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Investigation on the Influence of Surface Topography Reconstruction and Yield Strength of High-strength Aluminum Alloys in Additive Manufacturing
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Ziliang Dong1, Zhengkun Cheng2, Xiaonan Zhang1, Pin Wen1, **
Chinese Journal of Solid Mechanics | 2024, 45(5) : 638 - 651
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Chinese Journal of Solid Mechanics | 2024, 45(5): 638-651
• Research Paper •
Investigation on the Influence of Surface Topography Reconstruction and Yield Strength of High-strength Aluminum Alloys in Additive Manufacturing
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Ziliang Dong1, Zhengkun Cheng2, Xiaonan Zhang1, Pin Wen1, **
Affiliations
  • 1Department of Engineering Structures and Mechanics, School of Science, Wuhan University of Technology, Wuhan, 430070
  • 2School of Undergraduate Education, Shenzhen Polytechnic University, Shenzhen, 518885
Published: 2024-10-25 doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.020
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To investigate the impact of surface topography on the mechanical properties of additive manufacturing materials, in this paper, high-strength aluminum alloy specimens were fabricated by the selective laser melting method. The influences of scanning speed, heat treatment, deposition direction, and surface roughness on tensile mechanical properties were examined. The surface topography measured by an optical microscope was reconstructed based on the Fourier series and MATLAB software, and the analytical solution of the stress concentration coefficient of the surface topography was derived using the Airy stress function. Finite element analysis was conducted using ABAQUS software to validate the analytical results. The probability density function of the stress concentration coefficient was obtained through normal fitting, and a method for evaluating the reliability of the material based on yield strength was proposed. The proposed methodology in this paper is of reference significance for the quantification of surface roughness and its effect on yield strength of other additive manufacturing materials and specimens.

additive manufacturing  /  stress concentration factor  /  reliability analysis  /  surface topography  /  simulation modeling
Ziliang Dong, Zhengkun Cheng, Xiaonan Zhang, Pin Wen. Investigation on the Influence of Surface Topography Reconstruction and Yield Strength of High-strength Aluminum Alloys in Additive Manufacturing[J]. Chinese Journal of Solid Mechanics, 2024 , 45 (5) : 638 -651 . DOI: 10.19636/j.cnki.cjsm42-1250/o3.2024.020
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doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.020
  • Receive Date：2024-05-24
  • Online Date：2026-04-01
  • Published：2024-10-25
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  • Received：2024-05-24
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Affiliations
    1Department of Engineering Structures and Mechanics, School of Science, Wuhan University of Technology, Wuhan, 430070
    2School of Undergraduate Education, Shenzhen Polytechnic University, Shenzhen, 518885
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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