Endurance of Damping Properties of Foam-Filled Tubes
Abstract
:1. Introduction
1.1. Stability of Damping Properties of Cellular Metals
1.2. Stability of Damping Properties of Foam-Filled Structures
2. Damping Stability of Foam-Filled Tubes
2.1. Production and Properties of the Foam-Filled Tubes
Materials | Properties | |
---|---|---|
Outer case: steel tubular elements | Yield stress 250 MPa, length 500 mm, square cross-section 50 mm × 50 mm, 2 mm wall thickness | |
Filling: APM L | Low-density hybrid foam (estimated ρ ~ 490 kg/m3), made by hybrid aluminum-epoxy foam | |
Filling: APM H | High-density hybrid foam (estimated ρ ~ 590 kg/m3), made by hybrid aluminum-epoxy foam | |
Filling: AlSi10 | Alulight Foaminal AlSi10 foam (estimated ρ ~ 550 kg/m3) |
2.2. Cyclic Three-Point Bending Tests
2.2.1. Preliminary Tests
2.2.2. Final Tests
2.3. Modal Analysis
3. The Interface Effect
3.1. Test Materials
3.2. The Influence on Damping
3.2.1. Methods
3.2.2. Results
3.3. Cyclic Three-Point Bending Tests
3.3.1. Step Loading Preliminary Tests
3.3.2. Constant Loading Test
Specimen | dmax (first cycle) | dmax (last cycle) | Δdmax% |
---|---|---|---|
AlSi Ln | 0.4065 | 0.4507 | +10.9% |
AlSi Hn | 0.3321 | 0.3877 | +16.7% |
AlSi Lb | 0.2404 | 0.2728 | +13.5% |
AlSi Hb | 0.1856 | 0.2134 | +15.0% |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
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Strano, M.; Marra, A.; Mussi, V.; Goletti, M.; Bocher, P. Endurance of Damping Properties of Foam-Filled Tubes. Materials 2015, 8, 4061-4079. https://doi.org/10.3390/ma8074061
Strano M, Marra A, Mussi V, Goletti M, Bocher P. Endurance of Damping Properties of Foam-Filled Tubes. Materials. 2015; 8(7):4061-4079. https://doi.org/10.3390/ma8074061
Chicago/Turabian StyleStrano, Matteo, Alessandro Marra, Valerio Mussi, Massimo Goletti, and Philippe Bocher. 2015. "Endurance of Damping Properties of Foam-Filled Tubes" Materials 8, no. 7: 4061-4079. https://doi.org/10.3390/ma8074061