Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process

Rizwan Ullah; Junhe Lian; Jiaojiao Wu; Esko Niemi

doi:10.4028/p-16auf3

Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process

Rizwan Ullah, Junhe Lian, Jiaojiao Wu, Esko Niemi

Konetekniikan laitos

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa › Conference contribution › Scientific › vertaisarvioitu

14 Lataukset (Pure)

Abstrakti

Simulating powder bed fusion processes (PBF) can reveal temperature evolution in transient mode. Accurate temperature prediction using finite element (FE) method demands both mesh and time increments to be very small; thus, requiring a high computational cost. To avoid this, in part-scale simulation, coarse meshes representing multiple powder layers added at once, are usually used which results in fast solving of FE models. Powder layers and time increments are lumped in such a configuration, which results in a deviation of the temperature history. This research proposes a methodology to predict the nodal temperature (NT) due to the combined effect of space and time lumping for part-scale FE thermal simulation for PBF processes. It shows its effects in predicting both the local temperature history and the average far-field temperature.

Alkuperäiskieli	Englanti
Otsikko	Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022
Toimittajat	Gabriela Vincze, Frédéric Barlat
Kustantaja	TRANS TECH PUBLICATIONS
Sivut	341-348
Sivumäärä	8
ISBN (painettu)	9783035717594
DOI - pysyväislinkit	https://doi.org/10.4028/p-16auf3
Tila	Julkaistu - 2022
OKM-julkaisutyyppi	A4 Artikkeli konferenssijulkaisuussa
Tapahtuma	International ESAFORM Conference on Material Forming - Braga, Portugali Kesto: 27 huhtik. 2022 → 29 huhtik. 2022 Konferenssinumero: 25

Julkaisusarja

Nimi	Key Engineering Materials
Vuosikerta	926
ISSN (painettu)	1013-9826
ISSN (elektroninen)	1662-9795

Conference

Conference	International ESAFORM Conference on Material Forming
Lyhennettä	ESAFORM
Maa/Alue	Portugali
Kaupunki	Braga
Ajanjakso	27/04/2022 → 29/04/2022

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10.4028/p-16auf3Lisenssi: CC BY

KEM.926.341Final published version, 908 KBLisenssi: CC BY

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Ullah, R., Lian, J., Wu, J., & Niemi, E. (2022). Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process. teoksessa G. Vincze, & F. Barlat (Toimittajat), Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022 (Sivut 341-348). (Key Engineering Materials; Vuosikerta 926). TRANS TECH PUBLICATIONS. https://doi.org/10.4028/p-16auf3

Ullah, Rizwan ; Lian, Junhe ; Wu, Jiaojiao et al. / Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process. Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022. Toimittaja / Gabriela Vincze ; Frédéric Barlat. TRANS TECH PUBLICATIONS, 2022. Sivut 341-348 (Key Engineering Materials).

@inproceedings{2fde922005934b8fbdbd4c053f6e25bf,

title = "Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process",

abstract = "Simulating powder bed fusion processes (PBF) can reveal temperature evolution in transient mode. Accurate temperature prediction using finite element (FE) method demands both mesh and time increments to be very small; thus, requiring a high computational cost. To avoid this, in part-scale simulation, coarse meshes representing multiple powder layers added at once, are usually used which results in fast solving of FE models. Powder layers and time increments are lumped in such a configuration, which results in a deviation of the temperature history. This research proposes a methodology to predict the nodal temperature (NT) due to the combined effect of space and time lumping for part-scale FE thermal simulation for PBF processes. It shows its effects in predicting both the local temperature history and the average far-field temperature.",

keywords = "FE simulation, mesh and time lumping, Powder bed fusion, residual stress prediction, thermal history",

author = "Rizwan Ullah and Junhe Lian and Jiaojiao Wu and Esko Niemi",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by Trans Tech Publications Ltd, Switzerland.; International ESAFORM Conference on Material Forming, ESAFORM ; Conference date: 27-04-2022 Through 29-04-2022",

year = "2022",

doi = "10.4028/p-16auf3",

language = "English",

isbn = "9783035717594",

series = "Key Engineering Materials",

publisher = "TRANS TECH PUBLICATIONS",

pages = "341--348",

editor = "Gabriela Vincze and Fr{\'e}d{\'e}ric Barlat",

booktitle = "Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022",

address = "Switzerland",

}

Ullah, R , Lian, J , Wu, J & Niemi, E 2022, Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process. julkaisussa G Vincze & F Barlat (toim), Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022. Key Engineering Materials, Vuosikerta 926, TRANS TECH PUBLICATIONS, Sivut 341-348, International ESAFORM Conference on Material Forming, Braga, Portugali, 27/04/2022. https://doi.org/10.4028/p-16auf3

Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process. / Ullah, Rizwan ; Lian, Junhe ; Wu, Jiaojiao et al.

Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022. toim. / Gabriela Vincze; Frédéric Barlat. TRANS TECH PUBLICATIONS, 2022. s. 341-348 (Key Engineering Materials; Vuosikerta 926).

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa › Conference contribution › Scientific › vertaisarvioitu

TY - GEN

T1 - Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process

AU - Ullah, Rizwan

AU - Lian, Junhe

AU - Wu, Jiaojiao

AU - Niemi, Esko

N1 - Conference code: 25

PY - 2022

Y1 - 2022

N2 - Simulating powder bed fusion processes (PBF) can reveal temperature evolution in transient mode. Accurate temperature prediction using finite element (FE) method demands both mesh and time increments to be very small; thus, requiring a high computational cost. To avoid this, in part-scale simulation, coarse meshes representing multiple powder layers added at once, are usually used which results in fast solving of FE models. Powder layers and time increments are lumped in such a configuration, which results in a deviation of the temperature history. This research proposes a methodology to predict the nodal temperature (NT) due to the combined effect of space and time lumping for part-scale FE thermal simulation for PBF processes. It shows its effects in predicting both the local temperature history and the average far-field temperature.

AB - Simulating powder bed fusion processes (PBF) can reveal temperature evolution in transient mode. Accurate temperature prediction using finite element (FE) method demands both mesh and time increments to be very small; thus, requiring a high computational cost. To avoid this, in part-scale simulation, coarse meshes representing multiple powder layers added at once, are usually used which results in fast solving of FE models. Powder layers and time increments are lumped in such a configuration, which results in a deviation of the temperature history. This research proposes a methodology to predict the nodal temperature (NT) due to the combined effect of space and time lumping for part-scale FE thermal simulation for PBF processes. It shows its effects in predicting both the local temperature history and the average far-field temperature.

KW - FE simulation

KW - mesh and time lumping

KW - Powder bed fusion

KW - residual stress prediction

KW - thermal history

UR - http://www.scopus.com/inward/record.url?scp=85140452123&partnerID=8YFLogxK

U2 - 10.4028/p-16auf3

DO - 10.4028/p-16auf3

M3 - Conference contribution

AN - SCOPUS:85140452123

SN - 9783035717594

T3 - Key Engineering Materials

SP - 341

EP - 348

BT - Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022

A2 - Vincze, Gabriela

A2 - Barlat, Frédéric

PB - TRANS TECH PUBLICATIONS

T2 - International ESAFORM Conference on Material Forming

Y2 - 27 April 2022 through 29 April 2022

ER -

Ullah R , Lian J , Wu J , Niemi E. Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process. julkaisussa Vincze G, Barlat F, toimittajat, Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022. TRANS TECH PUBLICATIONS. 2022. s. 341-348. (Key Engineering Materials). doi: 10.4028/p-16auf3

Effect of Finite Element Mesh Size and Time-Increment on Predicting Part-Scale Temperature for Powder Bed Fusion Process

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