Numerical Simulations of the Microscale Material Phenomena Based on Cellular Automata Framework and Workflow Idea

Abstract

The multiscale modelling of material behaviour during processes of heating and cooling or under loading conditions is highly sophisticated numerical problem. It requires many advanced algorithms solving a thermo-mechanical issues in macro scale as well as algorithms simulating undergoing processes of microstructure evolution, e.g. recrystallization, phase transformation or fracture occurring in micro and nano scales. These phenomena are closely coupled and depends on each other. To properly illustrate this behaviour the numerical algorithms have to be also arranged together in various configurations, e.g. simultaneously, sequentially, iteratively or conditionally. This eventually leads to complex numerical solutions. Coupling various micro scale evolution models always presents difficulties and requires a high-level framework responsible for exchange of data through programming interfaces. A static component diagram and reverse engineering is not sufficient to satisfy requirements of such advanced approaches. Therefore, authors decided to apply the dynamic workflow idea into the microstructure evolution simulations. The dynamic workflow supports design of complex algorithm with flexible data flow and reusable components. The computer program implemented on the basis of the Windows Workflow Foundation and results obtained from simulations are presented in the paper.