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Composite Hat Structure Design for Vehicle Safety: Potential Application to B-Pillar and Door Intrusion Beam
Samer Fakhri Abdulqadir1, Faris Tarlochan2
1Department of Mechanical Engineering, University of Anbar, Ramadi P.O. Box 5543, Iraq.
Materials (Basel, Switzerland)
|February 15, 2022
Summary
This study investigates carbon-reinforced top-hat sections for vehicle side-impact protection. Finite element analysis and experiments show these structures effectively absorb energy, making them suitable for intrusion beams.
Area of Science:
- Materials Science
- Mechanical Engineering
- Automotive Safety
Background:
- Limited research exists on thin-walled structures for side-impact collisions compared to frontal ones.
- Vehicle crashworthiness is crucial for occupant safety, especially in side impacts.
Purpose of the Study:
- To experimentally investigate and model carbon-reinforced thin-walled top-hat sections under transverse bending.
- To evaluate the suitability of these structures for side-impact crashworthiness applications.
Main Methods:
- Experimental testing of carbon-reinforced top-hat sections under quasi-static and dynamic transverse bending loads.
- Finite element analysis (FEA) to model the structural behavior.
- Validation of FEA results against experimental data.
Main Results:
- Dynamic loading resulted in higher peak load and energy absorption compared to static loading.
- Stacking sequence influenced energy absorption by 15-30% in four-point bending.
- Increased indenter distance in four-point bending enhanced energy absorption by 10%.
Conclusions:
- Top-hat shaped thin-walled structures are effective for deep intrusion beams in vehicle doors.
- The study validates FEA for predicting crashworthiness of these composite structures.
- Optimizing stacking sequence and geometry can enhance energy absorption for improved side-impact safety.
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