Application of continuum damage mechanics model in terms of fatigue life assessment for low cycle and quasi static loadings

The aim of this study is to test the classical Lemaitre model based on continuum damage mechanics (CDM) approach in the range of low cycle and quasi‐static fatigue life. Study is carried out with the use of results of experimental tests for C45 steel (according to AISI: 1045 steel) carried out under...

Full description

Saved in:
Bibliographic Details
Published in:Materialwissenschaft und Werkstofftechnik 2018-08, Vol.49 (8), p.1026-1039
Main Authors: Skibicki, D., Ligaj, B.
Format: Article
Language:English
Subjects:
1045 steel
C45 steel
C45-Stahl
CDM methods
Continuum damage mechanics
Crack propagation
Creep rupture strength
Damage assessment
Dehnungs-Spannungs-basierte Berechnungsmethode
Fatigue failure
Fatigue life
Fatigue life assessment
fatigue life prediction
Fatigue tests
Kontinuumsmechanik
Lebensdauervorhersage
Lemaitre model
Lemaitre-Modell
Life assessment
Low cycles fatigue
Mathematical models
Medium carbon steels
Model testing
Niederfrequente Ermüdung
Palmgren-Miner method
Palmgren-Miner rule
Palmgren-Miner-Methode
strain-stress based calculation methods
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this study is to test the classical Lemaitre model based on continuum damage mechanics (CDM) approach in the range of low cycle and quasi‐static fatigue life. Study is carried out with the use of results of experimental tests for C45 steel (according to AISI: 1045 steel) carried out under variable‐amplitude loading. Loading programs are of two‐step character and include blocks of cycles of different lengths and R =  ‐1 coefficients. Fatigue lives are calculated according to Lemaitre model from experimentally obtained stress and strain histories recorded during fatigue tests. The results are compared with experimental tests results and with fatigue lives calculated with the use of by traditional fatigue approach based on Palmgren‐Miner damage summation hypothesis. Experimental test of fatigue life calculation results for C45 steel reveals that continuum damage method, using the recorded stresses and strains, predicts fatigue life better as compared to the remaining methods. The study also contains many detailed analyses of experimental results.
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.201700139