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Compression Behavior of Hybrid Tubes for Lightweight Steel Structures
Gregorio Torres-Escobar1, Juan Carlos Suárez-Bermejo2, José Manuel Arenas3
1Departamento Ciencia de Materiales, E.T.S.I. Navales, Univesidad Politécnica de Madrid, Av. de la Memoria n° 4, 28040 Madrid, Spain.
Materials (Basel, Switzerland)
|November 27, 2021
Summary
Hybrid steel tubes with resistant fillers improve mechanical performance, enabling a second load cycle. Epoxy-filled tubes notably absorb more strain energy per unit of weight.
Area of Science:
- Materials Science
- Structural Engineering
- Mechanical Engineering
Background:
- Hybrid steel tubes offer potential for enhanced structural applications.
- Investigating the mechanical behavior of composite materials is crucial for engineering advancements.
Purpose of the Study:
- To experimentally investigate the compression behavior of hybrid steel tubes with various non-metallic fillers.
- To evaluate the impact of different fillers on the mechanical performance and energy absorption of double steel tubes.
Main Methods:
- Experimental testing of hybrid steel tubes under compression.
- Utilizing four different non-metallic fillers: polyurethane foam, polyurethane, epoxy, and cement-based mortar.
- Analyzing mechanical behavior, load cycles, and strain energy absorption.
Main Results:
- The incorporation of resistant fillers improved the mechanical behavior of the hybrid steel tubes.
- Hybrid tubes with fillers demonstrated the ability to undergo a second load cycle.
- Epoxy-filled tubes exhibited superior strain energy absorption per unit of weight compared to other fillers.
Conclusions:
- Resistant fillers significantly enhance the performance of hybrid steel tubes, enabling multi-cycle loading.
- Epoxy stands out as the most effective filler for maximizing strain energy absorption relative to weight in these hybrid structures.
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