TY - JOUR A1 - Wieser, Günter A1 - Qiao, Linan A1 - Eberle, Arno A1 - Völzke, Holger T1 - Thermomechanical Finite-Element Analyses of Bolted Cask Lid Structures KW - Aircraft crash KW - Fire load KW - Simulation KW - Lid-seal system KW - Storage cask KW - Metallic seal KW - Leakage rate PY - 2004 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 15 IS - 3-4 SP - 223 EP - 230 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-14440 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wieser, Günter A1 - Qiao, Linan A1 - Völzke, Holger A1 - Wolff, Dietmar A1 - Droste, Bernhard T1 - Safety analysis of casks under extreme impact conditions KW - Aircraft crash KW - Impact load KW - Simulation KW - Lid-seal system KW - Storage cask KW - Metallic seal KW - Leakage rate PY - 2004 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 15 IS - 2 SP - 141 EP - 147 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-14441 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Qiao, Linan A1 - Weber, Mike A1 - Kovacs, Oliver A1 - Droste, Bernhard T1 - Sicherheitstechnische Analyse von Transport- und Lagerbehältern aus Gusseisen mit erhöhten metallischen Reststoffanteilen mittels Fallversuchen T2 - KONTEC 2007 CY - Dresden, Deutschland DA - 2007-03-21 KW - Behälterdesign KW - Bruchmechanik KW - Duktiles Gusseisen KW - Dynamische Belastungsbedingungen KW - Sicherheitstechnische Bewertung PY - 2007 SP - 869 EP - 875 PB - Gesellschaft für technische Kommunikation mbH / Kerntechnische Gesellschaft CY - Dresden AN - OPUS4-14712 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan T1 - Dynamische Analyse eines mit Stoßdämpfern ausgerüsteten Gefahrgutbehälters bei Fallversuchen mit verschiedenen Aufprallpositionen T2 - ABAQUS-Benutzerkonferenz 2007 CY - Baden-Baden, Germany DA - 2007-09-17 PY - 2007 AN - OPUS4-15726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan T1 - Numerical Investigation of a Complex Drop Test Scenario T2 - Radioactive Materials Transport and Storage Conference 2012 CY - London, England DA - 2012-05-23 PY - 2012 AN - OPUS4-25973 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan T1 - Validation of Numerical Simulation Models for Transport and Storage Casks using Drop Test Results T2 - The Eleventh International Conference on Comutational Structures Technology CY - Dubrovnik, Croatia DA - 2012-09-04 PY - 2012 AN - OPUS4-26813 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan A1 - Kasparek, Eva Maria A1 - Völzke, Holger A1 - Zencker, Uwe A1 - Scheidemann, Robert T1 - Development of a finite element model for damping concrete under severe impact loads N2 - Finite element analysis (FEA) has been carried out for investigation of damping concrete under different impact loading conditions with a built-in material model and damage criteria available in FEA code ABAQUS. At first, all parameters for the selected material model had been derived from compression Tests of cubic specimens. After that, a validation was carried out with different static and dynamic penetration tests. Finally, a 5 meter real drop test with a 23 Mg cylindrical cask could successfully be simulated. T2 - PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials CY - San Francisco, CA, USA DA - 18.08.2013 PY - 2013 SP - Session D, Paper 127, 1 EP - 10 PB - Omnipress AN - OPUS4-29110 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Qiao, Linan A1 - Droste, Bernhard T1 - Assessment of dynamically loaded surface cracks in cubic containers T2 - 13th International Conference on Packaging and Transportation of Radioactive Materials ; PATRAM 2001 CY - Chicago, IL, USA DA - 2001-09-03 PY - 2001 IS - CD-ROM PB - PATRAM CY - Chicago, Ill. AN - OPUS4-1889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Marotzke, Christian A1 - Qiao, Linan ED - Bader, M. T1 - Determination of the interfacial fracture toughness using micromechanical tests T2 - 7th European Conference on Composite Materials (ECCM-7) CY - London, England, UK DA - 1996-05-14 KW - Micromechanik KW - Grenzfläche KW - Bruch KW - Finite-Elemente-Methode PY - 1996 SN - 1-85573-304-8 VL - 2 SP - C609-1-C609-6 PB - Woodhead Publishing Ltd CY - Cambridge AN - OPUS4-655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Komann, Steffen A1 - Neumann, Martin A1 - Ballheimer, Viktor A1 - Wille, Frank A1 - Weber, Mike A1 - Qiao, Linan A1 - Droste, Bernhard T1 - Mechanical assessment within type B packages approval: application of static and dynamic calculation approaches N2 - This paper demonstrates exemplarily how numerical and experimental approaches can be combined reasonably in mechanical assessment of package integrity according to the IAEA regulations. The paper also concentrates on the question about how static mechanical approaches can be applied, and what their problems are in relation to dynamic calculation approaches. Under defined impact tests, which represent accident transport conditions, the package has to withstand impact loading, e.g. resulting from a 9 m free drop onto an unyielding target in sequence with a 1 m puncture drop test. Owing to the local character of the interaction between the puncture bar and the cask body, it is possible to develop a dynamic numerical model for the 1 m puncture drop which allows an appropriate simulation of the interaction area. Results from existing experimental drop tests with prototype or small scale cask models can be used for verification and validation of applied analysis codes and models. The link between analysis and experimental drop testing is described exemplarily by considering a regulatory 1 m puncture bar drop test onto the cask body of a recently approved German high level waste transport package. For the 9 m drop test of the package, it is difficult to develop a dynamic numerical model of the package due to the complexity of the interaction between cask body, impact limiters and unyielding target. Dynamic calculations require an extensive verification with experimental results. The simulation of a 9 m drop of a package with impact limiters is thereby often more complex than the simulation of a 1 m puncture drop onto the cask body. A different approximation method can be applied for the consideration of dynamic effects on the impact loading of the package. In a first step, maximum impact force and rigid body deceleration of the cask body during the impact process can be calculated with simplified numerical tools. This rigid body deceleration can subsequently be applied on a verified static numerical model. Dynamic effects, which cannot be covered by the static numerical analysis, have therefore to be considered by using an additional dynamic factor. The paper describes this approach exemplarily for a 9 m horizontal drop of a typical spent fuel cask design. KW - Package assessment KW - Package KW - Packaging KW - Structural analysis PY - 2011 DO - https://doi.org/10.1179/1746510911Y.0000000012 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 22 IS - 4 SP - 179 EP - 183 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-26448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -