METHOD FOR PREDICTING DEFORMING OR RESIDUAL STRESS, AND PROGRAM

Title:

METHOD FOR PREDICTING DEFORMING OR RESIDUAL STRESS, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2023/195454

Kind Code:

A1

Abstract:

The present invention provides a prediction method (correction thermal shrinkage method) with which it is possible to accurately predict, in a short time, deforming or residual stress occurring due to a heated object returning to normal temperature. A prediction method according to the present invention includes predicting deforming or residual stress occurring due to a heated object returning to normal temperature, the prediction method being characterized by including: a condition-setting step for setting a first shrinkage region and a second shrinkage region in a model for analyzing the object, and setting a first temperature change amount in the first shrinkage region and a second temperature change amount in the second shrinkage region; and an analysis step for imparting a first shrinkage strain calculated from the first temperature change amount to the first shrinkage region, and imparting a second shrinkage strain calculated from the second temperature change amount to the second shrinkage region, to analyze elasticity or elastoplasticity.

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Inventors:

SHIBAHARA MASAKAZU (JP)
IKUSHIMA KAZUKI (JP)
MAEDA SHINTARO (JP)
KATO TAKUYA (JP)
TEZEN TOWA (JP)
YASUDA SHOGO (JP)
LEE JIHO (JP)

Application Number:

PCT/JP2023/013846

Publication Date:

October 12, 2023

Filing Date:

April 03, 2023

Export Citation:

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Assignee:

UNIV OSAKA PUBLIC CORP (JP)

International Classes:

G01N3/00; B23K31/00; G01N3/60; G01N25/18

Foreign References:

JP2006126076A	2006-05-18
JP2009048361A	2009-03-05
JP2011159213A	2011-08-18

Other References:

MURAKAMI HIROKI: "Construction of a simple analysis method for welding distortion by thermal shrinkage technique and research on its application to actual machines", DISSERTATION OSAKA UNIVERSITY, 1 January 2022 (2022-01-01), pages 1 - 101, XP093096111, DOI: 10.18910/88049

Attorney, Agent or Firm:

NOGAWA, Nobuhisa et al. (JP)

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