||Automotive Crash Safety; Active & Passive Safety Systems
||Dr.ir. R. Happee
|Contact Hours / Week x/x/x/x:
||Specialisation Automotive in the tracks ME-CE, ME-PME, ME-BMD
|Expected prior knowledge:
||WB3404A Vehicle Dynamics A can be followed in parallel (recommended, not essential).
||Automotive Safety technologies are covered with a focus on human factors, injury biomechanics, vehicle technology, test procedures, sensing and control.
||1. Road safety - Problem & Countermeasures
Introduction of the course
The road safety problem:
- Safety in different transport modes (car occupants, pedestrians, cyclists, motorcyclists and others).
- Breakdown of costs into life years lost, medical and rehabilitation costs, vehicle damage and congestion due to accidents.
- Safety in first, second and third world countries.
Countermeasures (Haddon Matrix):
- Vehicle safety technologies (which are the focus of this course),
road infrastructure, enforcement of speed, alcohol and other regulations,
- Consisting of Pre-crash, In-crash and Post-crash measures.
2. Active Safety – Vehicle Dynamics Control
- The role of tyre, suspension, steering and braking system.
- Antilock Braking Systems (ABS).
- Electronic Stability Programs (ESP).
3. Active Safety – Driver Assistance & Automation
- Vision and Visibility.
- Obstacle & vehicle detection technology.
- Vehicle to vehicle communication and vehicle to infrastructure communication.
- Driver assistance systems such as (adaptive) cruise control, brake assist, automatic emergency braking, lane departure warning & prevention.
- Highly Automated Driving.
- Automation versus support, driver acceptance, trust and overreliance, behaviour adaptation.
4. Passive Safety - Crash Dummies & Injury Assessment
- Injury severity scales (AIS, MAIS, …)
- Injury criteria and tolerances and their derivation from biomechanical testing and real accidents.
- Development and validation of crash test dummies using biomechanical data.
- Mathematical human body models.
5. Passive Safety – Design for Impact conditions
Frontal car impact will be used to demonstrate how occupant safety is enhanced by the deformable vehicle front structure, the protective vehicle compartment, belt system, airbag and seat.
- Injuries to car occupants in Frontal Impact.
- Demonstrated benefits of belts and airbags.
- Energy dissipation; optimal force-deflection characteristics with maximal energy dissipation and minimal deformation (illustrated with an assignment).
- Crush zone & Safety cabin, compatibility of vehicle shape and stiffness across the diversifying car fleet.
- Belt & airbag, triggering of belt pretensioner and airbag
- Test procedures and design methods.
- Effect of vehicle mass, velocity, crush zone stiffness, belt and airbag stiffness on human body accelerations and injury risk (explored with an assignment using the crash simulation software MADYMO).
Side Impact, Rollover, Rear impact & Pedestrian will be reviewed in a similar manner:
- SIDE IMPACT: Protection offered by the protective vehicle compartment, airbags and vehicle interior padding.
- ROLLOVER: Effectiveness of curtain airbags and belts to prevent ejection.
- REAR IMPACT: Passive and active seat systems for rear impact.
- PEDESTRIANS and CYCLISTS impacted by vehicle fronts: Deformable vehicle front and bonnet structures.
6. Safety test procedures
Review of regulated test procedures, consumer test procedures and best practice for active and passive safety as introduced in previous sessions.
||Upon successful completion of the course you will be able to:
1. Describe and analyse potential benefits of current and future automotive safety systems
2. Contribute to the design of automotive safety systems, using established and innovative test procedures
3. Express your own vision on future developments of automotive safety systems
||Lectures (4 hours per week)
||The Written Exam can be taken after successful completion of the assignments
|Enrolment / Application:
||Register on Blackboard and mail email@example.com
|Percentage of Design: