Experimental investigation and numerical modelling of 3D printed polyamide 12 with viscoplasticity and a crack model at different strain rates

This contribution presents an investigation of strain rate dependent behaviour for selective laser sintered polyamide 12. Two different cases are considered: a strain rate change within tensile loading and a relaxation test incorporating a strain rate change after each holding time section. For the...

Full description

Saved in:
Bibliographic Details
Published in:Materials today communications 2020-12, Vol.25, p.101542, Article 101542
Main Authors: Sagradov, Ilja, Schob, Daniela, Roszak, Robert, Maasch, Philipp, Sparr, Holger, Ziegenhorn, Matthias
Format: Article
Language:English
Subjects:
Bodner-Partom model
Chaboche model
Lemaitre
Rate-dependent
SLS-PA12
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This contribution presents an investigation of strain rate dependent behaviour for selective laser sintered polyamide 12. Two different cases are considered: a strain rate change within tensile loading and a relaxation test incorporating a strain rate change after each holding time section. For the simulation of material behaviour the material model of Bodner-Partom and Chaboche were used. The damage behaviour was considered by the Lemaitre crack model. Thereby it was determined which numerical model is more suitable to reproduce the strain rate-dependent behaviour. Tensile and relaxation tests at constant speeds served as the basis for these investigations.
ISSN:2352-4928
2352-4928
DOI:10.1016/j.mtcomm.2020.101542