Topology and Shape Optimization with Abaqus

41 Pages·2011·3.78 MB·English

Topology and Shape Optimization with Abaqus
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Overview
Introduction / Overview / Positioning
 What optimization is
 What ATOM does
 Where ATOM fits in
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,2 ATOM Workflow
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Results Postprocessing
ATOM Examples
ATOM Summary and Benefits
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Introduction
Abaqus Topology Optimization Module (ATOM) is a new
product, launched with the release of Abaqus 6.11.
Product features:
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 Large deformation
 Contact
 Non-linear materials
 Manufacturing restrictions
 Export results to CAD
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Topology Optimization
“Topology optimization is a phrase used to characterize design optimization
formulations that allow for the prediction of the lay-out of a structural and
mechanical system. That is, the topology or „landscape‟ of the structure is an
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,21 outcome of the procedure.” - Martin P. Bendsøe and Ole Sigmund
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Shape Optimization
Shape optimization refers to procedures that result in the prediction of a boundary (or
shape) of the design domain of the structural/mechanical system to be optimized.
 How does ATOM achieve this?
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1 o In a finite element analysis, nodes on the boundary are displaced in order to achieve an
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SIMULIA’s Design Exploration and Optimization Tools
Six Sigma
Test Data
1 ATOM Match Taguchi RD
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seΙ ATOM Shape optimization Isight
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tsyS Tuned for topology and shape optimization A general purpose design exploration and optimization
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Not feature based or non parametric Feature based or Parametric
Can handle a very large number of design variables. Meant for small number of design variables(~10-100)
(~100K-1000K)
Single objective optimization Multi-objective, multi-discipline optimizations possible
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ATOM Workflow
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,21 What optimization is
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otcO What ATOM does
,M Where ATOM fits in
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n ATOM Workflow
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ciM ATOM integration in Abaqus/CAE
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seΙ Design Responses
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tsyS Objective functions
tlu Constraints
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Execution and Monitoring
Results Postprocessing
ATOM Examples
ATOM Summary and Benefits
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ATOM Lifecycle
Start with CAD
assembly
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assa ATOM
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ATOM
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Solver Iterations
Specify problem Iterative process
 Each Abaqus job can be parallel
Write .inp file
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reb Modify .inp file
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semΙ Postprocess ATOM
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Proposal?
Afterwards, export to CAD in
INP or STL format
Visualize Smooth output
Export to CAD
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ATOM Workflow: Optimization Setup
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Each user action is associated with a
manager in the Optimization module
accessible from the Optimization Module
Toolbox or the Model Tree
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