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Crashworthiness Analysis of Thin-Walled Square Columns with a Hole Trigger
Michał Rogala1, Jakub Gajewski1
1Department of Machine Design and Mechatronics, Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland.
Materials (Basel, Switzerland)
|June 10, 2023
Summary
This study investigates thin-walled aluminum structures as passive energy absorbers. Varying hole diameter significantly impacts crushing force and efficiency, optimizing energy absorption capabilities.
Area of Science:
- Mechanical Engineering
- Materials Science
Background:
- Thin-walled structures are utilized as passive energy absorbers.
- Progressive harmonic crushing is a key mechanism for energy absorption.
Purpose of the Study:
- To analyze the effect of drilled holes as crush initiators on the energy absorption of thin-walled structures.
- To investigate the influence of hole diameter and number on the performance of aluminum alloy (AA-6063-T6) energy absorbers.
Main Methods:
- Experimental testing using an INSTRON 9350 HES.
- Numerical analysis employing Abaqus software.
- Dynamic axial loading of thin-walled structures with varying hole configurations.
Main Results:
- The diameter of the drilled holes significantly affects the mean crushing force.
- Hole diameter is a critical parameter influencing the stroke efficiency indicator.
- The number of holes also plays a role in the energy absorption characteristics.
Conclusions:
- Optimizing hole diameter is crucial for enhancing the energy absorption performance of these structures.
- The findings provide valuable insights for designing more effective passive energy absorbers.
- Hole configuration serves as an effective method for tuning the dynamic response of energy absorbers.
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