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MADYMO Passenger Restraint Design and Simulation

30 Chapters
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01
MADYMO in passenger restraint engineering
overview of the solver, multibody and FE coupling, and typical OEM restraint development workflows.
MADYMOpassenger
02
Restraint system architecture
seat belts, pretensioners, load limiters, airbags, and occupant packaging constraints in MADYMO models.
Restraintarchitecture
03
MADYMO model setup for occupant safety
system definition, units, coordinate systems, and input deck organization.
MADYMOoccupant
04
Multibody occupant modeling
ellipsoids, joints, contact definitions, and kinematic chains for restrained occupants.
Multibodyoccupant
05
Finite element occupant and restraint modeling
shell and solid meshes for airbags, belts, seats, and interior trim.
occupantrestraint
06
Material and constitutive models for restraints
belt webbing, airbag fabric, foam, and plastic trim under impact loading.
Materialconstitutive
07
Belt modeling techniques
slip rings, retractors, pretensioner triggers, load limiter curves, and belt-to-occupant contact.
modelingtechniques
08
Airbag modeling in MADYMO
uniform pressure, Eulerian, ALE, and corpuscular gas flow approaches for frontal and side airbags.
modelingMADYMO
09
Occupant positioning and posture
H-point, seating configuration, and pre-crash occupant states for restraint design.
Occupantpositioning
10
Contact and coupling strategies
occupant-to-restraint, restraint-to-interior, and self-contact in multibody and FE domains.
couplingstrategies
11
Load case definition
frontal, oblique, side, rear, and rollover scenarios with regulatory and consumer test pulses.
definitionrollover
12
Sled test setup and correlation
acceleration pulses, boundary conditions, and matching MADYMO to physical sled results.
correlationacceleration
13
Frontal impact restraint design
driver and passenger airbag sizing, belt geometry, and load limiter tuning for HIC and chest deflection.
restraintpassenger
14
Side impact restraint design
side airbag, curtain airbag, and seat-mounted thorax bag modeling for pole and MDB tests.
restraintseat-mounted
15
Out-of-position (OOP) occupant simulation
airbag deployment interaction with occupants near the module.
Out-of-positionOOP
16
Child restraint system (CRS) modeling
ISOFIX, belt routing, and CRS-to-vehicle interface in MADYMO.
restraintCRS
17
Rear seat and second-row restraint
belt geometry, inflatable belts, and occupant protection challenges.
second-rowrestraint
18
Pedestrian and two-wheeler protection
MADYMO legform, upper legform, and head impactor models for restraint-adjacent design.
Pedestriantwo-wheeler
19
Restraint optimization
DOE, response surface methods, and multi-objective trade-offs for injury criteria.
Restraintoptimization
20
Injury criteria and biomechanical targets
HIC, Nij, chest deflection, femur force, and their calculation in MADYMO.
criteriabiomechanical
21
Airbag inflator modeling
tank curves, mass flow, temperature effects, and inflator-to-airbag coupling.
inflatormodeling
22
Belt pretensioner and retractor modeling
pyrotechnic and mechanical actuation, timing, and force-limiting behavior.
pretensionerretractor
23
Seat and interior interaction
seatback stiffness, head restraint, knee bolster, and floor console effects on restraint performance.
interiorinteraction
24
Simulation robustness
time step, contact stiffness, hourglass control, and convergence for restraint models.
Simulationrobustness
25
Validation and correlation
test data acquisition, signal processing, objective rating, and model updating for restraints.
Validationcorrelation
26
Advanced restraint concepts
adaptive restraints, reversible pretensioners, and integrated safety systems in MADYMO.
Advancedrestraint
27
MADYMO scripting and automation
Python API, parametric studies, batch runs, and post-processing workflows.
MADYMOscripting
28
Coupling MADYMO with other solvers
co-simulation with LS-DYNA, vehicle crash models, and pre-crash sensing data.
CouplingMADYMO
29
Regulatory and consumer testing
FMVSS, ECE, Euro NCAP, and C-NCAP restraint requirements and their simulation implications.
Regulatoryconsumer
30
Capstone restraint design project
end-to-end MADYMO model build, load case matrix, optimization, and validation reporting.
Capstonerestraint