Effect of Plastic Strain on Modulus and Springback Predictions of an Aluminum Alloy

Published

January 4, 2005

Author(s)

Li Ma, Richard E. Ricker

Abstract

This paper examines the hypothesis that the under-prediction errors of current finite element analysis (FEA) springback models would be eliminated by the inclusion of changes that occur in the elastic modulus with the large plastic strains of forming. This hypothesis was evaluated by comparing the results of an FEA model that used either a constant elastic modulus or a modulus with plastic strain dependence determined from experiments, to laboratory springback measurements. This comparison found that the measured decrease in the elastic modulus with plastic strain was insufficient to fully explain the springback prediction errors.

Proceedings Title

Proceedings, 2005

Conference Dates

January 4-8, 2005

Conference Location

Undefined

Conference Title

Plasticity

Pub Type

Conferences

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Keywords

finite element analysis (FEA), metal forming, springback

Citation

Ma, L. and Ricker, R. (2005), Effect of Plastic Strain on Modulus and Springback Predictions of an Aluminum Alloy, Proceedings, 2005, Undefined, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=853363 (Accessed October 10, 2025)