Materials Chain 2016
نویسندگان
چکیده
Advanced High Strength Steels (AHSS) provide a good combination of both strength and formability and are therefore applied extensively in the automotive industry, especially in the crash relevant parts of the vehicle. Dual-phase (DP) steel is an example for such AHSS which is widely employed. The excellent macroscopic behavior of this steel is a result of the inherent micro-heterogeneity and complex interactions between the ferritic and martensitic phases in the microstructure. Thus, considering the microscale is indispensable for realistic simulations. Radical Scale Bridging by FE-Framework (FE2TI) The FE-method as illustrated for the Nakajima test below on the right, cf. [1, 2], is a direct multiscale method and provides a suitable numerical tool for radical scale bridging. We present our successfull FE implementation FE2TI developed in the EXASTEEL project (SPPEXA), which we have scaled to 458 752 cores and 1.8×10 MPI ranks of JUQUEEN [3] and to the complete Mira (786K cores) at Argonne National Laboratory [4]. Inexact or exact FETI-DP methods are used to solve the 3D microscopic boundary value problems.
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