A new algorithm for the fast and stable identification of FAY coefficients and its application as a universal platform for yield surface modeling. (15th December 2020)

• Record Type: Journal Article
• Authors: Manopulo, Niko; Carleer, Bart
• Is Part Of: International journal of solids and structures. Volume 207(2020)
• Page Start: 1
• Page End: 10
• Publication Date: 2020-12-15
• Subjects: Material modeling -- Yield surfaces -- Sheet Metal Forming; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2020.10.007
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: A new approach is proposed for enabling the exchange and testing of arbitrary yield surface models, solely based on a set of Fourier coefficients. This effectively reduces the implementation efforts to a single generic model description. The proposed method exploits the Fast Fourier Transform algorithm to identify a unique set of coefficients of the FAY model based on any plane stress yield surface model. The approach is tested based on well-known yield functions and is analyzed with respect to accuracy and convexity. Finally a universal yield surface format is proposed for exchanging FAY coefficients in scientific and technical communities.