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LS-DYNA Verification Validation and Occupant Optimization Capstones

30 Chapters
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01
Capstone framing
LS-DYNA verification and validation (V&V) principles, occupant safety optimization objectives, and project scoping for coupled V&V and optimization workflows.
CapstoneLS-DYNA
02
Model verification fundamentals
code verification via analytical benchmarks, order-of-accuracy studies, and unit-level checks for LS-DYNA material and contact formulations.
verificationanalytical
03
Solution verification in crashworthiness
mesh convergence, time-step sensitivity, energy balance audits, and hourglass control assessment for occupant safety models.
Solutionverification
04
Validation experiment design
occupant sled and full-scale crash test data requirements, instrumentation, filtering per SAE J211, and correlation metrics for LS-DYNA predictions.
Validationexperiment
05
Material model calibration and validation
tension, compression, and strain-rate characterization for occupant-relevant materials (foams, polymers, metals) using LS-DYNA MAT models.
Materialcalibration
06
Occupant restraint system modeling
seatbelt routing, retractor and pretensioner definitions, airbag folding and deployment, and contact interactions in LS-DYNA.
Occupantrestraint
07
Dummy model verification and validation
finite element dummy positioning, joint stiffness checks, and biofidelity correlation against calibration test data.
verificationvalidation
08
Frontal impact validation capstone
full vehicle or sled model correlation to test data, including intrusion, pulse, and occupant kinematics matching.
validationcapstone
09
Side impact validation capstone
door trim, side airbag, and pole impact model validation with occupant injury criteria correlation.
validationcapstone
10
Rear impact and whiplash validation
seat structure, head restraint, and BioRID dummy model validation for neck injury criteria.
whiplashvalidation
11
Pedestrian protection validation
legform, headform, and upper legform impactor models in LS-DYNA and correlation to EEVC/UN R127 test data.
Pedestrianprotection
12
Occupant injury criteria computation
HIC, chest deflection, Nij, and femur force extraction from LS-DYNA simulations with post-processing automation.
Occupantcriteria
13
Design of experiments (DOE) for occupant safety
parameter screening, Latin hypercube sampling, and metamodel building using LS-DYNA runs.
experimentsDOE
14
Surrogate modeling and optimization setup
response surface methods, Kriging, and LS-OPT integration for restraint system design.
Surrogatemodeling
15
Restraint system optimization capstone
belt force limiter, airbag venting, and seat parameters tuned for injury criteria minimization under constraints.
Restraintoptimization
16
Occupant packaging and ergonomics optimization
pedal, steering wheel, and seat position variables to balance comfort and safety in LS-DYNA.
Occupantpackaging
17
Robustness and reliability assessment
variability in material properties, friction, and deployment timing using stochastic LS-DYNA simulations.
Robustnessreliability
18
Multi-objective optimization for occupant safety
Pareto front generation, trade-off analysis between injury metrics and cost/weight using LS-OPT.
Multi-objectiveoptimization
19
Verification of optimization results
cross-validation of metamodels, confirmation runs in LS-DYNA, and sensitivity analysis of optimal designs.
Verificationoptimization
20
Validation of optimized restraint systems
sled or vehicle test correlation for the optimized design and assessment of predictive accuracy.
Validationoptimized
21
Occupant model validation for out-of-position (OOP) scenarios
airbag interaction, dummy positioning, and injury risk assessment in LS-DYNA.
Occupantvalidation
22
Child occupant safety validation
CRS modeling, ISOFIX attachment, and Q-dummy correlation for frontal and side impacts.
occupantvalidation
23
Advanced restraint systems
adaptive load limiters, inflatable seatbelts, and their V&V challenges in LS-DYNA simulations.
Advancedrestraint
24
Battery electric vehicle occupant safety
floor intrusion, battery pack interaction, and occupant protection validation in LS-DYNA.
electricoccupant
25
Autonomous vehicle interior optimization
reclined seating, alternative restraint configurations, and occupant safety V&V for future interiors.
Autonomousinterior
26
Integration of V&V and optimization workflows
automated CAE pipelines, data management, and traceability from test to optimized design.
Integrationoptimization
27
Capstone project I
frontal impact restraint system V&V and optimization—from test data correlation to injury criteria reduction.
Capstonerestraint
28
Capstone project II
side impact occupant protection—model validation, DOE, and multi-objective optimization of door trim and airbag.
Capstoneoccupant
29
Capstone project III
pedestrian protection and OOP occupant safety—combined V&V and optimization for complex loading scenarios.
CapstoneIII
30
Capstone synthesis
best practices, documentation standards, and future trends in LS-DYNA V&V and occupant safety optimization.
Capstonesynthesis