Thermo-mechanical analysis of laser additive manufacturing for metals

Hsuan Hao Shih; Chih Kuang Lin

doi:10.4028/www.scientific.net/KEM.825.7

Thermo-mechanical analysis of laser additive manufacturing for metals

Hsuan Hao Shih, Chih Kuang Lin

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.

Original language	English
Title of host publication	Recent Development in Machining, Materials and Mechanical Technologies III
Editors	Huy Bich Nguyen
Publisher	Trans Tech Publications Ltd
Pages	7-12
Number of pages	6
ISBN (Print)	9783035714821
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.825.7
State	Published - 2019
Event	International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2018 - Ho Chi Minh City, Viet Nam Duration: 19 Sep 2018 → 22 Sep 2018

Publication series

Name	Key Engineering Materials
Volume	825 KEM
ISSN (Print)	1013-9826
ISSN (Electronic)	1662-9795

Conference

Conference	International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2018
Country/Territory	Viet Nam
City	Ho Chi Minh City
Period	19/09/18 → 22/09/18

Keywords

Finite element analysis
Laser additive manufacturing
Metal
Residual stress
Temperature gradient

Access to Document

10.4028/www.scientific.net/KEM.825.7

Residual Stress in Laser Melting Process: Analysis and Prevention(2/2)
Lin, C.-K. (PI)
1/08/18 → 31/07/19
Project: Research

Cite this

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title = "Thermo-mechanical analysis of laser additive manufacturing for metals",

abstract = "The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.",

keywords = "Finite element analysis, Laser additive manufacturing, Metal, Residual stress, Temperature gradient",

author = "Shih, {Hsuan Hao} and Lin, {Chih Kuang}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology (Taiwan) under Contract No. MOST 106-2221-E-008-012-MY2.; International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2018 ; Conference date: 19-09-2018 Through 22-09-2018",

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booktitle = "Recent Development in Machining, Materials and Mechanical Technologies III",

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Shih, HH & Lin, CK 2019, Thermo-mechanical analysis of laser additive manufacturing for metals. in HB Nguyen (ed.), Recent Development in Machining, Materials and Mechanical Technologies III. Key Engineering Materials, vol. 825 KEM, Trans Tech Publications Ltd, pp. 7-12, International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2018, Ho Chi Minh City, Viet Nam, 19/09/18. https://doi.org/10.4028/www.scientific.net/KEM.825.7

Thermo-mechanical analysis of laser additive manufacturing for metals. / Shih, Hsuan Hao; Lin, Chih Kuang.
Recent Development in Machining, Materials and Mechanical Technologies III. ed. / Huy Bich Nguyen. Trans Tech Publications Ltd, 2019. p. 7-12 (Key Engineering Materials; Vol. 825 KEM).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Thermo-mechanical analysis of laser additive manufacturing for metals

AU - Shih, Hsuan Hao

AU - Lin, Chih Kuang

N1 - Funding Information: This work was supported by the Ministry of Science and Technology (Taiwan) under Contract No. MOST 106-2221-E-008-012-MY2.

PY - 2019

Y1 - 2019

N2 - The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.

AB - The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.

KW - Finite element analysis

KW - Laser additive manufacturing

KW - Metal

KW - Residual stress

KW - Temperature gradient

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DO - 10.4028/www.scientific.net/KEM.825.7

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SN - 9783035714821

T3 - Key Engineering Materials

SP - 7

EP - 12

BT - Recent Development in Machining, Materials and Mechanical Technologies III

A2 - Nguyen, Huy Bich

PB - Trans Tech Publications Ltd

T2 - International Conference on Machining, Materials and Mechanical Technologies, IC3MT 2018

Y2 - 19 September 2018 through 22 September 2018

ER -

Thermo-mechanical analysis of laser additive manufacturing for metals

Abstract

Publication series

Conference

Keywords

Access to Document

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Projects

Residual Stress in Laser Melting Process: Analysis and Prevention(2/2)

Cite this