Next Article in Journal
Hot Compression Behavior of a Novel High Entropy Alloy
Previous Article in Journal
Contour Maps for Simultaneous Increase in Yield Strength and Elongation of Hot Extruded Aluminum Alloy 6082
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Metals
Volume 12
Issue 3
10.3390/met12030462
metals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products

by
Hang Jing
1,
Peng Ge
1,2,*,
Zhao Zhang
3,
Jun-Qi Chen
1,
Zhong-Ming Liu
2 and
Wei-Wei Liu
4
1
College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450000, China
2
Zhengzhou Research Institute of Mechanical Engineering Co., Ltd., Zhengzhou 450052, China
3
State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China
4
School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Metals 2022, 12(3), 462; https://doi.org/10.3390/met12030462
Submission received: 27 January 2022 / Revised: 19 February 2022 / Accepted: 7 March 2022 / Published: 9 March 2022
(This article belongs to the Topic Additive Manufacturing)
Browse Figures
Review Reports Versions Notes

Abstract

A new method of controlling the residual stress in laser directed energy deposition additive manufacturing (DED AM) products proposed based on constraints used in manufacturing and the substrate design. The simulation results of the residual stress, which were validated with the experimental measured data, showed that weaker constraints on the substrate could greatly decrease the residual stress in the laser DED AM products. In addition, by designing local reduced thickness regions into the substrate, such as long strip holes or support legs, the residual stress in DED AM products could be further decreased. In this study, when long strip holes were designed in the substrate, the tensile residual stress was decreased by 28%. An even smaller amount of residual stress was achieved when the design structure was changed to support legs. The tensile residual stress decreased by more than 30%. The fewer support legs, the smaller the residual stress. The residual stress in DED AM products could be well-controlled by design, while the stiffness can be weakened with fewer constraints.
Keywords: residual stress; thermal distortion; substrate structure; directed energy deposition residual stress; thermal distortion; substrate structure; directed energy deposition
Graphical Abstract

Share and Cite

MDPI and ACS Style

Jing, H.; Ge, P.; Zhang, Z.; Chen, J.-Q.; Liu, Z.-M.; Liu, W.-W. Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products. Metals 2022, 12, 462. https://doi.org/10.3390/met12030462

AMA Style

Jing H, Ge P, Zhang Z, Chen J-Q, Liu Z-M, Liu W-W. Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products. Metals. 2022; 12(3):462. https://doi.org/10.3390/met12030462

Chicago/Turabian Style

Jing, Hang, Peng Ge, Zhao Zhang, Jun-Qi Chen, Zhong-Ming Liu, and Wei-Wei Liu. 2022. "Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products" Metals 12, no. 3: 462. https://doi.org/10.3390/met12030462

APA Style

Jing, H., Ge, P., Zhang, Z., Chen, J.-Q., Liu, Z.-M., & Liu, W.-W. (2022). Numerical Studies of the Effects of the Substrate Structure on the Residual Stress in Laser Directed Energy Additive Manufacturing of Thin-Walled Products. Metals, 12(3), 462. https://doi.org/10.3390/met12030462

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop