Simplifiedelasto-perfectplasticmodelstressStrainatbreakStressatbreakdeformation11August31,2025TUDelft
August 31, 2025 11 Simplified elasto – perfect plastic model stress Stress at break Strain at break deformation
Conseguencesofelasto-perfectplastic modelMaterialcanbeloadeduntil failure.Atthat point large deformations will develop.Reality isthat even if you load the material tolevelsbelowfailurelevel,significant permanentdeformationwill develop especially duringrepeated loading12August31,2025?TUDelft
August 31, 2025 12 Consequences of elasto – perfect plastic model • Material can be loaded until failure. • At that point large deformations will develop. • Reality is that even if you load the material to levels below failure level, significant permanent deformation will develop especially during repeated loading
Developmentofpermanentdeformationatstresslevelsbelowfailure stressStrainatstressbreakStressatbreakdeformationpermanentelastic13August31,2025NTUDelft
August 31, 2025 13 Development of permanent deformation at stress levels below failure stress stress Stress at break Strain at break deformation P C permanent elastic