On the representativeness of polycrystalline models with transformation induced plasticity

• Type: Article in International Scientific Journal
• Date: 2023

Authors

da Silva, JAM (Author) Other; de Carvalho, MV (Author) Other; Coelho, RPC (Author) Other; Lopes, IAR (Author) FEUP; F.M. Andrade Pires (Author) FEUP

Journal

Title: Finite Elements in Analysis and Design

Vol. 215

ISSN: 0168-874X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus

Other information

Authenticus ID: P-00X-JMS

DOI: 10.1016/j.finel.2022.103875

Abstract (EN): The convergence behaviour of representative volume elements (RVEs) with an increasing number of crystalline grains, which can undergo crystallographic slip and mechanically induced martensitic formation, is analysed in the present contribution. Instead of analysing a single micromechanical model subjected to relevant loading scenarios, the representativeness of the RVEs is assessed by running distinct macroscopic simulations that promote different deformation modes with several random realisations of the polycrystalline microstructure. To avoid the computational cost of FE2 approaches and make this convergence analysis feasible, a computationally efficient Taylor's condition (FE-T) is assumed. Then, an FE2 simulation is performed with periodic boundary conditions for a converged RVE size to illustrate the impact of Taylor's assumption on the macroscopic response. The introduction of martensitic transformation slightly increases the dispersion of the results. Nevertheless, the macroscopic response converges whether this phenomenon is considered or not.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14