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PAB Passenger Airbag Design and CAE Simulation

30 Chapters
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01
PAB system overview
occupant safety functions, regulatory drivers, and integration with the instrument panel and restraint system.
PABoccupant
02
PAB architecture and module layout
cushion, inflator, housing, chute, and cover design for passenger-side deployment.
PABarchitecture
03
Occupant packaging and out-of-position considerations
ATD positioning, seating variation, and interaction with the instrument panel.
Occupantpackaging
04
PAB inflator technologies
pyrotechnic, hybrid, and cold-gas concepts, output characteristics, and selection criteria.
PABinflator
05
Cushion design fundamentals
volume, shape, venting, tethers, and seam layout for passenger restraint performance.
passengerrestraint
06
Cover and chute design
tear seams, hinge behavior, deployment path, and material selection for reliable opening.
behaviordeployment
07
PAB module integration into the IP
mounting strategy, reaction surfaces, gap and flush requirements, and NVH considerations.
PABintegration
08
Deployment kinematics
cushion unfolding, inflation sequence, and interaction with the windshield and IP top surface.
Deploymentkinematics
09
CAE simulation workflow for PAB
CAD preparation, meshing, material models, and solver setup for deployment analysis.
CAEsimulation
10
Inflator modeling in CAE
tank test data, mass flow rate, temperature curves, and gas properties for FSI or uniform pressure methods.
Inflatormodeling
11
Cushion modeling techniques
fabric material models, airbag folding, seam definitions, and venting representation.
modelingtechniques
12
Fluid-structure interaction approaches for PAB
ALE, CEL, corpuscular particle method, and uniform pressure assumptions.
Fluid-structureinteraction
13
Contact and penetration management in PAB simulation
self-contact, IP contact, windshield contact, and occupant contact.
penetrationmanagement
14
Occupant restraint simulation
ATD models, positioning, belt interaction, and injury criteria for passenger-side occupants.
Occupantrestraint
15
Validation and correlation
sled tests, static deployment tests, high-speed video, and pressure measurements for model calibration.
Validationcorrelation
16
Design of experiments for PAB optimization
factors such as vent size, tether length, inflator output, and fold pattern.
experimentsPAB
17
Parametric studies for cushion performance
pressure-time history, occupant kinematics, and injury metric sensitivity.
Parametricperformance
18
Cover opening simulation
stress concentrations, tear seam propagation, and failure modeling for thermoplastic and TPO covers.
simulationconcentrations
19
Thermal and pressure effects
inflator gas temperature, cushion fabric thermal degradation, and pressure rise in confined spaces.
pressureinflator
20
Out-of-position simulation
close-proximity deployment, child seats, and low-risk deployment requirements.
Out-of-positionsimulation
21
Regulatory and rating test simulation
FMVSS 208, ECE R94, US NCAP, and Euro NCAP passenger-side scenarios.
Regulatorysimulation
22
Mesh sensitivity and solution stability
time step, element size, hourglass control, and energy balance checks.
sensitivitysolution
23
Material characterization for PAB CAE
fabric tensile and tear tests, cover material properties, and strain-rate effects.
Materialcharacterization
24
Folding pattern development
flat, rolled, and complex folds, and their influence on deployment trajectory and cushion shape.
developmentinfluence
25
Venting strategies
active vents, passive vents, and adaptive venting for occupant size and crash severity.
strategiesadaptive
26
Integration with vehicle crash model
full-vehicle simulation, body deformation, and PAB interaction with other restraints.
Integrationfull-vehicle
27
Post-processing and result interpretation
occupant injury plots, cushion pressure contours, and deployment animations.
Post-processinginterpretation
28
Robustness and variability
manufacturing tolerances, temperature extremes, and aging effects in simulation.
Robustnessvariability
29
Case study
full PAB development cycle from concept to validation using CAE-driven design iterations.
PABdevelopment
30
Emerging trends
adaptive PAB, pedestrian protection integration, lightweight materials, and advanced simulation methods.
Emergingadaptive