Prediction of residual stress and deformation of build part with variation of hatch spacing in direct metal laser sintering of AlSi10Mg built part: Thermo-mechanical modeling

2021 ◽  
Vol 33 (3) ◽  
pp. 032011
Author(s):  
Seshadev Sahoo
Keyword(s):  
Residual Stress ◽  
Laser Sintering ◽  
Mechanical Modeling ◽  
Direct Metal Laser Sintering ◽  
Stress And Deformation ◽  
Residual Stress And Deformation ◽  
Hatch Spacing

Numerical Simulation for Residual Stress and Deformation of Surface Welding on Membrane Water-Wall

2014 ◽  
Vol 490-491 ◽  
pp. 594-599
Author(s):  
Fan Ling Meng ◽  
Ai Guo Liu
Keyword(s):  
Residual Stress ◽  
Great Influence ◽  
Residual Deformation ◽  
Welding Residual Stress ◽  
Finite Element Software ◽  
Welding Sequence ◽  
Surface Welding ◽  
Stress And Deformation ◽  
Welding Sequences ◽  
Residual Stress And Deformation

Automatic MIG was adopted to weld Inconel 625 alloy on 20 G Membrane Waterwall, which can improve the capacities of high temperature corrosion resistance and wear resistance. To study the influence of Membrane Waterwall surface welding sequences on residual stress and residual deformation, this paper utilized finite element software ABAQUS and segmented moving heat source model to simulate the sequence welding, balanced welding from the middle to sides, balanced welding from sides to the middle, balanced skip welding from middle to sides and balanced skip welding from sides to the middle and studied their residual stresses and deformations. The simulation results indicated that there was a great influence of welding sequences on the residual stress and deformation. The optimal welding sequence was balanced skip welding from middle to sides and balanced skip welding from sides to the middle, which could change the stress distribution, decrease the welding residual stress by 17%, realize the even deformation of the whole welding section and decrease the bending deformation by 50%.

Investigation on the Effect of Process Parameters on Hardness of Components Produced by Direct Metal Laser Sintering (DMLS)

2012 ◽  
Vol 488-489 ◽  
pp. 1414-1418 ◽  
Author(s):  
C.D. Naiju ◽  
K. Annamalai ◽  
P.K. Manoj ◽  
K.M. Ayaz
Keyword(s):  
Process Parameters ◽  
Statistical Design ◽  
Laser Sintering ◽  
Optimum Process ◽  
Direct Metal Laser Sintering ◽  
Significant Extent ◽  
Statistical Design Of Experiments ◽  
Layer Manufacturing ◽  
Manufacturing Technologies ◽  
Hatch Spacing

Direct metal laser sintering (DMLS) is one of the methods in layer manufacturing technologies by which metal powder can be directly used to produce both prototype and production tools. The components manufactured by DMLS should have essential hardness for its application in the industry. This study was carried out to determine the optimum process parameters influencing the hardness of the components produced by DMLS. Sintering speed, hatch spacing, post contouring, infiltration and hatch type are the process parameters taken up for study. Statistical design of experiments using Taguchi’s orthogonal array was employed for this study. The experimental data obtained were analyzed using ANOVA. From the results, it is found that one of the process parameters; scan spacing affects the hardness of the parts produced by this technology to a significant extent.

Sign in / Sign up

Export Citation Format

Share Document