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  • RPI SCOREC - Technical Reports
    investigated In this work an elastoviscoplastic polycrystalline model is used for the analysis The deformation in each crystal is assumed to be composed of three parts plastic slip along crystallographic slip systems an elastic stretch of the lattice and a rigid rotation of the lattice It is commonly believed that for metals at large strains the elastic part of the deformation can be neglected in many cases It has been

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=195 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    Journal of Mechanical Science Volume 38 6 Pages 607 619 Abstract This work presents a simplified means to determine the axial contact pressure distribution between two pinched flexible rubber clad cylindrical rolls that are aligned with axes skewed Of particular interest is the effect of the skew angle on the axial contact pressure distribution A finite element model is used with beam elements to model the bending of the roll

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=196 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    Multilevel Preconditioned QMR Methods for Unstructured Mesh Computation Year 1996 Journal Computer Methods in Applied Mechanics and Engineering Volume 149 Pages 339 351 Abstract We present a variant of the Quasi Minimal Residual QMR algorithm of Freund and Nachtigal with a preconditioner based on the Algebraic Multilevel AMLI algorithm of Axelsson and Vassilevski This combination provides an effective solution method for indefinite algebraic systems and is tested by application to

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=197 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    the Northeastern United States One of the most important mechanisms that sustains the epidemic is the interaction between white footed mice Peromyscus leucopus and deer ticks Ixodes scapularis When mice move around in their territory they carry diseased ticks to new locations Our system simulates the different developmental stages of the tick through its active Spring Summer period The system uses the optimistic protocol for Parallel Discrete Event Simulation In

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=198 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    paper presents simulation results of a spatially explicit individual based discrete state model of two species competing for growth sites An organism s survival and reproduction usually depend on interactions with nearby individuals Predicting how these local processes influence population levels and community level patterns requires spatially explicit models In environments disturbed by high birth and death rates an inferior species could invade and coexist with a superior species A

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=199 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    process by providing an application oriented view of programming while facilitating program modification and reuse Since the software design crisis is particularly acute in parallel computation these techniques have stirred the interest of the scientific parallel computing community Large scale applications of ever growing complexity particularly in the physical sciences and engineering require parallel processing for efficiency Since its introduction in the 1970 s Fortran 77 has been the language

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=200 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    and the geometry of new mesh on the model face The mesh matching procedure is applied as the last step in the mesh generation process and is used only if mesh matching is required This thesis also describes some of the tools that are required by the mesh matching procedures Some of the procedures need efficient data structure to quickly determine if two mesh entities intersect These procedures are very

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=201 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    Engineering Volume 39 7 Pages 1181 1197 Abstract An accelerated multigrid method which exploits shell element formulation to speed up the iterative process is developed for inherently poor conditioned thin domain problems on unstructured grids Its building blocks are i intergrid transfer operators based on the shell element shape functions ii heavy smoothing procedures in the form of Modified Incomplete Cholesky factor and iii various two and three parameter acceleration

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=202 (2015-07-15)
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