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An Analytical Model for Spring-Back Prediction in U-Channel Forming with Advanced High Strength Steel
Technical Paper
2018-01-0805
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Spring-back phenomena are critical in stamping procedures for advanced high strength steel. An analytical model is developed to predict the spring-back effect for a U-channel part with post-stretching process. The stress distribution is obtained by direct application of material constitutive relationship. The subjected loading conditions are sequentially bending, (un-bending), and uniform stretching, based on different zones in the part. Both the loading history and the friction effects are considered in the model. The bending moments are obtained to generate a theoretical spring-back shape. Great performance in spring-back control is achieved by applying certain high level of external forces. FE simulation is conducted for the identical stamping process with post-stretching. Good correlation is observed between the analytical and numerical solutions/experimental results under various scenarios.
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Jia, Y., Pu, C., Zhu, F., and Wang, Y., "An Analytical Model for Spring-Back Prediction in U-Channel Forming with Advanced High Strength Steel," SAE Technical Paper 2018-01-0805, 2018, https://doi.org/10.4271/2018-01-0805.Data Sets - Support Documents
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