Spectral Solvers for Crystal Plasticity and Multi-physics Simulations

Pratheek Shanthraj

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The local and global behavior of materials with internal microstructure is often investigated on a (representative) volume element. Typically, periodic boundary conditions are applied on such “virtual specimens” to reflect the situation in the bulk of the material. Spectral methods based on Fast Fourier Transforms (FFT) have been established as a powerful numerical tool especially suited for this task. Starting from the pioneering work of Moulinec and Suquet, FFT-based solvers have been significantly improved with respect to performance and stability. Recent advancements of using the spectral approach to solve coupled field equations enable also the modeling of multiphysical phenomena such as fracture propagation, temperature evolution, chemical diffusion, and phase transformation in conjunction with the mechanical boundary value problem. The fundamentals of such a multi-physics framework, which is implemented in the Düsseldorf Advanced Materials Simulation Kit (DAMASK), are presented here together with implementation aspects. The capabilities of this approach are demonstrated on illustrative examples.
Original languageEnglish
Title of host publicationHandbook of Mechanics of Materials
EditorsChun-Hway Hsueh
Place of PublicationSingapore
PublisherSpringer Nature
Chapter43
Pages1347-1372
Number of pages26
ISBN (Electronic)9789811068843
ISBN (Print)9789811068836
Publication statusPublished - Feb 2019

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