An energy-conserving cycle jump and load application technique for high-cycle fatigue simulations under general loading conditions

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragenBegutachtung

Beitragende

Abstract

For high cycle fatigue simulations, cyclic loads are often replaced by constant envelope loads using a cycle jump technique. However, this simplification cannot be used under general loading conditions where the local stress ratios can substantially deviate from global load ratios. The local stress ratios have to be determined for every material point individually by periodically performing a full loadingunloading cycle. Usually, commercial finite element (FE) solvers use time integration methods that are not energy-conserving, so that the simulation of such a loading-unloading cycle produces a numerical energy error. In this contribution, a new cycle jump and load application technique for high cycle fatigue simulations under general loading conditions is presented. It combines the simulation of full load cycles to determine local stress ratios with cycle jumps to save computational costs. The new technique is characterized by its energy-conserving behavior which is reached by a complete unloading of the FE model after each cycle jump and a modified formulation of the element residual vectors. By using userdefined elements, this modified formulation can also be used with commercial FE solvers.

Details

OriginalspracheEnglisch
TitelECCM21 - Proceedings of the 21st European Conference on Composite Materials
Herausgeber (Verlag)European Society for Composite Materials (ESCM)
Seiten713-717
Seitenumfang5
Band3
ISBN (Print)978-2-912985-01-9
PublikationsstatusVeröffentlicht - 2 Juli 2024
Peer-Review-StatusJa

Konferenz

Titel21st European Conference on Composite Materials
KurztitelECCM 21
Veranstaltungsnummer21
Dauer2 - 5 Juli 2024
Webseite
BekanntheitsgradInternationale Veranstaltung
OrtLa Cité Nantes Congress Centre
StadtNantes
LandFrankreich

Externe IDs

ORCID /0000-0003-1370-064X/work/162844926
Mendeley 3bad8b9f-1bb4-31d2-bb88-4fa985624ef2

Schlagworte

Schlagwörter

  • cycle jump technique, fatigue damage modelling, cohesive zone models, woven composites, segmentation, synthetic training data, x-ray computed tomography