Computational Technology Resources - CCP

A. Shterenlikht¹, L. Margetts² and L. Cebamanos³

¹Department of Mechanical Engineering, University of Bristol, United Kingdom
²School of Mechanical, Aero and Civil Engineering, University of Manchester, United Kingdom
³Edinburgh Parallel Computing Centre (EPCC), University of Edinburgh, United Kingdom

Keywords: fracture mechanics, heterogeneous materials, multi-scale, Fortran coarrays, MPI, scaling, profiling.

Summary

All real materials are heterogeneous, e.g. polycrystalline metal alloys, reinforced concrete, carbon fibre reinforced polymer (CFRP), wood, nuclear graphite or bone. Modelling of such materials involves concurrent simulation of multiple interacting and competing physical processes, acting at different length and time scales, e.g. dislocation flow, ply debonding or separation of atomic layers. In this work we demonstrate a multi-scale fracture framework where cellular automata (CA) represents material evolution, deformation and fracture at micro- or nano-scales and finite elements (FE) are used at structural scales. Fortran coarrays offer simple and intuitive data structures for 3D CA modelling of material microstructures. Design of a coarray cellular automata microstructure evolution library CGPACK is described. Simulations of solidification, recrystallisation and grain coarsening, and fracture can be performed at arbitrary length and time scales with CGPACK. We show how coarrays can be used together with an MPI FE library to create a two-way concurrent hierarchical and scalable multi-scale CAFE deformation and fracture framework. Strong scaling of a hybrid ParaFEM/CGPACK MPI/coarray multi-scale framework was measured on Cray for a simulation of a fracture of a steel round bar under tension. The program scales up to 7,000 cores.

purchase the full-text of this paper (price £22)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £45 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 111 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON PARALLEL, DISTRIBUTED, GRID AND CLOUD COMPUTING FOR ENGINEERING Edited by: Paper 40 Fortran coarray/MPIMulti-Scale CAFE for Fracture in Heterogeneous Materials A. Shterenlikht¹, L. Margetts² and L. Cebamanos³ ¹Department of Mechanical Engineering, University of Bristol, United Kingdom ²School of Mechanical, Aero and Civil Engineering, University of Manchester, United Kingdom ³Edinburgh Parallel Computing Centre (EPCC), University of Edinburgh, United Kingdom doi:10.4203/ccp.111.40 purchase the full-text of this paper Full Bibliographic Reference for this paper A. Shterenlikht, L. Margetts, L. Cebamanos, "Fortran coarray/MPIMulti-Scale CAFE for Fracture in Heterogeneous Materials", in , (Editors), "Proceedings of the Fifth International Conference on Parallel, Distributed, Grid and Cloud Computing for Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 40, 2017. doi:10.4203/ccp.111.40 Keywords: fracture mechanics, heterogeneous materials, multi-scale, Fortran coarrays, MPI, scaling, profiling. Summary All real materials are heterogeneous, e.g. polycrystalline metal alloys, reinforced concrete, carbon fibre reinforced polymer (CFRP), wood, nuclear graphite or bone. Modelling of such materials involves concurrent simulation of multiple interacting and competing physical processes, acting at different length and time scales, e.g. dislocation flow, ply debonding or separation of atomic layers. In this work we demonstrate a multi-scale fracture framework where cellular automata (CA) represents material evolution, deformation and fracture at micro- or nano-scales and finite elements (FE) are used at structural scales. Fortran coarrays offer simple and intuitive data structures for 3D CA modelling of material microstructures. Design of a coarray cellular automata microstructure evolution library CGPACK is described. Simulations of solidification, recrystallisation and grain coarsening, and fracture can be performed at arbitrary length and time scales with CGPACK. We show how coarrays can be used together with an MPI FE library to create a two-way concurrent hierarchical and scalable multi-scale CAFE deformation and fracture framework. Strong scaling of a hybrid ParaFEM/CGPACK MPI/coarray multi-scale framework was measured on Cray for a simulation of a fracture of a steel round bar under tension. The program scales up to 7,000 cores. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £45 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions