김경종
249 lines
9.4 KiB
Markdown
249 lines
9.4 KiB
Markdown
<!-- source-page: 31 -->
|
|
|
|
Contact modeling if substructures are present 37.3.9
|
|
|
|
Contact modeling if asymmetric-axisymmetric elements are present 37.3.10
|
|
|
|
# Defining general contact in Abaqus/Explicit
|
|
|
|
Defining general contact interactions in Abaqus/Explicit 37.4.1
|
|
|
|
Assigning surface properties for general contact in Abaqus/Explicit 37.4.2
|
|
|
|
Assigning contact properties for general contact in Abaqus/Explicit 37.4.3
|
|
|
|
Controlling initial contact status for general contact in Abaqus/Explicit 37.4.4
|
|
|
|
Contact controls for general contact in Abaqus/Explicit 37.4.5
|
|
|
|
# Defining contact pairs in Abaqus/Explicit
|
|
|
|
Defining contact pairs in Abaqus/Explicit 37.5.1
|
|
|
|
Assigning surface properties for contact pairs in Abaqus/Explicit 37.5.2
|
|
|
|
Assigning contact properties for contact pairs in Abaqus/Explicit 37.5.3
|
|
|
|
Adjusting initial surface positions and specifying initial clearances for contact pairs in Abaqus/Explicit 37.5.4
|
|
|
|
Contact controls for contact pairs in Abaqus/Explicit 37.5.5
|
|
|
|
# 38. Contact Property Models
|
|
|
|
# Mechanical contact properties
|
|
|
|
Mechanical contact properties: overview 38.1.1
|
|
|
|
Contact pressure-overclosure relationships 38.1.2
|
|
|
|
Contact damping 38.1.3
|
|
|
|
Contact blockage 38.1.4
|
|
|
|
Frictional behavior 38.1.5
|
|
|
|
User-defined interfacial constitutive behavior 38.1.6
|
|
|
|
Pressure penetration loading 38.1.7
|
|
|
|
Interaction of debonded surfaces 38.1.8
|
|
|
|
Breakable bonds 38.1.9
|
|
|
|
Surface-based cohesive behavior 38.1.10
|
|
|
|
# Thermal contact properties
|
|
|
|
Thermal contact properties 38.2.1
|
|
|
|
# Electrical contact properties
|
|
|
|
Electrical contact properties 38.3.1
|
|
|
|
# Pore fluid contact properties
|
|
|
|
Pore fluid contact properties 38.4.1
|
|
|
|
# 39. Contact Formulations and Numerical Methods
|
|
|
|
# Contact formulations and numerical methods in Abaqus/Standard
|
|
|
|
Contact formulations in Abaqus/Standard 39.1.1
|
|
|
|
<!-- source-page: 32 -->
|
|
|
|
Contact constraint enforcement methods in Abaqus/Standard 39.1.2
|
|
|
|
Smoothing contact surfaces in Abaqus/Standard 39.1.3
|
|
|
|
# Contact formulations and numerical methods in Abaqus/Explicit
|
|
|
|
Contact formulation for general contact in Abaqus/Explicit 39.2.1
|
|
|
|
Contact formulations for contact pairs in Abaqus/Explicit 39.2.2
|
|
|
|
Contact constraint enforcement methods in Abaqus/Explicit 39.2.3
|
|
|
|
# 40. Contact Difficulties and Diagnostics
|
|
|
|
# Resolving contact difficulties in Abaqus/Standard
|
|
|
|
Contact diagnostics in an Abaqus/Standard analysis 40.1.1
|
|
|
|
Common difficulties associated with contact modeling in Abaqus/Standard 40.1.2
|
|
|
|
# Resolving contact difficulties in Abaqus/Explicit
|
|
|
|
Contact diagnostics in an Abaqus/Explicit analysis 40.2.1
|
|
|
|
Common difficulties associated with contact modeling using contact pairs in Abaqus/Explicit 40.2.2
|
|
|
|
# 41. Contact Elements in Abaqus/Standard
|
|
|
|
# Contact modeling with elements
|
|
|
|
Contact modeling with elements 41.1.1
|
|
|
|
# Gap contact elements
|
|
|
|
Gap contact elements 41.2.1
|
|
|
|
Gap element library 41.2.2
|
|
|
|
# Tube-to-tube contact elements
|
|
|
|
Tube-to-tube contact elements 41.3.1
|
|
|
|
Tube-to-tube contact element library 41.3.2
|
|
|
|
# Slide line contact elements
|
|
|
|
Slide line contact elements 41.4.1
|
|
|
|
Axisymmetric slide line element library 41.4.2
|
|
|
|
# Rigid surface contact elements
|
|
|
|
Rigid surface contact elements 41.5.1
|
|
|
|
Axisymmetric rigid surface contact element library 41.5.2
|
|
|
|
# 42. Defining Cavity Radiation in Abaqus/Standard
|
|
|
|
# Defining cavity radiation
|
|
|
|
Cavity radiation 42.1.1
|
|
|
|
<!-- source-page: 33 -->
|
|
|
|
# Part III: Analysis Procedures, Solution, and Control
|
|
|
|
• Chapter 6, “Analysis Procedures”
|
|
• Chapter 7, “Analysis Solution and Control”
|
|
|
|
<!-- source-page: 34 -->
|
|
|
|
<!-- source-page: 35 -->
|
|
|
|
# 6. Analysis Procedures
|
|
|
|
Introduction 6.1
|
|
|
|
Static stress/displacement analysis 6.2
|
|
|
|
Dynamic stress/displacement analysis 6.3
|
|
|
|
Steady-state transport analysis 6.4
|
|
|
|
Heat transfer and thermal-stress analysis 6.5
|
|
|
|
Fluid dynamic analysis 6.6
|
|
|
|
Electromagnetic analysis 6.7
|
|
|
|
Coupled pore fluid flow and stress analysis 6.8
|
|
|
|
Mass diffusion analysis 6.9
|
|
|
|
Acoustic and shock analysis 6.10
|
|
|
|
Abaqus/Aqua analysis 6.11
|
|
|
|
Annealing 6.12
|
|
|
|
<!-- source-page: 36 -->
|
|
|
|
<!-- source-page: 37 -->
|
|
|
|
# 6.1 Introduction
|
|
|
|
• “Solving analysis problems: overview,” Section 6.1.1
|
|
• “Defining an analysis,” Section 6.1.2
|
|
• “General and linear perturbation procedures,” Section 6.1.3
|
|
• “Multiple load case analysis,” Section 6.1.4
|
|
• “Direct linear equation solver,” Section 6.1.5
|
|
• “Iterative linear equation solver,” Section 6.1.6
|
|
|
|
<!-- source-page: 38 -->
|
|
|
|
<!-- source-page: 39 -->
|
|
|
|
# 6.1.1 SOLVING ANALYSIS PROBLEMS: OVERVIEW
|
|
|
|
# Overview
|
|
|
|
A large class of stress analysis problems can be solved with Abaqus/Standard and Abaqus/Explicit. A fundamental division of such problems is into static or dynamic response; dynamic problems are those in which inertia effects are significant. Abaqus/CFD solves a broad range of incompressible flow problems.
|
|
|
|
An analysis problem history is defined using steps in Abaqus (“Defining an analysis,” Section 6.1.2). For each step you choose an analysis procedure, which defines the type of analysis to be performed during the step. The available analysis procedures are listed below and described in more detail in the referenced sections.
|
|
|
|
Abaqus provides multiphysics capabilities using built-in fully coupled procedures, sequential coupling, and co-simulation as solution techniques for multiphysics simulation. An extensive selection of additional analysis techniques that provide powerful tools for performing your Abaqus analyses more efficiently and effectively is available; see Part IV, “Analysis Techniques.”
|
|
|
|
# Abaqus/Standard analysis
|
|
|
|
Abaqus/Standard offers complete flexibility in making the distinction between static and dynamic response; the same analysis can contain several static and dynamic phases. Thus, a static preload might be applied, and then the linear or nonlinear dynamic response computed (as in the case of vibrations of a component of a rotating machine or the response of a flexible offshore system that is initially moved to an equilibrium position subject to buoyancy and steady current loads and then is excited by wave loading). Similarly, the static solution can be sought after a dynamic event (by following a dynamic analysis step with a step of static loading). See “Static stress/displacement analysis,” Section 6.2, and “Dynamic stress/displacement analysis,” Section 6.3, for information on these types of procedures. In addition to static and dynamic stress analysis, Abaqus/Standard offers the following analysis types:
|
|
|
|
• “Steady-state transport analysis,” Section 6.4
|
|
• “Heat transfer and thermal-stress analysis,” Section 6.5
|
|
• “Electromagnetic analysis,” Section 6.7
|
|
• “Coupled pore fluid flow and stress analysis,” Section 6.8
|
|
• “Mass diffusion analysis,” Section 6.9
|
|
• “Acoustic and shock analysis,” Section 6.10
|
|
• “Abaqus/Aqua analysis,” Section 6.11
|
|
|
|
# Abaqus/Explicit analysis
|
|
|
|
Abaqus/Explicit solves dynamic response problems using an explicit direct-integration procedure. See “Dynamic stress/displacement analysis,” Section 6.3, for more information on the explicit dynamic procedures available in Abaqus. Abaqus/Explicit also provides heat transfer, acoustic, and annealing analysis capabilities: see “Heat transfer and thermal-stress analysis,” Section 6.5; “Acoustic and shock analysis,” Section 6.10; and “Annealing,” Section 6.12, for details.
|
|
|
|
<!-- source-page: 40 -->
|
|
|
|
# Abaqus/CFD analysis
|
|
|
|
Abaqus/CFD solves a broad range of incompressible flow problems using a second-order projection method. See “Fluid dynamic analysis,” Section 6.6, for details on the incompressible flow procedures available in Abaqus.
|
|
|
|
# Multiphysics analyses
|
|
|
|
Multiphysics is a coupled approach in the numerical solution of multiple interacting physical domains. Abaqus provides built-in fully coupled procedures, sequential coupling, and co-simulation as solution techniques for multiphysics simulation.
|
|
|
|
# Built-in fully coupled procedures
|
|
|
|
Native Abaqus multiphysics capabilities solve the physics by adding degrees of freedom representing each of the physical fields and using a single solver. Abaqus provides the following built-in fully coupled procedures to solve multidisciplinary simulations, where all physics fields are computed by Abaqus:
|
|
|
|
• “Fully coupled thermal-stress analysis,” Section 6.5.3
|
|
• “Coupled thermal-electrical analysis,” Section 6.7.3
|
|
• “Fully coupled thermal-electrical-structural analysis,” Section 6.7.4
|
|
• “Piezoelectric analysis,” Section 6.7.2 (electrical and mechanical coupling)
|
|
• “Eddy current analysis,” Section 6.7.5 (electromagnetic)
|
|
• “Coupled pore fluid diffusion and stress analysis,” Section 6.8.1
|
|
• “Acoustic, shock, and coupled acoustic-structural analysis,” Section 6.10.1
|
|
• “Eulerian analysis,” Section 14.1.1
|
|
|
|
# Sequential coupling
|
|
|
|
A sequentially coupled multiphysics analysis can be used when the coupling between one or more of the physical fields in a model is only important in one direction. A common example is a thermal-stress analysis in which the temperature field does not depend strongly on the stress field. A typical sequentially coupled thermal-stress analysis consists of two Abaqus/Standard runs: a heat transfer analysis and a subsequent stress analysis.
|
|
|
|
You can perform sequentially coupled multiphysics analyses in Abaqus/Standard as described in the following sections:
|
|
|
|
• “Predefined fields for sequential coupling,” Section 16.1.1
|
|
• “Sequentially coupled thermal-stress analysis,” Section 16.1.2
|
|
• “Predefined loads for sequential coupling,” Section 16.1.3
|