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PAM-CRASH Airbag Modeling and Crash Validation

30 Chapters
View Course Samples Online
01
Airbag system fundamentals for PAM-CRASH
occupant protection principles, bag types, inflator architectures, and regulatory drivers.
PAM-CRASHoccupant
02
PAM-CRASH solver environment setup
licensing, solver invocation, input deck organization, and output control for airbag simulations.
PAM-CRASHenvironment
03
Airbag geometry creation and meshing
2D pattern development, folding strategies, and shell element quality criteria in PAM-CRASH.
geometrycreation
04
Material modeling for airbag fabrics
linear elastic, orthotropic, and viscoelastic constitutive laws with permeability and strain-rate effects.
Materialmodeling
05
Inflator modeling approaches
tank test characterization, mass flow rate curves, temperature dependencies, and gas mixture definitions.
Inflatormodeling
06
Uniform pressure and control volume methods
AIRBAG1 and AIRBAG2 keyword usage, leakage modeling, and pressure-volume coupling.
pressureAIRBAG1
07
Arbitrary Lagrangian-Eulerian (ALE) and corpuscular particle method (CPM) for airbag deployment
gas dynamics, jetting, and fluid-structure interaction.
ArbitraryLagrangian-Eulerian
08
Contact and interaction definitions
airbag-to-occupant, airbag-to-steering wheel, airbag-to-windshield, and self-contact with friction.
interactiondefinitions
09
Folding and packaging techniques in PAM-CRASH
geometric folding, initial metric method, and stress initialization for stowed configurations.
packagingtechniques
10
Occupant positioning and dummy models
Hybrid III, THOR, and human body models, positioning, and belt interaction for out-of-position scenarios.
Occupantpositioning
11
Frontal impact airbag validation
driver and passenger airbag deployment, head and chest injury criteria, and correlation with sled tests.
validationpassenger
12
Side impact airbag modeling
side curtain, thorax, and pelvis airbags, door trim interaction, and pole and barrier test setups.
modelinginteraction
13
Curtain airbag deployment and validation
roof rail mounting, coverage area, deployment timing, and ejection mitigation per FMVSS 226.
deploymentvalidation
14
Knee airbag and pedestrian protection airbag modeling
lower extremity interaction, bumper and hood deployment, and pedestrian impactor validation.
pedestrianprotection
15
Out-of-position (OOP) airbag simulations
static and dynamic OOP tests, close-proximity deployment, and injury risk assessment per FMVSS 208.
Out-of-positionOOP
16
Airbag inflator variability and robustness studies
statistical variation, design of experiments, and sensitivity analysis in PAM-CRASH.
inflatorvariability
17
Gas dynamics and thermal effects in airbag deployment
temperature-dependent pressure, heat transfer, and venting behavior.
dynamicsdeployment
18
Airbag fabric permeability and leakage modeling
experimental characterization, porous media models, and validation against tank tests.
permeabilitymodeling
19
Seam and tether modeling
stitch definitions, failure criteria, and their influence on bag shape and deployment kinematics.
modelingdefinitions
20
Airbag module and housing interaction
cover opening, hinge behavior, and module retention under deployment loads.
interactionbehavior
21
Restraint system coupling
airbag with seat belts, pretensioners, load limiters, and seat structures in integrated crash simulations.
Restraintcoupling
22
Validation metrics and correlation techniques
objective rating methods, corridor analysis, and signal processing for airbag responses.
Validationcorrelation
23
High-speed and low-speed deployment validation
deployment timing, bag inflation profile, and occupant loading under different crash pulses.
High-speedlow-speed
24
Airbag simulation for electric and autonomous vehicles
interior layout changes, new seating positions, and alternative restraint strategies.
simulationelectric
25
Advanced material models for airbag fabrics
anisotropic hyperelasticity, damage, and failure modeling for high strain rates.
Advancedmaterial
26
Fluid-structure interaction (FSI) advanced techniques
coupled ALE and CPM with shell structures, and adaptive meshing strategies.
Fluid-structureinteraction
27
Airbag simulation workflow automation
scripting, parametric studies, and integration with optimization tools in PAM-CRASH.
simulationworkflow
28
Verification and validation (V&V) for airbag models
mesh convergence, time step sensitivity, and comparison with physical tests.
Verificationvalidation
29
Regulatory and consumer test protocols
FMVSS 208, FMVSS 226, Euro NCAP, and China NCAP requirements for airbag validation.
Regulatoryconsumer
30
Case study
full vehicle frontal crash with airbag deployment, occupant injury assessment, and correlation with physical test results.
deploymentoccupant