies where the usual theory of energy transfer does not apply as mentioned in this paper, which provides an explanation of the law of rectilinear diameters of Cailletet and Mathias.
BookDOI
Non-Linear Finite Element Analysis of Solids and Structures: de Borst/Non-Linear Finite Element Analysis of Solids and Structures
TL;DR: De Borst et al. as mentioned in this paper present a condensed version of the original book with a focus on non-linear finite element technology, including nonlinear solution strategies, computational plasticity, damage mechanics, time-dependent effects, hyperelasticity and large-strain elasto-plasticity.
Book
Computational methods for plasticity : theory and applications
TL;DR: In this article, the authors present a general numerical integration algorithm for elastoplastic constitutive equations, based on the von Mises model, which is used for the integration of the isotropically hardening deformation.