Simulation of micromechanical behavior of polycrystals: finite elements versus fast Fourier transforms

A Prakash, R A Lebensohn
2009 Modelling and Simulation in Materials Science and Engineering  
In this work, we compare finite element and fast Fourier transform approaches for the prediction of the micromechanical behavior of polycrystals. Both approaches are full-field approaches and use the same visco-plastic single crystal constitutive law. We investigate the texture and the heterogeneity of the inter-and intragranular stress and strain fields obtained from the two models. Additionally, we also look into their computational performance. Two casesrolling of aluminum and wire drawing
more » ... tungsten-are used to evaluate the predictions of the two models. Results from both the models are similar, when large grain distortions do not occur in the polycrystal. The finite element simulations were found to be highly computationally intensive, in comparison with the fast Fourier transform simulations.
doi:10.1088/0965-0393/17/6/064010 fatcat:b7vsjha64vft7drv4ng6znfspi