Numerical Computation of Component Shape Distortion Manufactured by Selective Laser Melting

被引：69

作者：

Papadakis, L. ^{[1
]}

Loizou, A. ^{[1
]}

Risse, J. ^{[2
]}

Schrage, J. ^{[3
]}

机构：

[1] Frederick Res Ctr, Filokyprou 7-9, CY-1036 Nicosia, Cyprus

[2] Fraunhofer Inst Laser Technol ILT, D-52074 Aachen, Germany

[3] Rhein Westfal TH Aachen, Chair Laser Technol LLT, D-52074 Aachen, Germany

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MANUFACTURING OF LIGHTWEIGHT COMPONENTS: MANULIGHT 2014 | 2014年 / 18卷

基金：

欧盟第七框架计划;

关键词：

Thermo-mechanical simulation; shape distortion; additive manufacturing; selective laser melting; KINETICS;

D O I：

10.1016/j.procir.2014.06.113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main aim of this paper is to effectively replicate the process heat effects during Selective Laser Melting (SLM) using a commercial FE package in terms of modeling effort and computation time, in order to achieve reliable residual stress distributions and distortions compared to experimental measurements. Since each build-up layer consists of hundreds of scan vectors, it is impracticable to model and execute a transient thermo-mechanical simulation without appropriate simplifications. By managing to provide reliable numerical results of the final component shape the volume-by-volume (VBV) method will allow performing a parameter sensitivity analysis on the final shape distortion. With the VBV method three layers of materials are being brought into melt simultaneously. The parameters investigated are the overall heat input and the stiffness of the component; both being directly related to the number of layers being deposited. (C) 2014 Elsevier B.V.

引用

页码：90 / 95

页数：6

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