Julia Plews

Sandia National Laboratories California

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Jesse Thomas

Sandia National Laboratories

Michael Veilleux

Sandia National Laboratories California

Timothy Shelton

Sandia National Laboratories California

Michael Tupek

Lawrence Livermore National Laboratory

Vicki Porter

University of British Columbia

Matthew Mosby

Sandia National Laboratories

Gabriel de Frias

Sandia National Laboratories California

Mark Merewether

Sandia National Laboratories

Kevin Manktelow

Sandia National Laboratories California

Frank Beckwith

Sandia National Laboratories California

Cooperative Institutions

Sandia National Laboratories California

Sandia National Laboratories

Office of Scientific and Technical Information

National Technical Information Service

The University of Texas at Austin

Duke University

Oak Ridge National Laboratory

Cornell University

Massachusetts Institute of Technology

University of California, Berkeley

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Performance of Modal Random Vibration Calculations for Structural Dynamics on Heterogeneous Computing Architectures

Julia Plews Nathan Crane

Dynamics

Random vibration

10.2172/2430534

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Sierra/SolidMechanics 4.52 User's Guide

Frank Beckwith Kenneth Belcourt Gabriel de Frias San Le Kevin Manktelow

Sierra/SolidMechanics (Sierra/SM) is a Lagrangian, three-dimensional code for finite element analysis of solids and structures. It provides capabilities for explicit dynamic, implicit quasistatic and dynamic analyses. The explicit dynamics capabilities allow for the efficient and robust solution of models with extensive contact subjected to large, suddenly applied loads. For implicit problems, Sierra/SM uses a multi-level iterative solver, which enables it to effectively solve problems with large deformations, nonlinear material behavior, and contact. Sierra/SM has a versatile library of continuum and structural elements, and a large library of material models. The code is written for parallel computing environments enabling scalable solutions of extremely large problems for both implicit and explicit analyses. It is built on the SIERRA Framework, which facilitates coupling with other SIERRA mechanics codes. This document describes the functionality and input syntax for Sierra/SM.

Solver

Quasistatic process

Code (set theory)

10.2172/1761946

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Citations (4)

Non-Intrusive Extension of a Generalized Finite Element Method for Multiscale Problems to the Abaqus Analysis Platform

Julia Plews

Source

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Citations (1)

Sierra/SD - How To Manual - 5.10

Nathan Crane David Day Clark R. Dohrmann Brian Stevens Payton Lindsay

The theory manual was developed from several sources including general notes, a programmer_notes manual, the user?s notes and of course the material in the open literature. This page intentionally left blank.

Blank

Programmer

10.2172/1886440

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Sierra/SolidMechanics 4.46 User's Guide

Nathan Crane Gabriel de Frias San Le David Littlewood Mark Merewether

Solver

Quasistatic process

Code (set theory)

10.2172/1597568

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Citations (1)

Sierra/SolidMechanics 5.10 Theory Manual

Frank Beckwith Guy Bergel Gabriel de Frias Kevin Manktelow Mark Merewether

Presented in this document are the theoretical aspects of capabilities contained in the Sierra / SM code. This manuscript serves as an ideal starting point for understanding the theoretical foundations of the code. For a comprehensive study of these capabilities, the reader is encouraged to explore the many references to scienti?c articles and textbooks contained in this manual. It is important to point out that some capabilities are still in development and may not be presented in this document. Further updates to this manuscript will be made as these capabilities come closer to production level.

Code (set theory)

10.2172/1885094

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Generalized finite element approaches for analysis of localized thermo‐structural effects

International Journal for Numerical Methods in Engineering (2015)

Julia Plews C. Armando Duarte

Summary This work addresses computational modeling challenges associated with structures subjected to sharp, local heating, where complex temperature gradients in the materials cause three‐dimensional, localized, intense stress and strain variation. Because of the nature of the applied loadings, multiphysics analysis is necessary to accurately predict thermal and mechanical responses. Moreover, bridging spatial scales between localized heating and global responses of the structure is nontrivial. A large global structural model may be necessary to represent detailed geometry alone, and to capture local effects, the traditional approach of pre‐designing a mesh requires careful manual effort. These issues often lead to cumbersome and expensive global models for this class of problems. To address them, the authors introduce a generalized FEM (GFEM) approach for analyzing three‐dimensional solid, coupled physics problems exhibiting localized heating and corresponding thermomechanical effects. The capabilities of traditional hp ‐adaptive FEM or GFEM as well as the GFEM with global–local enrichment functions are extended to one‐way coupled thermo‐structural problems, providing meshing flexibility at local and global scales while remaining competitive with traditional approaches. The methods are demonstrated on several example problems with localized thermal and mechanical solution features, and accuracy and (parallel) computational efficiency relative to traditional direct modeling approaches are discussed. Copyright © 2015 John Wiley & Sons, Ltd.

Multiphysics

10.1002/nme.4942

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Citations (10)

Sierra/SolidMechanics 4.52 User's Guide: Addendum for Shock Capabilities

Frank Beckwith Kenneth Belcourt Gabriel de Frias San Le Kevin Manktelow

This is an addendum to the Sierra/SolidMechanics 4.52 User's Guide that documents additional capabilities available only in alternate versions of the Sierra/SolidMechanics (Sierra/SM) code. These alternate versions are enhanced to provide capabilities that are regulated under the U.S. Department of State's International Traffic in Arms Regulations (ITAR) export control rules. The ITAR regulated codes are only distributed to entities that comply with the ITAR export control requirements. The ITAR enhancements to Sierra/SM include material models with an energy-dependent pressure response (appropriate for very large deformations and strain rates) and capabilities for blast modeling. This document is an addendum only; the standard Sierra/SolidMechanics 4.52 User's Guide should be referenced for most general descriptions of code capability and use.

Addendum

Code (set theory)

10.2172/1761951

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Sierra/SD - How To Manual - 5.8

Nathan Crane David A. Day Clark R. Dohrmann Brian Stevens Payton Lindsay

was developed from several sources including general notes, a programmer_notes manual, the user's notes and of course the material in the open literature. This page intentionally left blank.

Blank

Programmer

10.2172/1873621

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Sierra/SD - Theory Manual - 5.4

Dagny Beale Gregory Bunting Mark Chen Nathan Crane David Day

Sierra/SD provides a massively parallel implementation of structural dynamics ?nite element analysis, required for high ?delity, validated models used in modal, vibration, static and shock analysis of structural systems. This manual describes the theory behind many of the constructs in Sierra/SD . For a more detailed description of how to use Sierra/SD , we refer the reader to User?s Manual . Many of the constructs in Sierra/SD are pulled directly from published material. Where possible, these materials are referenced herein. However, certain functions in Sierra/SD are speci?c to our implementation. We try to be far more complete in those areas. The theory manual was developed from several sources including general notes, a programmer_notes manual, the user?s notes and of course the material in the open literature.

Programmer

10.2172/1841524

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