Paper Info
Title
Investigations on residual stresses and deformations in selective laser melting
Abstract
For establishing Selective Laser Melting (SLM) in production technology, an extensive knowledge about the transient physical effects during the manufacturing process is mandatory. In this regard, a high process stability for various alloys, e.g. tool steel 1.2709 (X3NiCoMoTi 18-9-5), is realisable, if approaches for the virtual qualification of adequate process parameters by means of a numerical simulation based on the finite element analysis (FEA) are developed. Furthermore, specific methods to evaluate and quantify the resulting residual stresses and deformations due to the temperature gradient mechanism (TGM) are required. Hence, the presented work contains particular approaches using the FEA for the simulation of transient physical effects within the additive layer manufacturing (ALM) process. The investigations focus on coupled thermo-mechanical models incorporating specific boundary conditions and temperature dependant material properties to identify the heat impact on residual stresses and deformations. In order to evaluate the structural effects and simultaneously validate the simulation, analysis on residual stresses based on the neutron diffractometry as well as considerations concerning part deformations are presented.
Year
DOI
Venue
2010
10.1007/s11740-009-0192-y
Production Engineering
Keywords
Field
DocType
selective laser melting slm � residual stressesfinite element analysis fea,selective laser melting,numerical simulation,temperature gradient,boundary condition,residual stress,material properties
Boundary value problem,Selective laser melting,Engineering drawing,Computer simulation,Mechanical engineering,Tool steel,Finite element method,Residual stress,Metallurgy,Engineering,Temperature gradient,Material properties
Journal
Volume
Issue
ISSN
4
1
1863-7353
Citations 
PageRank 
References 
9
1.87
0
Authors
2
Name
Order
Citations
PageRank
Michael F. Zaeh110920.34
Gregor Branner291.87