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Modeling of cylindrical casks under horizontal drop test conditions

  • Cylindrical casks made of ductile cast iron are used for transport, interim storage and final disposal of radioactive waste in Germany. A basic design criterion is the ability to withstand a horizontal drop without impact Binders onto a foundation representative for the real ground of a storage facility. The increasing use of more cost-effective material compositions requires optimized cask geometries to reduce stresses and strains in the cask structure. For example, a non-uniform wall thickness was introduced to reduce maximum wall bending stresses. As a result, the load characteristics changed from line load to point load at bottom and lid side under horizontal drop fest conditions. Hereby, the position of highest stress inside the structure has shifted significantly. This was the reason for a systematic investigation of effects caused by small design changes or small variations of fest conditions. It led to a better understanding of the positions of high local stresses, their timeCylindrical casks made of ductile cast iron are used for transport, interim storage and final disposal of radioactive waste in Germany. A basic design criterion is the ability to withstand a horizontal drop without impact Binders onto a foundation representative for the real ground of a storage facility. The increasing use of more cost-effective material compositions requires optimized cask geometries to reduce stresses and strains in the cask structure. For example, a non-uniform wall thickness was introduced to reduce maximum wall bending stresses. As a result, the load characteristics changed from line load to point load at bottom and lid side under horizontal drop fest conditions. Hereby, the position of highest stress inside the structure has shifted significantly. This was the reason for a systematic investigation of effects caused by small design changes or small variations of fest conditions. It led to a better understanding of the positions of high local stresses, their time history and maximum value for cylindrical casks under horizontal drop test conditions. Hence, the paper presents the lessons learnt from modeling and simulating such scenarios considering an impact without limiters onto a realistic target.zeige mehrzeige weniger

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Autor*innen:Uwe Zencker, Linan Qiao, Eva Maria Kasparek, Holger Völzke
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):IHLRWM 2013 - 14th International high-level radioactive waste management conference (Proceedings)
Jahr der Erstveröffentlichung:2013
Herausgeber (Institution):American nuclear society (ANS)
Verlag:Omnipress
Erste Seite:1114
Letzte Seite:1119 (Paper # 6862)
Freie Schlagwörter:Concrete foundation; Cylindrical cask; Ductile cast iron; Horizontal drop test; Numerical simulation; Storage facility
Veranstaltung:14th International high-level radioactive waste management conference
Veranstaltungsort:Albuquerque, New Mexico, USA
Beginndatum der Veranstaltung:28.04.2013
Enddatum der Veranstaltung:02.05.2013
ISBN:978-1-62748-644-6
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:27.05.2013
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