MultiPhysicsVault/.raw/AbaqusAnalysisUserGuide4/AbaqusAnalysisUserGuide4_002.md

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OI.1 Abaqus/Standard Output Variable Index   
OI.2 Abaqus/Explicit Output Variable Index   
OI.3 Abaqus/CFD Output Variable Index

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# Volume II

# PART III ANALYSIS PROCEDURES, SOLUTION, AND CONTROL

# 6. Analysis Procedures

# Introduction

Solving analysis problems: overview 6.1.1

Defining an analysis 6.1.2

General and linear perturbation procedures 6.1.3

Multiple load case analysis 6.1.4

Direct linear equation solver 6.1.5

Iterative linear equation solver 6.1.6

# Static stress/displacement analysis

Static stress analysis procedures: overview 6.2.1

Static stress analysis 6.2.2

Eigenvalue buckling prediction 6.2.3

Unstable collapse and postbuckling analysis 6.2.4

Quasi-static analysis 6.2.5

Direct cyclic analysis 6.2.6

Low-cycle fatigue analysis using the direct cyclic approach 6.2.7

# Dynamic stress/displacement analysis

Dynamic analysis procedures: overview 6.3.1

Implicit dynamic analysis using direct integration 6.3.2

Explicit dynamic analysis 6.3.3

Direct-solution steady-state dynamic analysis 6.3.4

Natural frequency extraction 6.3.5

Complex eigenvalue extraction 6.3.6

Transient modal dynamic analysis 6.3.7

Mode-based steady-state dynamic analysis 6.3.8

Subspace-based steady-state dynamic analysis 6.3.9

Response spectrum analysis 6.3.10

Random response analysis 6.3.11

# Steady-state transport analysis

Steady-state transport analysis 6.4.1

# Heat transfer and thermal-stress analysis

Heat transfer analysis procedures: overview 6.5.1

Uncoupled heat transfer analysis 6.5.2

Fully coupled thermal-stress analysis 6.5.3

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Adiabatic analysis 6.5.4

# Fluid dynamic analysis

Fluid dynamic analysis procedures: overview 6.6.1

Incompressible fluid dynamic analysis 6.6.2

# Electromagnetic analysis

Electromagnetic analysis procedures 6.7.1

Piezoelectric analysis 6.7.2

Coupled thermal-electrical analysis 6.7.3

Fully coupled thermal-electrical-structural analysis 6.7.4

Eddy current analysis 6.7.5

Magnetostatic analysis 6.7.6

# Coupled pore fluid flow and stress analysis

Coupled pore fluid diffusion and stress analysis 6.8.1

Geostatic stress state 6.8.2

# Mass diffusion analysis

Mass diffusion analysis 6.9.1

# Acoustic and shock analysis

Acoustic, shock, and coupled acoustic-structural analysis 6.10.1

# Abaqus/Aqua analysis

Abaqus/Aqua analysis 6.11.1

# Annealing

Annealing procedure 6.12.1

# 7. Analysis Solution and Control

# Solving nonlinear problems

Solving nonlinear problems 7.1.1

# Analysis convergence controls

Convergence and time integration criteria: overview 7.2.1

Commonly used control parameters 7.2.2

Convergence criteria for nonlinear problems 7.2.3

Time integration accuracy in transient problems 7.2.4

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# PART IV ANALYSIS TECHNIQUES

# 8. Analysis Techniques: Introduction

# Introduction

Analysis techniques: overview 8.1.1

# 9. Analysis Continuation Techniques

# Restarting an analysis

Restarting an analysis 9.1.1

# Importing and transferring results

Transferring results between Abaqus analyses: overview 9.2.1

Transferring results between Abaqus/Explicit and Abaqus/Standard 9.2.2

Transferring results from one Abaqus/Standard analysis to another 9.2.3

Transferring results from one Abaqus/Explicit analysis to another 9.2.4

# 10. Modeling Abstractions

# Substructuring

Using substructures 10.1.1

Defining substructures 10.1.2

# Submodeling

Submodeling: overview 10.2.1

Node-based submodeling 10.2.2

Surface-based submodeling 10.2.3

# Generating matrices

Generating matrices 10.3.1

Generating thermal matrices 10.3.2

# Symmetric model generation, results transfer, and analysis of cyclic symmetry models

Symmetric model generation 10.4.1

Transferring results from a symmetric mesh or a partial three-dimensional mesh to a full three-dimensional mesh 10.4.2

Analysis of models that exhibit cyclic symmetry 10.4.3

# Periodic media analysis

Periodic media analysis 10.5.1

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# Meshed beam cross-sections

Meshed beam cross-sections 10.6.1

# Modeling discontinuities as an enriched feature using the extended finite element method

Modeling discontinuities as an enriched feature using the extended finite element method 10.7.1

# 11. Special-Purpose Techniques

# Inertia relief

Inertia relief 11.1.1

# Mesh modification or replacement

Element and contact pair removal and reactivation 11.2.1

# Geometric imperfections

Introducing a geometric imperfection into a model 11.3.1

# Fracture mechanics

Fracture mechanics: overview 11.4.1

Contour integral evaluation 11.4.2

Crack propagation analysis 11.4.3

# Surface-based fluid modeling

Surface-based fluid cavities: overview 11.5.1

Fluid cavity definition 11.5.2

Fluid exchange definition 11.5.3

Inflator definition 11.5.4

# Mass scaling

Mass scaling 11.6.1

# Selective subcycling

Selective subcycling 11.7.1

# Steady-state detection

Steady-state detection 11.8.1

# 12. Adaptivity Techniques

# Adaptivity techniques: overview

Adaptivity techniques 12.1.1

# ALE adaptive meshing

ALE adaptive meshing: overview 12.2.1

Defining ALE adaptive mesh domains in Abaqus/Explicit 12.2.2

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ALE adaptive meshing and remapping in Abaqus/Explicit 12.2.3

Modeling techniques for Eulerian adaptive mesh domains in Abaqus/Explicit 12.2.4

Output and diagnostics for ALE adaptive meshing in Abaqus/Explicit 12.2.5

Defining ALE adaptive mesh domains in Abaqus/Standard 12.2.6

ALE adaptive meshing and remapping in Abaqus/Standard 12.2.7

# Adaptive remeshing

Adaptive remeshing: overview 12.3.1

Selection of error indicators influencing adaptive remeshing 12.3.2

Solution-based mesh sizing 12.3.3

# Analysis continuation after mesh replacement

Mesh-to-mesh solution mapping 12.4.1

# 13. Optimization Techniques

# Structural optimization: overview

Structural optimization: overview 13.1.1

# Optimization models

Design responses 13.2.1

Objectives and constraints 13.2.2

Creating Abaqus optimization models 13.2.3

# 14. Eulerian Analysis

# Eulerian analysis

Eulerian analysis 14.1.1

Defining Eulerian boundaries 14.1.2

Eulerian mesh motion 14.1.3

Defining adaptive mesh refinement in the Eulerian domain 14.1.4

# 15. Particle Methods

# Discrete element method

Discrete element method 15.1.1

# Continuum particle analyses

Smoothed particle hydrodynamics 15.2.1

Finite element conversion to SPH particles 15.2.2

# Particle generator

Particle generator 15.3.1

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# 16. Sequentially Coupled Multiphysics Analyses

# Sequentially coupled multiphysics analyses

Predefined fields for sequential coupling 16.1.1

Sequentially coupled thermal-stress analysis 16.1.2

Predefined loads for sequential coupling 16.1.3

# 17. Co-simulation

# Co-simulation

Co-simulation: overview 17.1.1

# Preparing an Abaqus analysis for co-simulation

Preparing an Abaqus analysis for co-simulation 17.2.1

# Co-simulation between Abaqus solvers

Structural-to-structural co-simulation 17.3.1

Fluid-to-structural and conjugate heat transfer co-simulation 17.3.2

Electromagnetic-to-structural and electromagnetic-to-thermal co-simulation 17.3.3

Executing a co-simulation 17.3.4

# Co-simulation using Abaqus and discrete models

Structural-to-logical co-simulation 17.4.1

# 18. Extending Abaqus Analysis Functionality

# User subroutines and utilities

User subroutines: overview 18.1.1

Available user subroutines 18.1.2

Available utility routines 18.1.3

# 19. Design Sensitivity Analysis

# Design sensitivity analysis

Design sensitivity analysis 19.1.1

# 20. Parametric Studies

# Scripting parametric studies

Scripting parametric studies 20.1.1

# Parametric studies: commands

aStudy.combine(): Combine parameter samples for parametric studies. 20.2.1

aStudy.constrain(): Constrain parameter value combinations in parametric studies. 20.2.2

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# CONTENTS

aStudy.define(): Define parameters for parametric studies. 20.2.3

aStudy.execute(): Execute the analysis of parametric study designs. 20.2.4

aStudy.gather(): Gather the results of a parametric study. 20.2.5

aStudy.generate(): Generate the analysis job data for a parametric study. 20.2.6

aStudy.output(): Specify the source of parametric study results. 20.2.7

aStudy=ParStudy(): Create a parametric study. 20.2.8

aStudy.report(): Report parametric study results. 20.2.9

aStudy.sample(): Sample parameters for parametric studies. 20.2.10

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# Volume III

# PART V MATERIALS

# 21. Materials: Introduction

# Introduction

Material library: overview 21.1.1

Material data definition 21.1.2

Combining material behaviors 21.1.3

# General properties

Density 21.2.1

# 22. Elastic Mechanical Properties

# Overview

Elastic behavior: overview 22.1.1

# Linear elasticity

Linear elastic behavior 22.2.1

No compression or no tension 22.2.2

Plane stress orthotropic failure measures 22.2.3

# Porous elasticity

Elastic behavior of porous materials 22.3.1

# Hypoelasticity

Hypoelastic behavior 22.4.1

# Hyperelasticity

Hyperelastic behavior of rubberlike materials 22.5.1

Hyperelastic behavior in elastomeric foams 22.5.2

Anisotropic hyperelastic behavior 22.5.3

# Stress softening in elastomers

Mullins effect 22.6.1

Energy dissipation in elastomeric foams 22.6.2

# Linear viscoelasticity

Time domain viscoelasticity 22.7.1

Frequency domain viscoelasticity 22.7.2

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# Nonlinear viscoelasticity

Hysteresis in elastomers 22.8.1

Parallel rheological framework 22.8.2

# Rate sensitive elastomeric foams

Low-density foams 22.9.1

# 23. Inelastic Mechanical Properties

# Overview

Inelastic behavior 23.1.1

# Metal plasticity

Classical metal plasticity 23.2.1

Models for metals subjected to cyclic loading 23.2.2

Rate-dependent yield 23.2.3

Rate-dependent plasticity: creep and swelling 23.2.4

Annealing or melting 23.2.5

Anisotropic yield/creep 23.2.6

Johnson-Cook plasticity 23.2.7

Dynamic failure models 23.2.8

Porous metal plasticity 23.2.9

Cast iron plasticity 23.2.10

Two-layer viscoplasticity 23.2.11

ORNL – Oak Ridge National Laboratory constitutive model 23.2.12

Deformation plasticity 23.2.13

# Other plasticity models

Extended Drucker-Prager models 23.3.1

Modified Drucker-Prager/Cap model 23.3.2

Mohr-Coulomb plasticity 23.3.3

Critical state (clay) plasticity model 23.3.4

Crushable foam plasticity models 23.3.5

# Fabric materials

Fabric material behavior 23.4.1

# Jointed materials

Jointed material model 23.5.1

# Concrete

Concrete smeared cracking 23.6.1

Cracking model for concrete 23.6.2

Concrete damaged plasticity 23.6.3