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A 3D Orthotropic Elastic Continuum Damage Material Model

English, Shawn A.; Brown, Arthur

A three dimensional orthotropic elastic constitutive model with continuum damage is implemented for polymer matrix composite lamina. Damage evolves based on a quadratic homogeneous function of thermodynamic forces in the orthotropic planes. A small strain formulation is used to assess damage. In order to account for large deformations, a Kirchhoff material formulation is implemented and coded for numerical simulation in Sandia’s Sierra Finite Element code suite. The theoretical formulation is described in detail. An example of material parameter determination is given and an example is presented.

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TYPE SAND Report YEAR 2013
DOIOSTI

Building guide : how to build Xyce from source code

Keiter, Eric R.; Russo, Thomas V.; Schiek, Richard; Thornquist, Heidi K.; Mei, Ting; Verley, Jason C.; Sholander, Peter E.

While Xyce uses the Autoconf and Automake system to configure builds, it is often necessary to perform more than the customary %E2%80%9C./configure%E2%80%9D builds many open source users have come to expect. This document describes the steps needed to get Xyce built on a number of common platforms.

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TYPE SAND Report YEAR 2013
DOIOSTI

Xyce parallel electronic simulator users guide, version 6.0

Russo, Thomas V.; Mei, Ting; Keiter, Eric R.; Schiek, Richard; Thornquist, Heidi K.; Verley, Jason C.; Coffey, Todd S.; Pawlowski, Roger; Warrender, Christina E.

This manual describes the use of the Xyce Parallel Electronic Simulator. Xyce has been designed as a SPICE-compatible, high-performance analog circuit simulator, and has been written to support the simulation needs of the Sandia National Laboratories electrical designers. This development has focused on improving capability over the current state-of-the-art in the following areas: Capability to solve extremely large circuit problems by supporting large-scale parallel computing platforms (up to thousands of processors). This includes support for most popular parallel and serial computers. A differential-algebraic-equation (DAE) formulation, which better isolates the device model package from solver algorithms. This allows one to develop new types of analysis without requiring the implementation of analysis-specific device models. Device models that are specifically tailored to meet Sandias needs, including some radiationaware devices (for Sandia users only). Object-oriented code design and implementation using modern coding practices. Xyce is a parallel code in the most general sense of the phrase a message passing parallel implementation which allows it to run efficiently a wide range of computing platforms. These include serial, shared-memory and distributed-memory parallel platforms. Attention has been paid to the specific nature of circuit-simulation problems to ensure that optimal parallel efficiency is achieved as the number of processors grows.

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TYPE SAND Report YEAR 2013
DOIOSTI

Xyce parallel electronic simulator reference guide, version 6.0

Keiter, Eric R.; Mei, Ting; Russo, Thomas V.; Pawlowski, Roger; Schiek, Richard; Coffey, Todd S.; Thornquist, Heidi K.; Verley, Jason C.; Warrender, Christina E.

This document is a reference guide to the Xyce Parallel Electronic Simulator, and is a companion document to the Xyce Users Guide [1] . The focus of this document is (to the extent possible) exhaustively list device parameters, solver options, parser options, and other usage details of Xyce. This document is not intended to be a tutorial. Users who are new to circuit simulation are better served by the Xyce Users Guide [1] .

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TYPE SAND Report YEAR 2013
DOIOSTI

Sandia Micro-fabricated Ion Traps for the MUSIQC architecture

Maunz, Peter L.W.; Heller, Edwin J.; Hollowell, Andrew E.; Kemme, Shanalyn A.; Loviza, Becky G.; Mizrahi, Jonathan A.; Ortega, Anathea C.; Scrymgeour, David; Sterk, Jonathan D.; Tigges, Chris P.; Dagel, Amber; Clark, Craig R.; Stick, Daniel L.; Blain, Matthew G.; Clark, Susan M.; Resnick, Paul; Arrington, Christian L.; Benito, Francisco M.; Boye, Robert; Ellis, A.R.; Haltli, Raymond A.

Abstract not provided.

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TYPE Conference YEAR 2013
OSTI

General purpose steam table library :

Carpenter, John H.; Belcourt, Kenneth

Completion of the CASL L3 milestone THM.CFD.P7.04 provides a general purpose tabular interpolation library for material properties to support, in particular, standardized models for steam properties. The software consists of three parts, implementations of analytic steam models, a code to generate tables from those models, and an interpolation package to interface the tables to CFD codes such as Hydra-TH. Verification of the standard model is maintained through the entire train of routines. The performance of interpolation package exceeds that of freely available analytic implementation of the steam properties by over an order of magnitude.

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TYPE SAND Report YEAR 2013
DOIOSTI
Results 56901–57000 of 99,299
Results 56901–57000 of 99,299