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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Computational Methods for Uncertainty Quantification, Model Validation, and Stochastic Predictions
Presentation Title Computational Simulation and Physical Validation of Welded Aluminum Structures
Author(s) Charles R. Fisher, Matthew F Sinfield, Gary Margelowsky, Yared Amanuel, Jazalyn Dukes, Ken Nahshon
On-Site Speaker (Planned) Charles R. Fisher
Abstract Scope The present study is part of an integrated computational materials engineering (ICME) thrust to expand the use of computational simulations within the design of aluminum structures for the US Navy. Current practice for finite element computational simulations does not integrate material processing into the structural design or failure-mode prediction calculations. Thus, the influence of residual stress and distortion induced by the fabrication process are not included in the simulation, yielding uncertainty in the computational models. To address this, computational modeling of several aluminum weldments of increasing complexity, while simultaneously fabricating matching physical structures, was undertaken. Photogrammetry, x-ray diffraction, and the ring-core method validated the residual stress and distortion predictions. Results indicated a high correlation between the physical weld trials and numerical simulations. The project goal is full integration across multiple computational software programs to improve computational accuracy even further.
Proceedings Inclusion? Planned: A print-only volume


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