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Reduced-Order Structural Models for Large CAE Assemblies

30 Chapters
View Course Samples Online
01
Course overview
scope, motivation, and technical context for reduced-order modeling of large CAE assemblies.
motivationtechnical
02
Full-order assembly models
substructuring, superelements, and interface degrees of freedom in large-scale CAE.
Full-orderassembly
03
Modal reduction fundamentals
Craig-Bampton, Hurty, and MacNeal methods for component mode synthesis.
reductionCraig-Bampton
04
Interface reduction techniques
characteristic constraint modes, dual Craig-Bampton, and interface enrichment.
Interfacereduction
05
Static condensation and Guyan reduction
applicability, accuracy limits, and practical implementation in assembly models.
condensationreduction
06
Component mode synthesis for industrial assemblies
partitioning strategy, boundary conditions, and mode selection.
Componentsynthesis
07
Model order reduction via Krylov subspaces
moment matching, Arnoldi, and Lanczos for structural dynamics.
reductionsubspaces
08
Balanced truncation and singular perturbation for structural systems
Gramians, Hankel singular values, and stability.
Balancedtruncation
09
Proper orthogonal decomposition and modal basis construction from simulation or test data.
Proper orthogonal decomposition and modal basis construction from simulation or test data.
orthogonaldecomposition
10
Dynamic substructuring
frequency-based, time-domain, and hybrid assembly coupling methods.
substructuringfrequency-based
11
Reduction of assemblies with nonlinear connections
contact, joints, and local plasticity.
Reductionassemblies
12
Parametric reduced-order models
interpolation, projection-based approaches, and parametric Craig-Bampton.
Parametricreduced-order
13
Error estimation and convergence criteria for reduced-order assembly models.
Error estimation and convergence criteria for reduced-order assembly models.
estimationconvergence
14
Coupling reduced-order models with full-order subsystems
hybrid and adaptive substructuring.
Couplingreduced-order
15
Software implementation
reduced-order model generation in commercial CAE solvers (Nastran, Abaqus, Ansys).
Softwareimplementation
16
Reduced-order models for modal frequency response and random vibration of large assemblies.
Reduced-order models for modal frequency response and random vibration of large assemblies.
Reduced-orderfrequency
17
Transient dynamic analysis using reduced-order models
time integration and stability considerations.
Transientanalysis
18
Reduced-order modeling for acoustic and vibro-acoustic assemblies.
Reduced-order modeling for acoustic and vibro-acoustic assemblies.
Reduced-ordermodeling
19
Thermal-structural reduced-order models for coupled-field assembly analysis.
Thermal-structural reduced-order models for coupled-field assembly analysis.
Thermal-structuralreduced-order
20
Model reduction for rotating machinery and gyroscopic assemblies.
Model reduction for rotating machinery and gyroscopic assemblies.
reductionrotating
21
Reduced-order models in optimization and design space exploration of assemblies.
Reduced-order models in optimization and design space exploration of assemblies.
Reduced-orderoptimization
22
Real-time and hardware-in-the-loop applications of reduced-order assembly models.
Real-time and hardware-in-the-loop applications of reduced-order assembly models.
Real-timehardware-in-the-loop
23
Digital twin and structural health monitoring using reduced-order assembly models.
Digital twin and structural health monitoring using reduced-order assembly models.
structuralmonitoring
24
Uncertainty quantification with reduced-order models
stochastic substructuring and polynomial chaos.
Uncertaintyquantification
25
Verification and validation of reduced-order assembly models against full-order simulations and test data.
Verification and validation of reduced-order assembly models against full-order simulations and test data.
Verificationvalidation
26
Case study
automotive body-in-white reduced-order model for NVH analysis.
automotivebody-in-white
27
Case study
aerospace wing-box assembly reduction for flutter and gust response.
aerospacewing-box
28
Case study
wind turbine drivetrain assembly reduction for load and fatigue assessment.
drivetrainassembly
29
Case study
ship hull and offshore structure assembly reduction for wave loading.
offshorestructure
30
Emerging trends
machine learning-assisted reduction, adaptive substructuring, and exascale CAE workflows.
Emerginglearning-assisted