Method for press forming analysis

A method for press forming analysis includes (1) performing a coordinate transformation to calculate a distribution of stress (a) before a release from the press die in a local coordinate system; (2) performing a springback analysis which includes (i) calculating a distribution of residual stress af...

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Bibliographische Detailangaben
Hauptverfasser:	Kano Hirotaka, Ishiwatari Akinobu
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING
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Beschreibung
Zusammenfassung:	A method for press forming analysis includes (1) performing a coordinate transformation to calculate a distribution of stress (a) before a release from the press die in a local coordinate system; (2) performing a springback analysis which includes (i) calculating a distribution of residual stress after the release and performing the coordinate transformation to calculate a distribution of residual stress (b) in the local coordinate system, and (ii) calculating shape data (d) after the release; (3) calculating a difference (a-b) as SB effective stress, performing a coordinate transformation to calculate a distribution of SB effective stress in a global coordinate system, changing or removing the SB effective stress in an analysis target region and performing the springback analysis to calculate a shape data (c) after the release; and (4) calculating a difference (c-d) to determine a degree of influence of the analysis target region.