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Title:
PREDICTION METHOD FOR TENSION COMPRESSION REVERSAL LOAD BEHAVIOR OF METAL MATERIAL
Document Type and Number:
Japanese Patent JP2023037100
Kind Code:
A
Abstract:
To provide a method for predicting tension compression reversal load behavior of a metal material capable of determining a model constant of a material model expressing tension compression reversal load behavior of a metal material based on results of a simple uniaxial tensile test, and thereby predicting the tension compression reversal load behavior of the metal material.SOLUTION: A method for predicting tension compression reversal load behavior of a metal material predicts the tension compression reversal load behavior by determining a model constant of a material model. The method comprises a step of obtaining a value of the model constant of the metal material by inputting the metal material test data of the metal material to be predicted relative to a learned model in which machine learning is performed with metal material test data including a factor related to uniaxial tensile behavior of the metal material being an input variable and a value of the model constant determined based on a tension compression test of the metal material as an output variable. In a factor related to uniaxial tensile behavior, point sequence data is included obtained by discretizing a uniaxial tensile stress-strain curve obtained from a uniaxial tensile test.SELECTED DRAWING: Figure 1

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Inventors:
AGEBA RYO
SUMIKAWA SATOSHI
Application Number:
JP2021143634A
Publication Date:
March 15, 2023
Filing Date:
September 03, 2021
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
G01N3/00; G01N3/08
Domestic Patent References:
JP2013054001A2013-03-21
JP2000275154A2000-10-06
JP2005315703A2005-11-10
Foreign References:
WO2014141794A12014-09-18
WO2015170742A12015-11-12
CN111339703A2020-06-26
Other References:
桑原　利彦: "軽金属板材の塑性変形特性　ー測定とモデル化の手法ー", 軽金属, vol. 第65巻第5号, JPN6022032761, 2015, pages 164 - 173, ISSN: 0004900231
JIANPING LIN: "Effect of constitutive model on springback prediction of MP980 and AA6022-T4", INTERNATIONAL JOURNAL OF MATERIAL FORMING, JPN6022032762, 14 January 2019 (2019-01-14), ISSN: 0004900232
Attorney, Agent or Firm:
Toshihiko Ishikawa



 
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