Abstract
A unique quasi-static temperature dependent low strain rate finite element constitutive failure model has been developed at Sandia National Laboratories (Dempsey JF, Antoun B, Wellman G, Romero V, Scherzinger W (2010) Coupled thermal pressurization failure simulations with validation experiments. Presentation at ASME 2010 international mechanical engineering congress & exposition, Vancouver, 12–18 Nov 2010) and is being to be used to predict failure initiation of pressurized components at high temperature. In order to assess the accuracy of this constitutive model, validation experiments of a cylindrical stainless steel pipe, heated and pressurized to failure is performed. This “pipe bomb” is instrumented with thermocouples and a pressure sensor whereby temperatures and pressure are recorded with time until failure occurs. The pressure and thermocouple temperatures are then mapped to a finite element model of this pipe bomb. Mesh refinement and temperature mapping impacts on failure pressure prediction in support of the model validation assessment is discussed.
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References
Antoun B (2009) Sandia National Laboratories C6 L3 milestone report: material characterization and coupled thermal-mechanical experiments for pressurized, high temperature systems, 11 Sept 2009
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Romero V, Dempsey JF, Wellman G, Antoun B (2012) A method for projecting uncertainty from sparse samples of discrete random functions ─ example of multiple stress–strain curves. In: 14th AIAA non-deterministic approaches conference, Honolulu, 23–26 Apr 2012
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Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.
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© 2014 The Society for Experimental Mechanics, Inc.
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Dempsey, J.F., Romero, V.J., Antoun, B.R. (2014). Modeling and Simulation in Validation Assessment of Failure Predictions for High Temperature Pressurized Pipes. In: Antoun, B., et al. Challenges In Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00852-3_19
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DOI: https://doi.org/10.1007/978-3-319-00852-3_19
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