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SAB Side Airbag Design and CAE Simulation

30 Chapters
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01
SAB system overview
side impact protection principles, regulatory and consumer test requirements, and the role of CAE in airbag design.
SABprotection
02
Side airbag types and architectures
thorax, pelvis, combo, curtain airbags, and seat-integrated versus door-mounted configurations.
architecturesseat-integrated
03
Occupant injury criteria for side impact
rib fracture, chest deflection, abdominal and pelvic injury metrics, and their CAE correlation targets.
Occupantcriteria
04
SAB design inputs
vehicle package constraints, seat structure, trim interfaces, and occupant packaging data for CAE model setup.
SABconstraints
05
Airbag cushion geometry and folding patterns
flat pattern development, fold types, and their influence on deployment kinematics.
geometrypatterns
06
Inflator selection and modeling
pyrotechnic, hybrid, and cold-gas inflators, mass flow rate curves, and CAE representation.
Inflatorselection
07
Fabric material modeling
coated and uncoated fabrics, orthotropic behavior, permeability, and constitutive models for CAE.
materialmodeling
08
CAE mesh generation for SAB
shell versus solid elements, mesh density, and quality criteria for reliable simulation.
CAEgeneration
09
Airbag deployment simulation methods
uniform pressure, control volume, and corpuscular particle methods in explicit solvers.
deploymentsimulation
10
Fluid-structure interaction in SAB CAE
gas dynamics, chamber modeling, and coupling with fabric deformation.
Fluid-structureinteraction
11
Contact and penetration modeling
self-contact, occupant contact, and trim interaction definitions in side airbag CAE.
penetrationmodeling
12
Seat and trim modeling for SAB simulation
material properties, failure criteria, and interaction with deploying cushion.
modelingSAB
13
Occupant positioning and dummy models
WorldSID, EuroSID, and SID-IIs setup, positioning, and boundary conditions.
Occupantpositioning
14
Side impact load cases
barrier tests, pole tests, and interior impact scenarios for CAE validation.
interiorscenarios
15
SAB CAE model assembly
subsystem integration, boundary conditions, initial conditions, and solver settings.
SABCAE
16
Simulation run management
time step control, mass scaling, energy balance, and stability checks for SAB models.
Simulationmanagement
17
Post-processing and result interpretation
pressure, stress, strain, and kinematic outputs for design evaluation.
Post-processinginterpretation
18
Correlation of SAB CAE with physical tests
sled and vehicle test data, signal processing, and model updating.
CorrelationSAB
19
Design optimization of SAB
parametric studies on vent size, tether placement, and cushion volume using CAE.
optimizationSAB
20
Vent and tether design
pressure management, deployment control, and CAE-driven trade-off studies.
pressuremanagement
21
Occupant out-of-position (OOP) simulation
low-risk deployment requirements and CAE methods for OOP assessment.
Occupantout-of-position
22
SAB interaction with other safety systems
seat belts, pretensioners, and curtain airbags in integrated CAE models.
SABinteraction
23
Thermal and gas flow effects
inflator gas temperature, fabric thermal degradation, and their CAE treatment.
inflatortemperature
24
Advanced material models for SAB
strain-rate effects, failure modeling, and validation against coupon tests.
Advancedmaterial
25
Robustness and variability in SAB CAE
manufacturing tolerances, material scatter, and stochastic simulation approaches.
Robustnessvariability
26
CAE workflow automation for SAB
scripting, parametric model generation, and batch processing for design iterations.
CAEworkflow
27
Validation and verification of SAB CAE models
V&V guidelines, mesh convergence, and uncertainty quantification.
Validationverification
28
Case study
door-mounted thorax airbag CAE model development and correlation with pole test results.
door-mountedCAE
29
Case study
seat-integrated combo airbag simulation for side impact and OOP scenarios.
seat-integratedsimulation
30
Future trends in SAB design and CAE
lightweight materials, adaptive airbags, and machine learning in simulation.
SABCAE