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김용관(Y. G. Kim),윤용석(Y. S. Yoon),이경훈(K. H. Lee) 한국소성가공학회 2016 한국소성가공학회 학술대회 논문집 Vol.2016 No.4
Internal void are usually present in ingot, bloom, slab produced by casting. These voids must be closed in the subsequent process such as forging(upsetting, cogging) or rolling to ensure high quality of the product. In this work, Multi-scale method has been applied to predict the defect behavior in metal forming process. Void Model which constructed for a ingot containing a void and RVE Model which is representative volume element of a void are simulated by finite element analysis. Deformation behavior of void in two models was compared.