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Title: An integrated approach to the parallel processing of explicit/discrete element problems
Author: Macedo, J. M. P.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 1997
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A framework to implement parallel programs able to run on shared and/or distributed memory machines has been developed in the present thesis, using an explicit finite/discrete element code as proof of the principle. A system, termed SMeM, conveniently documented with an interface to web browsers, has been designed and implemented to create an interface to parallel programs using shared memory parallel machines. The system contains a set of libraries to be used by C language and/or FORTRAN programs, providing real time/post mortem event/state log system and debugging facilities, including a mechanism to activate a debugger within the processes of a parallel program. An explicit finite/discrete element code has been parallelised, using the library, able to run on shared and/or distributed memory machines, and to solve large strain elasto-plastic problems using adaptive remeshing techniques. Some specific algorithms have been implemented in order to create an efficient parallel solution, namely: a parallel contact detection algorithm using an alternating digital tree; a more efficient dual graph to be used by domain decomposers and, for contact problems, a fast algorithm to define the boundary of the finite element domain; and a technique to identify the underlining elements of the old mesh associated to the nodal points on the regenerated mesh, when adaptivity is involved.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available