Numerical Buckling Analysis of Hybrid Honeycomb Cores for Advanced Helmholtz Resonator Liners
Abstract
:1. Introduction
2. Materials and Methods
2.1. Structural Design
2.2. Material and Failure Behavior of Polymer and Composite Structures
2.3. Modelling and Numerical Implementation of Honeycomb Core Buckling
2.3.1. Geometry and Boundary Conditions
2.3.2. Implementation of Geometrical Imperfection
2.3.3. Determination of the Fiber Reinforced Plastic Failure Behavior
3. Results and Discussion
3.1. Resulting Deformation Behavior and Composite Failure
3.2. Influence of Tape Configuration on Failure Behavior
3.3. Resulting Properties of the Composite Core Structure
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Square | Square | Square | Hexagonal | Hexagonal | |
---|---|---|---|---|---|
Cell structure | |||||
Sketch of core |
12 | 9 | 6 | ||
---|---|---|---|---|
[mm] | 0.78 | |||
0.52 | ||||
0.26 |
Property 1 | Symbol | Unit | Quantity |
---|---|---|---|
Thermoplastic Polyurethane | |||
Young’s modulus | MPa | 1647 | |
Poisson ratio | - | 0.4078 | |
Density | g/cm³ | 1.178 | |
Tensile Strength | MPa | 48.84 | |
Carbon fiber reinforced polyamide 6 | |||
Youngs modulus in | MPa | 103,400 | |
Youngs modulus | MPa | 3600 | |
Poisson ratio / | - | 0.29 | |
Poisson ratio / | - | 0.37 | |
Shear modulus / | MPa | 1810 | |
Shear modulus matrix | MPa | 1193 | |
Tensile strength | MPa | 1637 | |
Tensile strength ⊥ | MPa | 18.4 | |
Compression strength | MPa | 324 | |
Compression strength | MPa | 91 | |
Shear strength / | MPa | 36.6 | |
Shear strength ⊥/⊥ | MPa | 19.5 | |
Density | g/cm³ | 1.450 |
Tape thickness [mm] | 0.78 | 0.52 | 0.26 | ||||||
Tape width [mm] | 12 | 9 | 6 | 12 | 9 | 6 | 12 | 9 | 6 |
Puck | |||||||||
Fiber compression failure [-] | 0.99 | 1.00 | 1.00 | 0.73 | 0.75 | 0.98 | 0.95 | 1.00 | 1.00 |
Inter-fiber tensile failure [-] | 1.00 | 0.94 | 0.50 | 1.00 | 1.00 | 1.00 | 1.00 | 0.96 | 0.95 |
Inter-fiber compression failure [-] | 0.26 | 0.22 | 0.14 | 0.25 | 0.21 | 0.19 | 0.38 | 0.30 | 0.24 |
Cuntze | |||||||||
Inter-fiber tensile failure- IFF1 [-] | 1.00 | 0.94 | 0.50 | 1.00 | 1.00 | 1.00 | 1.00 | 0.96 | 0.95 |
Inter-fiber shear failure- IFF2 [-] | 0.02 | 0.01 | 0.02 | 0.02 | 0.01 | 0.04 | 0.07 | 0.08 | 0.18 |
Inter-fiber compression failure- IFF3 [-] | 0.19 | 0.17 | 0.09 | 0.17 | 0.16 | 0.07 | 0.11 | 0.11 | 0.11 |
[N/mm2] | 4.64 | 2.96 | 1.55 | 1.98 | 1.32 | 0.79 | 1.07 | 0.6 | 0.36 |
[%] | 0.19 | 0.18 | 0.16 | 0.13 | 0.13 | 0.17 | 0.21 | 0.20 | 0.22 |
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Neubauer, M.; Dannemann, M.; Kucher, M.; Bleil, N.; Wollmann, T.; Modler, N. Numerical Buckling Analysis of Hybrid Honeycomb Cores for Advanced Helmholtz Resonator Liners. J. Compos. Sci. 2021, 5, 116. https://doi.org/10.3390/jcs5050116
Neubauer M, Dannemann M, Kucher M, Bleil N, Wollmann T, Modler N. Numerical Buckling Analysis of Hybrid Honeycomb Cores for Advanced Helmholtz Resonator Liners. Journal of Composites Science. 2021; 5(5):116. https://doi.org/10.3390/jcs5050116
Chicago/Turabian StyleNeubauer, Moritz, Martin Dannemann, Michael Kucher, Niklas Bleil, Tino Wollmann, and Niels Modler. 2021. "Numerical Buckling Analysis of Hybrid Honeycomb Cores for Advanced Helmholtz Resonator Liners" Journal of Composites Science 5, no. 5: 116. https://doi.org/10.3390/jcs5050116