An approach for model validation in simulating sheet metal flanging processes

Thaweepat Buranathiti*, Cao Jian, Lusine Baghdasaryan, Wei Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Model validation has become an increasingly important issue to establish the trustworthiness of models in the era where numerical simulations have demonstrated their benefits in reducing development time and cost. Advanced numerical methods are continuously developed for solving more complex and challenging problems, and one of them is the sheet metal forming process, which involves large deformation, contact between tooling and sheet materials, nonlinear plasticity, and process uncertainties, etc. Therefore, any numerical simulation method is inevitably asked about its validity. This paper studied one of the typical sheet metal forming processes, flanging process, and examined the validity of two numerical models in predicting the final geometry or springback. The corresponding uncertainties in both material properties and process parameters were investigated and inputted to the propagation of uncertainty analysis, where metamodels were developed to effectively and efficiently compute the total uncertainty of the final geometry. Three validation frameworks were used to test the model validity for the sample flanging process. It was found that different conclusions could be drawn from different approaches. Therefore, it is highly recommended to take a combined approach for model validation.

Original languageEnglish (US)
Title of host publicationProceedings of the 5th International Conference on Frontiers of Design and Manufacturing (ICFDM'2002)
EditorsD. Guo, D. Wang, Z. Jia, J. Wang, D. Guo, D. Wang, Z. Jia, J. Wang
Pages75-85
Number of pages11
StatePublished - Dec 1 2002
EventProceedings of the 5th International Conference on Frontiers of Design and Manufacturing (ICFDM'2002) - Dalian, China
Duration: Jul 10 2002Jul 12 2002

Other

OtherProceedings of the 5th International Conference on Frontiers of Design and Manufacturing (ICFDM'2002)
CountryChina
CityDalian
Period7/10/027/12/02

ASJC Scopus subject areas

  • Engineering(all)

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