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Multi-Metric Occupant Injury Analysis and Response Tradeoffs

30 Chapters

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Course overview

scope, occupant injury metrics, response tradeoffs, and engineering context.

occupantresponse

Injury biomechanics fundamentals

load paths, tolerance thresholds, and injury criteria for head, neck, chest, abdomen, and lower extremities.

biomechanicstolerance

Multi-metric landscape

AIS, HIC, BrIC, NIC, chest deflection, Viscous Criterion, femur force, and tibia index as a coupled system.

Multi-metriclandscape

Data acquisition for occupant injury analysis

crash test sensors, accelerometers, load cells, high-speed video, and post-test measurement.

acquisitionoccupant

Signal processing and filtering

CFC filters, SAE J211, data alignment, and preprocessing for multi-metric injury computation.

processingfiltering

Metric computation workflows

implementing HIC, BrIC, NIC, and chest deflection from raw acceleration and displacement data.

computationworkflows

Restraint system response

seat belts, load limiters, pretensioners, airbags, and their influence on injury metric tradeoffs.

Restraintresponse

Seat and interior design effects

geometry, stiffness, padding, and contact surfaces as tradeoff levers across body regions.

interiorgeometry

Occupant packaging and posture

seating position, recline, belt fit, and out-of-position effects on multi-metric outcomes.

Occupantpackaging

Frontal impact tradeoffs

chest deflection versus head excursion, belt force limiting, and airbag deployment timing.

tradeoffsdeflection

Side impact tradeoffs

pelvic and thoracic injury versus head containment, side airbag and curtain performance.

tradeoffsthoracic

Rear impact and whiplash

neck injury criteria, seatback design, head restraint geometry, and tradeoffs with comfort.

whiplashcriteria

Rollover and ejection mitigation

roof strength, curtain airbags, belt effectiveness, and multi-metric occupant retention.

Rolloverejection

Pedestrian and vulnerable road user protection

leg, pelvis, and head injury tradeoffs in vehicle front-end design.

Pedestrianvulnerable

Child occupant safety

CRS design, harness and booster effects, and multi-metric tradeoffs across child anthropometry.

Occupant variation

size, age, sex, and material properties affecting injury metric sensitivity and tradeoff decisions.

Occupantvariation

Human body models

THUMS, GHBMC, and simplified models for multi-metric injury prediction and tradeoff exploration.

ATD versus human body model correlation

biofidelity, metric transferability, and uncertainty in tradeoff analysis.

Simulation-driven tradeoff studies

DOE, surrogate modeling, and multi-objective optimization of restraint parameters.

Simulation-driventradeoff

Multi-objective optimization formulation

objective functions, constraints, Pareto frontiers, and injury metric weighting.

Multi-objectiveoptimization

Sensitivity and robustness analysis

parameter uncertainty, scatter, and reliability-based tradeoff assessment.

Sensitivityrobustness

Regulatory and consumer rating frameworks

FMVSS, Euro NCAP, IIHS, and their multi-metric scoring implications.

Regulatoryconsumer

Real-world crash data analysis

NASS, CISS, and field data for validating tradeoff assumptions and injury outcomes.

Real-worldanalysis

frontal restraint tuning for chest deflection and head injury tradeoff using DOE and simulation.

restraintdeflection

side impact airbag and structure optimization for thoracic and head injury balance.

structureoptimization

rear impact seat and head restraint design balancing whiplash and comfort metrics.

restraintbalancing

child restraint system parameter selection across multiple injury metrics and crash modes.

restraintparameter

Integrated CAE workflow

model setup, metric extraction, automation, and tradeoff visualization for occupant safety.

Decision-making under tradeoffs

communicating multi-metric results, selecting designs, and documenting rationale.

Decision-makingtradeoffs

Capstone project

multi-metric occupant injury analysis and response tradeoff study for a defined vehicle and restraint system.

Capstonemulti-metric