Viscoelastic material behaviour of PBT-GF30 under thermo-mechanical cyclic loading

被引：6
|
作者：
Pierantoni, M. [2 ]
De Monte, M. [1 ]
Papathanassiou, D. [3 ]
De Rossi, N. [2 ]
Quaresimin, M. [2 ]
机构：
[1] Robert Bosch GmbH, Corp Sect Res & Adv Engn, Adv Prod Technol Plast Engn CR APP2 1, Postbox 1131, D-71301 Waiblingen, Germany
[2] Univ Padua, Dept Management & Engn, I-36100 Padua, Italy
[3] Robert Bosch GmbH, Automot Elect engn Validat Reliabil AE EVR1, D-72762 Reutlingen, Germany
来源：
11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷
关键词：
thermo-mechanical fatigue; viscoelastic behaviour; short fibre reinforced plastics; mechanical properties; structural simulation; TEMPERATURE; COMPOSITES;
D O I：
10.1016/j.proeng.2011.04.354
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with the simulation of the behaviour of a short glass fibre reinforced polybutylene terephthalate (PBT-GF30) under thermo-mechanical cyclic loading. Thermo-mechanical fatigue (TMF) tests, consisting of thermal cycling with a superimposed constant strain, have been carried out in the temperature ranges of -40 degrees C to 120 degrees C and -40 degrees C to 40 degrees C, applying different mean strain values. The main goal of the work is to model the stress trend during TMF cycles and assess the performance of a linear viscoelastic material model. A linear viscoelastic model has been implemented in ABAQUS 6.9-1 by means of Prony series, using the UTRS subroutine to model the time-temperature shift. The stress-time trend during TMF tests is discussed, comparing the simulated versus the experimental stress results. In particular, the maximum and minimum values within each cycle are considered, in order to evaluate the performance of the material model. Linear viscoelastic simulations show good agreement between experimental tests and FE analysis, both for plain and notched specimens. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of ICM11
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页数：6
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