EFFECTS OF DIFFERENT OPTIMIZATION METHODS ON THE PREDICTIONS OF YLD2000 YIELD CRITERION COEFFICIENTS
Küçük Resim Yok
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The improved yield criteria are generally used in the finite element simulations of plastic deformationprocesses. Calculation accuracies of these criteria coefficients result successful simulation outcomes. In thisstudy, the coefficients of the YLD2000 yield criterion are calculated by three most widely used optimizationmethods in literature, namely the least squares, nonlinear conditional optimization, and genetic algorithmmethods. Two different aluminum alloys, AA7003-T6 and AA6063-T6 are selected to verify the predictionresults. Results reveal that the nonlinear conditional optimization and genetic algorithm methods are verydependent on the initial values. Therefore, different result is determined for each different case. For this reason,it has been concluded that the least squares method should be preferred to calculate the coefficients of the yieldcriterion by using optimizing method.
Açıklama
Anahtar Kelimeler
Matematik, Malzeme Bilimleri, Özellik ve Test, İstatistik ve Olasılık
Kaynak
Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
8
Sayı
1
