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LS-DYNA Side Impact Occupant Restraint Simulation

30 Chapters
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01
Side impact crashworthiness fundamentals
regulatory and consumer test protocols, injury metrics, and occupant restraint design objectives.
crashworthinessregulatory
02
LS-DYNA solver environment for crash simulation
explicit time integration, contact algorithms, and material models relevant to side impact.
LS-DYNAenvironment
03
Side impact finite element model assembly
vehicle body, door trim, seat, and occupant compartment meshing strategies.
assemblyoccupant
04
Occupant positioning and dummy models
Hybrid III, ES-2re, SID-IIs, and WorldSID setup in LS-DYNA.
Occupantpositioning
05
Seat belt and airbag modeling
seatbelt elements, slip rings, retractors, pretensioners, and side airbag deployment.
modelingseatbelt
06
Side airbag and curtain airbag simulation
inflator modeling, gas flow, fabric material, and deployment timing.
simulationinflator
07
Door trim and armrest design for occupant protection
energy absorption, padding, and contact interaction.
occupantprotection
08
Side impact barrier and pole test setup
moving deformable barrier, rigid pole, and impact velocity definitions.
deformablevelocity
09
Occupant restraint system integration
belt routing, anchor points, buckle modeling, and load limiter calibration.
Occupantrestraint
10
Contact definition and control in side impact
surface-to-surface, automatic single surface, and friction parameters.
definitionsurface-to-surface
11
Material modeling for side impact structures
high-strength steel, aluminum, plastics, and foams under dynamic loading.
Materialmodeling
12
Strain rate effects and failure criteria
Johnson-Cook, GISSMO, and damage initiation for crash simulations.
criteriaJohnson-Cook
13
Side impact load path analysis
B-pillar, rocker, roof rail, and floor cross-member force transmission.
analysisB-pillar
14
Occupant kinematics and injury criteria
head, chest, abdomen, and pelvis responses in side impact.
Occupantkinematics
15
Airbag folding and deployment simulation
folding techniques, initial metric method, and uniform pressure method.
deploymentsimulation
16
Fluid-structure interaction for side airbag
corpuscular particle method and arbitrary Lagrangian-Eulerian approach.
Fluid-structureinteraction
17
Seat belt pretensioner and load limiter modeling
pyrotechnic and mechanical systems, force-limiting behavior.
pretensionermodeling
18
Side impact model validation
component, sled, and full-scale test correlation using LS-DYNA.
validationcomponent
19
Mesh convergence and hourglass control for side impact simulations
solid, shell, and thick shell elements.
convergencehourglass
20
Simulation run setup and output control
*CONTROL, *DATABASE, and *SET cards for occupant and structural responses.
SimulationCONTROL
21
Post-processing occupant injury metrics
NIC, chest deflection, VC, and pelvis force using LS-PrePost.
Post-processingoccupant
22
Design of experiments for restraint optimization
parameter sensitivity, DOE, and response surface methods.
experimentsrestraint
23
Side impact countermeasures
side airbag, curtain airbag, seat cushion, and door trim optimization.
countermeasuresoptimization
24
Advanced occupant models
THUMS and GHBMC human body models for side impact injury prediction.
Advancedoccupant
25
Electric vehicle side impact challenges
battery pack intrusion, structural integrity, and occupant protection.
Electricchallenges
26
Side impact with far-side occupant
restraint requirements, seat belt geometry, and airbag interaction.
far-sideoccupant
27
Pedestrian and cyclist side impact
vehicle front-end design and LS-DYNA simulation approaches.
Pedestrianfront-end
28
Robustness and reliability in side impact simulation
variability, uncertainty quantification, and stochastic analysis.
Robustnessreliability
29
High-performance computing for LS-DYNA side impact
parallel processing, MPP, and GPU acceleration.
High-performancecomputing
30
Case study
full vehicle side impact simulation with occupant restraint system, validation, and design improvement.
simulationoccupant