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MADYMO Restraint System Design and Optimization

30 Chapters
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01
Introduction to MADYMO for restraint system engineering
overview of the solver, multibody and FE capabilities, and typical occupant safety workflows.
MADYMOrestraint
02
Restraint system fundamentals in MADYMO
seat belts, airbags, pretensioners, load limiters, and their modeling representations.
RestraintMADYMO
03
MADYMO model setup for restraint analysis
input deck structure, units, coordinate systems, and key control parameters.
MADYMOrestraint
04
Occupant model selection and positioning
Hybrid III, THOR, human body models, and seating posture definition in MADYMO.
Occupantselection
05
Seat belt modeling in MADYMO
belt routing, sliprings, retractors, pretensioners, and load limiters with practical examples.
modelingMADYMO
06
Airbag modeling in MADYMO
uniform pressure, CV, and FPM approaches, folding strategies, and venting characteristics.
modelingMADYMO
07
Contact and coupling definitions for restraints
belt-to-occupant, airbag-to-occupant, and occupant-to-interior interactions.
couplingdefinitions
08
Frontal impact restraint design
driver and passenger airbag sizing, belt force limiting, and pretensioner timing for FMVSS 208 and Euro NCAP.
restraintpassenger
09
Side impact restraint design
side airbags, curtain airbags, and thorax/pelvis airbag modeling for FMVSS 214 and Euro NCAP side pole.
restraintthorax/pelvis
10
Rear impact and whiplash restraint considerations
seat design, head restraints, and MADYMO modeling for low-speed rear impacts.
whiplashrestraint
11
Out-of-position (OOP) occupant analysis
airbag deployment interactions, static and dynamic OOP tests, and MADYMO simulation setup.
Out-of-positionOOP
12
Restraint system parameterization
design variables, ranges, and constraints for belt, airbag, and seat parameters.
Restraintparameterization
13
Design of Experiments (DOE) for restraint optimization
full factorial, Latin hypercube, and optimal sampling in MADYMO workflows.
ExperimentsDOE
14
Surrogate modeling and response surface methods
polynomial regression, Kriging, and radial basis functions for restraint responses.
Surrogatemodeling
15
Optimization algorithms in restraint design
gradient-based, genetic algorithms, and multi-objective optimization using MADYMO results.
Optimizationalgorithms
16
Robustness and reliability-based design
accounting for manufacturing tolerances, occupant variability, and impact conditions.
Robustnessreliability-based
17
Injury criteria and restraint performance metrics
HIC, chest deflection, Nij, femur force, and their calculation from MADYMO outputs.
criteriarestraint
18
Regulatory and consumer test protocols
FMVSS 208, FMVSS 214, Euro NCAP, and C-NCAP restraint requirements and simulation correlation.
Regulatoryconsumer
19
Model validation and correlation
sled test and full vehicle test data, objective rating methods, and MADYMO model updating.
validationcorrelation
20
Restraint system optimization case study
frontal driver airbag and belt optimization for HIC and chest deflection reduction.
Restraintoptimization
21
Restraint system optimization case study
side impact airbag and curtain airbag optimization for head and thorax protection.
Restraintoptimization
22
Integrated safety and restraint interaction
pre-crash sensing, reversible restraints, and MADYMO co-simulation approaches.
Integratedrestraint
23
Child restraint systems (CRS) in MADYMO
CRS modeling, ISOFIX/LATCH, and occupant protection for pediatric occupants.
restraintCRS
24
Advanced restraint technologies
adaptive load limiters, multi-chamber airbags, and active seat belt systems modeled in MADYMO.
Advancedrestraint
25
MADYMO scripting and automation
Python and MADYMO XML interfaces for batch runs, DOE, and optimization loops.
MADYMOscripting
26
Post-processing and visualization
MADYMO Viewer, XMADgic, and extracting restraint performance data for optimization.
Post-processingvisualization
27
Sensitivity analysis and factor prioritization
identifying critical restraint parameters using MADYMO DOE results.
Sensitivityanalysis
28
Multi-objective trade-off analysis
balancing injury criteria, cost, and packaging constraints in restraint system design.
Multi-objectivetrade-off
29
Restraint system optimization for electric and autonomous vehicles
new interior layouts, seat orientations, and MADYMO modeling challenges.
Restraintoptimization
30
Capstone project
end-to-end MADYMO restraint system design and optimization for a given vehicle crash scenario, from model setup to robust optimum.
Capstoneend-to-end