Modeling thermomechanical damage mechanisms of concrete
- Compressive strength of concrete is highly temperature dependent. Using experimentally obtained relations as input for numerical simulations is problematic. A more accurate and reliable material model results from taking the coupling between thermal and mechanical behaviour into account. In this contribution, a coupled finite element solution on mesoscale geomtries is shown to exhibit a loss in compressive strength at higher temperatures. This is purely a result of the incompatible expansion of mortar matrix and aggregates, with no explicit temperature dependency of the employed constitutive models.
Autor*innen: | Christoph Pohl |
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Koautor*innen: | Jörg F. UngerORCiD |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2017 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau |
Freie Schlagwörter: | Compressive strength of concrete; Finite elements; High temperature; Mesoscale; Thermomechanics |
Veranstaltung: | VII International Conference on Coupled Problems in Science and Engineering |
Veranstaltungsort: | Rhodos, Greece |
Beginndatum der Veranstaltung: | 12.06.2017 |
Enddatum der Veranstaltung: | 14.06.2017 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 21.06.2017 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |