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Vehicle Safety
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The increasing acceptance of new material developments by the Automobile Industry and their impact on vehicle construction methods which resulted from increasingly extensive legal regulation, have led to ever increasing demands on vehicle safety. With the development of enhanced CAE methods and the parallel application of these tools in vehicle development projects, CDH AG continues to support customers in satisfying these requirements. Engineering support is provided in the fields of structural crash, occupant safety and pedestrian safety. |
Crash-Simulation
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The optimum distribution of the deformation
energy absorbed by the structure during crash
leads to a minimization of deformation
within the passenger compartment:
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- Simulation of individual crash disciplines, e.g. Front-, Side- and Rear-crash, to analyze energy absorption and occurring deformation and intrusion, as well as their influences to the vehicle structure.
- Improvement of vehicle structure to fulfill international safety regulations and standards (e.g. FMVSS, SAE, NCAP)
- Consideration of customer development targets, such as material-, mass- and packaging requirements:
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- Bumper collision in accordance with the requirements of ECE, FMVSS, CVMSS, etc. (damage)
- Low-Speed-Crash in accordance with AZT, IIHS, … (cost of repair)
- Door-, roof- and B-pillar intrusion (dynamic & quasi static)
- Application of topography- und topology optimization within the scope of multi-disciplinary investigations
- Development of FEM simulation models e.g. crash barriers and impact models
- Development of modelling methods e.g. connection techniques and material failure.
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Occupant Safety
| Due to air bags and other restraining systems,
passenger safety has reached a high level of maturity.
However, potential still remains for improvement in safety:
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The safety systems are required to be more robust in terms of "out of position" and "misuse" performance. Using simulation techniques, CDH engineers support the optimal design of passenger safety systems such as airbags, belt tensioning and head rest systems thus reducing risk to occupants in the "out of position" and "misuse" situations (e.g. whiplash).
Virtual Occupant safety simulations allow optimal configuration and setup of safety systems, such as airbags, belt pretensioners and headrests, to reduce injury risk.
In this connection CDH is carrying out crash simulations and occupant safety analysis in accordance with legal safety regulations and consumer protection test and corresponding virtual dummy models.
Greenhouse head impact analysis in accordance with FMVSS201
Airbag model evaluation und optimization
Pedestrian Safety
| In addition to occupant safety, pedestrian safety represents an
important factor in vehicle safety. In cooperation with
international automobile manufacturers, CDH developed
its own crash impactors (e.g. upper and lower leg, child
and adult head) for pedestrian safety analysis. Analysis and
optimization of design measures and safety systems to minimize
injury risks to pedestrians is a central element of vehicle safety
services at CDH:
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- Development of concepts for vehicle front end structures / Layout of individual components in accordance with legal regulations and consumer protection tests (e.g. ECE / NCAP)
- Validation of pedestrian safety targets with support of FEM simulation and Planning/Management of pedestrian safety physical tests and measurements.
- Method Development for pedestrian safety simulation
- Modelling of plastic components
- Energy absorbing plastic foams, honeycombs
- Validation of simulation models for individual components
- Method development for optimization
- Development of design criteria for active and passive pedestrian safety systems (e.g. bumper systems)
- Multi disciplinary optimization scenarios
- Connection of design and simulation via integration of CATIA V5
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