Plastic Crushing Failure of Bio-Inspired Cellular Hierarchical Topological Sandwich Core
Abstract
:1. Introduction
2. Experimental Details
2.1. Hierarchical Honeycomb Topologies
2.2. Selective Laser Melting (SLM) Fabricating Method
2.3. Mechanical Testing
2.3.1. Uniaxial Tensile Test of Constituent Materials
2.3.2. In-Plane Compression Test of Hierarchical Honeycomb Specimens
3. Results and Discussion
3.1. Uniaxial Tensile Characteristics of SLM Manufactured AlSi10Mg Alloy and 316L Steel Material
3.2. In-Plane Compressive Behavior of Hierarchical Honeycombs
3.2.1. Compressive Stress versus Strain Relations
3.2.2. Deformation Modes of AlSi10Mg Alloy Hierarchical Honeycombs
3.2.3. Deformation Modes of 316L Steel Hierarchical Honeycombs
3.3. In-Plane Failure Mechanism of Hierarchical Honeycombs
3.4. Comparison of Mechanical Properties between AlSi10Mg Alloy and 316L Steel Hierarchical Honeycombs
3.4.1. Compressive Strength
3.4.2. Elastic Modulus
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Materials | Numbering | |||||
---|---|---|---|---|---|---|
AlSi10Mg alloy/ 316L steel | AL-N7/ST-N7 | 0.40 | 6.7 | - | - | 0.069 |
AL-F7/ST-F7 | 0.26 | 0.3 | - | 0.072 | ||
AL-S7/ST-S7 | 0.2 | 0.3 | 0.12 | 0.080 | ||
AL-N11/ST-N11 | 0.64 | - | - | 0.110 | ||
AL-F11/ST-F11 | 0.42 | 0.3 | - | 0.116 | ||
AL-S11/ST-S11 | 0.29 | 0.3 | 0.12 | 0.116 | ||
AL-N21/ST-N21 | 1.28 | - | - | 0.220 | ||
AL-F21/ST-F21 | 0.74 | 0.3 | - | 0.204 | ||
AL-S21/ST-S21 | 0.54 | 0.3 | 0.12 | 0.216 |
Mechanical Properties | AlSi10Mg Alloy | 316L Steel | ||||||
---|---|---|---|---|---|---|---|---|
Direction 1 | Standard Deviation | Direction 2 | Standard Deviation | Direction 1 | Standard Deviation | Direction 2 | Standard Deviation | |
Elastic modulus Es | 71 GPa | 3.5 GPa | 53 GPa | 3.2 GPa | 147 GPa | 9.7 GPa | 147 GPa | 10.3 GPa |
Yield strength σys | 200 MPa | 5.8 MPa | 200 MPa | 13.4 MPa | 533 MPa | 21.4 MPa | 524 MPa | 24.3 MPa |
Tensile strength σt | 423 MPa | 11.2 MPa | 331 MPa | 20.9 MPa | 640 MPa | 29.7 MPa | 639 MPa | 37.8 MPa |
Failure strain εt | 7.7% | 0.67% | 3.8% | 0.29% | 27.8% | 1.81% | 28.3% | 1.94% |
Honeycomb Type | AlSi10Mg Alloy Honeycomb | 316L Steel Honeycomb | |||
---|---|---|---|---|---|
E (MPa) | E (MPa) | ||||
0.07 | Normal order | 0.47 | 17.75 | 0.28 | 20.09 |
First-order | 0.50 | 31.89 | 0.21 | 28.32 | |
Second-order | 0.54 | 64.36 | 0.20 | 36.48 | |
0.11 | Normal order | 1.92 | 72.37 | 2.05 | 110.45 |
First-order | 1.42 | 134.41 | 1.65 | 120.15 | |
Second-order | 1.34 | 190.65 | 1.00 | 126.69 | |
0.21 | Normal order | 7.59 | 349.49 | 11.06 | 680.80 |
First-order | 9.94 | 794.74 | 10.51 | 694.72 | |
Second-order | 7.61 | 810.26 | 7.56 | 711.28 |
Honeycomb Order | AlSi10Mg Alloy | 316L Steel |
---|---|---|
Normal | 0.8516 | 0.4558 |
First | 1.0826 | 0.4298 |
Second | 0.8379 | 0.3072 |
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Zhang, Y.; Lin, Y.; Li, X. Plastic Crushing Failure of Bio-Inspired Cellular Hierarchical Topological Sandwich Core. Materials 2021, 14, 5040. https://doi.org/10.3390/ma14175040
Zhang Y, Lin Y, Li X. Plastic Crushing Failure of Bio-Inspired Cellular Hierarchical Topological Sandwich Core. Materials. 2021; 14(17):5040. https://doi.org/10.3390/ma14175040
Chicago/Turabian StyleZhang, Yuwu, Yuliang Lin, and Xiangcheng Li. 2021. "Plastic Crushing Failure of Bio-Inspired Cellular Hierarchical Topological Sandwich Core" Materials 14, no. 17: 5040. https://doi.org/10.3390/ma14175040