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1. CN109074410 - METHOD, COMPUTER-READABLE DATA CARRIER, COMPUTER PROGRAM, AND SIMULATOR FOR DETERMINING STRESSES AND SHAPE DEVIATIONS IN AN ADDITIVELY PRODUCED CONSTRUCTION

Office China
Application Number 201680085436.2
Application Date 25.04.2016
Publication Number 109074410
Publication Date 21.12.2018
Publication Kind A
IPC
G06F 17/50
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
50Computer-aided design
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 AG
西门子股份公司
Inventors REZNIK DANIEL
D.雷兹尼克
KASTSIAN DARYA
D.卡斯特思安
Agents 北京市柳沈律师事务所 11105
Priority Data 102016205710.3 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
(ZH) 用于确定加性地建造的建筑结构中的应力和形状偏差的方法、计算机可读的数据载体、计算机程序和模拟器
Abstract
(EN)
The invention relates to a method for determining production-related shape deviations (epsilonl,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 applicationof 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 inwhich 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 (alphai or alphal,i) are determined for the solidified construction material in order to calculate the effective thermal shrinkage (epsilonl or epsilonl,i) in each superlayer (13).

(ZH)
本发明涉及一种用于确定利用加性建造方法建造的建筑结构(11)中的与建造有关的形状偏差(εl,i)和应力的方法,所述建筑结构通过使连续的层(12)中的建筑材料凝固来产生。此外,本发明涉及这种方法用于产生校正后的建造数据(19)的应用以及其在加性建造设备中的应用。此外,本发明面向用于执行这种方法的计算机可读的数据载体或计算机程序以及面向模拟器,这种计算机程序可以在模拟器中运行。在所述方法中,使用超级层(13)来减小进行模拟时的计算开销。为了在可接受的计算开销下保证具有足够精度的模拟结果,根据本发明还设置为,确定凝固的建筑材料的有效收缩因子(αi或者αl,i),以便在每个超级层(13)中计算有效热收缩(εl或者εl,i)。