Strain-path dependent hardening models with rigorously identical predictions under monotonic loading
Type
Articles dans des revues avec comité de lectureAuthor
Date
2020Journal
Mechanics Research CommunicationsAbstract
Accurate sheet metal simulation often requires advanced strain-path dependent material models, in order to predict the material response under complex loading conditions, including monotonic, reverse and orthogonal paths. More and more flexible models imply higher and higher costs in terms of parameter identification, computer implementation and simulation time, and robust comparison is often compromised by the inconsistent predictions of advanced models under monotonic loading. In this paper, a simple and general approach is proposed for the alteration of advanced hardening models in order to make them rigorously identical to each other under monotonic loading. This objective was reached without any drawback other than the addition of the corresponding equations. On the contrary, the flexibility and accuracy of the selected models was improved, and the parameter identification procedure became simpler, more accurate and more robust. Three material models of increasing complexity were selected to demonstrate the interest of this approach with respect to a complete set of characterisation experiments for a DP600 sheet steel.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
YANG, Yanfeng; BAUDOUIN, Cyrille; BALAN, Tudor (IOP Publishing, 2018)Abrupt strain path changes without elastic unloading have been used in the literature to investigate the yield surface of sheet metals, both experimentally and theoretically. Such pioneering studies emphasized an apparent ...
-
RACZ, Sever-Gabriel; KHAN, Salim; CHALAL, Hocine; ABED-MERAIM, Farid; BALAN, Tudor (Francisco Chinesta , Yvan Chastel and Mohamed El Mansori, 2011)Within the framework of sheet metal forming, the importance of hardening models for springback predictions has been often emphasized. While some specific applications require very accurate models, in many common situations ...
-
MANSOURI, Lotfi; CHALAL, Hocine; ABED-MERAIM, Farid; BALAN, Tudor (E. Oñate, D.R.J. Owen, D. Peric and B. Suárez, 2011)The strain localization phenomenon that may occur during sheet metal forming represents a major cause of defective parts produced in the industry. Several instability criteria have been developed in the literature to predict ...
-
CHALAL, Hocine; RACZ, Sever-Gabriel; BALAN, Tudor (Trans Tech Publications, 2012)In this paper, we investigate the springback behavior of several advanced high-strength sheet steels (TRIP, Dual-Phase, ferrite-bainite) with thicknesses up to 4 mm. Samples were tested by means of the bending-under-tension ...
-
SALAHOUELHADJ, Abdellah; CHALAL, Hocine; ABED-MERAIM, Farid; BALAN, Tudor (Onate, E; Owen, DRJ; Peric, D; Suarez, B, 2011)In this contribution, the formulation of the SHB8PS continuum shell finite element is extended to anisotropic elastic-plastic behavior models with combined isotropic-kinematic hardening at large deformations. The resulting ...