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1. CA3019409 - METHOD, COMPUTER-READABLE DATA CARRIER, COMPUTER PROGRAM, AND SIMULATOR FOR DETERMINING STRESSES AND SHAPE DEVIATIONS IN AN ADDITIVELY PRODUCED CONSTRUCTION

Office Canada
Application Number 3019409
Application Date
Publication Number 3019409
Publication Date 12.10.2017
Grant Number
Grant Date 01.10.2019
Publication Kind C
IPC
G06F 30/17
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design
10Geometric CAD
17Mechanical parametric or variational design
B33Y 50/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
G06F 30/23
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design
20Design optimisation, verification or simulation
23using finite element methods or finite difference methods
CPC
B22F 2203/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2203Controlling
B22F 2999/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2999Aspects linked to processes or compositions used in powder metallurgy
B33Y 50/02
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
B22F 10/20
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
B22F 10/30
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
30Process control
G06F 30/17
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design [CAD]
10Geometric CAD
17Mechanical parametric or variational design
Applicants SIEMENS AKTIENGESELLSCHAFT
Priority Data 10 2016 205 710.3 06.04.2016 DE
Title
(EN) METHOD, COMPUTER-READABLE DATA CARRIER, COMPUTER PROGRAM, AND SIMULATOR FOR DETERMINING STRESSES AND SHAPE DEVIATIONS IN AN ADDITIVELY PRODUCED CONSTRUCTION
(FR) METHODE, SUPPORT LISIBLE PAR ORDINATEUR, PROGRAMME INFORMATIQUE ET SIMULATEUR PERMETTANT DE DETERMINER DES ECARTS DE TENSION ET DE FORME DANS UNE STRUCTURE DE BATIMENT FABRIQUEE DE MANIERE ADDITIVE
Abstract
(EN)

The invention relates to a method for determining production-related shape
deviations (.epsilon.l,i) and stresses
in a construction (11) produced by means of an additive production method,
which construction is
produced by solidifying construction material in successive layers (12). The
invention further relates to a
use of said method to produce corrected production data (19) and to the
application of said production
data in an additive production system. The invention further relates to a
computer-readable data carrier
and to a computer program for performing said method and to a simulation in
which such a computer
program can run. In the method, superlayers (13) are used in order to reduce
the computational
complexity of the simulation. According to the invention, in order to ensure a
simulation result of
sufficient accuracy with justifiable computational complexity, effective
shrinkage factors (.alpha., or .alpha.l,i) are
determined for the solidified construction material in order to calculate the
effective thermal shrinkage
(.epsilon.l or .epsilon.l,i,) in each superlayer (13).