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Title: Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion

Abstract

Friction stir extrusion (FSE) is a novel solid-phase processing technique that consolidates and extrudes metal powders, flakes, chips, or billets into high-performance parts by plastic deformation, which has the potential to save substantial processing time and energy. Currently, most studies on FSE are experimental and only a few numerical models have been developed to explain and predict the complex physics of the process. In this work, a meshfree simulation framework based on smoothed particle hydrodynamics (SPH) was developed for FSE. Unlike traditional grid-based methods, SPH is a Lagrangian particle-based method that can handle severe material deformations, capture moving interfaces and surfaces, and monitor the field variable histories explicitly without complicated tracking schemes. These aspects of SPH make it attractive for the FSE process, where in situ evolution of field variables is difficult to observe experimentally. To this end, a 3-D, fully thermomechanically coupled SPH model was developed to simulate the FSE of aluminum wires. The developed model was thoroughly validated by comparing the numerically predicted material flow, strain, temperature history, and extrusion force with experimental results for a certain set of process parameters. The validated SPH model can serve as an effective tool to predict and better understand the extrememore » thermomechanical conditions during the FSE process.« less

Authors:
ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1828490
Alternate Identifier(s):
OSTI ID: 1872975; OSTI ID: 1872981
Report Number(s):
PNNL-SA-159353
Journal ID: ISSN 2196-4378; PII: 445
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Computational Particle Mechanics
Additional Journal Information:
Journal Name: Computational Particle Mechanics Journal Volume: 9 Journal Issue: 4; Journal ID: ISSN 2196-4378
Publisher:
Springer Science + Business Media
Country of Publication:
Switzerland
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS; Material flow; Thermomechanical analysis; Lagrangian particle-based method; Large deformation; Smoothed particle hydrodynamics; Material flow, Thermomechanical analysis, Lagrangian particle-based method, Large deformation, smoothed particle hydrodynamics, ShAPE

Citation Formats

Li, Lei, Gupta, Varun, Li, Xiao, Reynolds, Anthony P., Grant, Glenn, and Soulami, Ayoub. Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion. Switzerland: N. p., 2021. Web. doi:10.1007/s40571-021-00445-7.
Li, Lei, Gupta, Varun, Li, Xiao, Reynolds, Anthony P., Grant, Glenn, & Soulami, Ayoub. Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion. Switzerland. https://doi.org/10.1007/s40571-021-00445-7
Li, Lei, Gupta, Varun, Li, Xiao, Reynolds, Anthony P., Grant, Glenn, and Soulami, Ayoub. Mon . "Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion". Switzerland. https://doi.org/10.1007/s40571-021-00445-7.
@article{osti_1828490,
title = {Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion},
author = {Li, Lei and Gupta, Varun and Li, Xiao and Reynolds, Anthony P. and Grant, Glenn and Soulami, Ayoub},
abstractNote = {Friction stir extrusion (FSE) is a novel solid-phase processing technique that consolidates and extrudes metal powders, flakes, chips, or billets into high-performance parts by plastic deformation, which has the potential to save substantial processing time and energy. Currently, most studies on FSE are experimental and only a few numerical models have been developed to explain and predict the complex physics of the process. In this work, a meshfree simulation framework based on smoothed particle hydrodynamics (SPH) was developed for FSE. Unlike traditional grid-based methods, SPH is a Lagrangian particle-based method that can handle severe material deformations, capture moving interfaces and surfaces, and monitor the field variable histories explicitly without complicated tracking schemes. These aspects of SPH make it attractive for the FSE process, where in situ evolution of field variables is difficult to observe experimentally. To this end, a 3-D, fully thermomechanically coupled SPH model was developed to simulate the FSE of aluminum wires. The developed model was thoroughly validated by comparing the numerically predicted material flow, strain, temperature history, and extrusion force with experimental results for a certain set of process parameters. The validated SPH model can serve as an effective tool to predict and better understand the extreme thermomechanical conditions during the FSE process.},
doi = {10.1007/s40571-021-00445-7},
journal = {Computational Particle Mechanics},
number = 4,
volume = 9,
place = {Switzerland},
year = {2021},
month = {11}
}

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