Uncertainty Quantification for Mechanical Properties of Polyethylene Based on Fully Atomistic Model

verfasst von
Nam Vu-Bac, X. Zhuang, T. Rabczuk
Abstract

This study is to assess the effect of temperature and strain rate on the mechanical properties of amorphous polyethylene (PE) based on fully atomistic model. A stochastic constitutive model using data obtained from molecular dynamics (MD) simulations for the material is constructed. Subsequently, a global sensitivity analysis approach is then employed to predict the essential parameters of the mechanical model. The sensitivity indices show that the key parameter affecting Young's modulus and yield stress is the temperature followed by the strain rate.

Organisationseinheit(en)
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Externe Organisation(en)
Ton Duc Thang University
Typ
Artikel
Journal
MATERIALS
Band
12
ISSN
1996-1944
Publikationsdatum
01.11.2019
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Werkstoffwissenschaften (insg.)
Elektronische Version(en)
https://doi.org/10.3390/ma12213613 (Zugang: Offen)