Computational Modeling of PM-HIP Capsule Filling and Consolidation by DEM-FEA Coupling
S. Sobhani, M. Albert, D. Gandy, A. Tabei, A. Fan
download PDFAbstract. Power Metallurgy Hot Isostatic Pressing (PM-HIP) is a manufacturing process, capable of producing net shape or near net shape components with complicated geometries from materials that are often difficult to cast and/or deform. However, the post-HIP quality and requirement of any additional process, such as machining, depends on the design and geometric complexity of the capsule. First of a kind geometry often requires several iterations of prototype builds. Considering the cost and long durations of HIP cycles, usage of computer models in order to predict parameters for an optimal capsule design of a PM-HIP process which produces a sound product in the first trial is extremely valuable. In this study, the pre-consolidation capsule filling process is simulated by Discrete Element Method (DEM) to capture the initial relative density. Finite element analysis (FEA) modeling of HIP, which includes a combined constitutive model based on compressive and consolidative mechanical behavior of powder uses the DEM results as input. Accuracy of the simulation tool is confirmed by comparing against a corresponding physical PM capsule fabrication and HIP experiment with pre- and post-HIP 3D scanning. The result shows that consolidation occurs as the model predicts, with negligible deviations on sharp edges.
Keywords
Hot Isostatic Pressing (HIP), Modeling, Discrete Element Method, Finite Element Analysis, Capsule Filling
Published online 12/8/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: S. Sobhani, M. Albert, D. Gandy, A. Tabei, A. Fan, Computational Modeling of PM-HIP Capsule Filling and Consolidation by DEM-FEA Coupling, Materials Research Proceedings, Vol. 38, pp 141-149, 2023
DOI: https://doi.org/10.21741/9781644902837-20
The article was published as article 20 of the book Hot Isostatic Pressing
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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