Numerical Simulation of Compressive Mechanical Properties of 3D Printed Lattice-Reinforced Cement-Based Composites Based on ABAQUS
Abstract
:1. Introduction
2. Finite Element Model Modeling
2.1. Material Parameters
2.2. Structural Design
2.3. Finite Element Simulation
3. Results and Discussion
3.1. Stress–Strain Curve Analysis
- (1)
- Initial Stage (O-A): During this phase, the stress level reaches approximately 70% to 85% of the peak stress. At this point, the deformation observed in the specimen is predominantly elastic, resulting from the interaction between the cement matrix and the polymer lattice. This behavior is interpreted as linear elastic deformation, evident from the near-linear relationship depicted in the stress–strain curve. Concurrently, material displacement changes are minimal, despite the significant alterations in the load.
- (2)
- Second Stage (A-B): At this stage, stress levels range from approximately 85% to 93% of the peak stress. The deformation behavior of the specimen is marked by the gradual emergence and expansion of small cracks within the sample, commensurate with the loading process.
- (3)
- Second Stage (A-B): In this stage, the stress reaches roughly 85% to 93% of the peak load. The stage is characterized by the gradual appearance and steady expansion of small cracks within the specimen.
- (4)
- Third Stage (B-C): Stress levels during this stage approximate 93% to 100% of peak stress. This phase is marked by a deceleration in the material’s compressive capacity enhancement. Concurrently, the stress–strain curves exhibit an increasing curvature, transitioning towards a more gradual trend. The predominant deformation observed in the specimen is of an irreversible plastic nature, with a minor component of elastic deformation also present at this stage.
- (5)
- Fourth Stage (C-): Upon exceeding the peak stress, the sample’s compressive properties begin to diminish correspondingly. As the external force applied to the material escalates with continued loading, the damage to the specimen progressively worsens.
3.2. Strain Analysis
4. Conclusions
- (1)
- Through the creation of a precise finite element model and the simulation of laboratory uniaxial compression tests, this study has successfully validated the accuracy of its numerical analysis model. This achievement not only furnishes a dependable simulation methodology for subsequent research endeavors but also lays a robust groundwork for the enhanced analysis and application of experimental data. Moreover, the process of developing and validating the model serves as a valuable benchmark for the numerical simulation of analogous materials and structures.
- (2)
- The study reveals that variations in ambient temperature markedly influence the elastic modulus of 3D-printed polymer materials, subsequently altering the compressive mechanical properties of cement-based composites. This finding underscores the necessity of accounting for material performance shifts under diverse temperature conditions in practical engineering applications to ensure the reliability and safety of structures.
- (3)
- This study demonstrates that the compressive strength of composite materials tends to decrease as the elastic modulus of polymer materials is reduced. This observation holds significant implications for the optimization of composite material design and the enhancement of their structural characteristics.
- (4)
- The findings indicate that as Young’s modulus of the polymer decreases, the strain region widens while the maximum strain diminishes, suggesting an impact on both the ductility and load-bearing capacity of the structure. Furthermore, when the elastic modulus falls to a specific critical threshold, specimen cracking occurs at the onset of the compression test. This highlights the necessity for meticulous attention to the lower limits of material properties during the design process to prevent premature failure.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Density (kg/m3) | 2.4 × 10−9 |
Young’s modulus (GPa) | 30 |
Poisson’s ratio | 0.2 |
expansion angle (°) | 30 |
eccentricity ratio | 0.1 |
fb0/fco | 1.16 |
k | 0.6667 |
Viscous parameter | 0.0005 |
Density (kg/m3) | Indoor Temperature Young’s Modulus (MPa) | Poisson’s Ratio |
---|---|---|
1.1 × 10−9 | 934 | 0.38 |
Environment Temperature | Indoor Temperature | 50 °C | 100 °C |
---|---|---|---|
elasticity modulus | 934 MPa | 564 MPa | 200 MPa |
Structure Serial Number | Lattice Unit Cell Type | Unit Cell Design | Cell Design Parameters (mm) | CAD Southwest View |
---|---|---|---|---|
1 | circle | D = 10, d = 1.246 | ||
2 | cubic | l = 10, d = 1.659 | ||
3 | kelvin | l = 3.54, d = 1.183 | ||
4 | octagonal (Oct), | l = 4.14, d = 0.979 | ||
5 | rhombicubactahedron (RO) | l = 1.414, d = 0.916 | ||
6 | strengthened octagon octagonal (SO) | l = 3.54, d = 0.979 |
Elasticity Modulus | E1 = 934 MPa | E2 = 564 MPa | E3 = 200 MPa | |
---|---|---|---|---|
Crystal Structure | ||||
Circular | 26.23 | 26.04 | 22.74 | |
Cubic | 25.23 | 25.17 | 23.16 | |
Kelvin | 28.49 | 28.45 | 21.79 | |
Oct. | 28.57 | 23.48 | 20.21 | |
RO | 26.02 | 23.27 | 19.46 | |
SO | 26.26 | 23.18 | 19.41 |
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Wu, W.; Qiao, J.; Wei, Y.; Hao, W.; Tang, C. Numerical Simulation of Compressive Mechanical Properties of 3D Printed Lattice-Reinforced Cement-Based Composites Based on ABAQUS. Materials 2024, 17, 2370. https://doi.org/10.3390/ma17102370
Wu W, Qiao J, Wei Y, Hao W, Tang C. Numerical Simulation of Compressive Mechanical Properties of 3D Printed Lattice-Reinforced Cement-Based Composites Based on ABAQUS. Materials. 2024; 17(10):2370. https://doi.org/10.3390/ma17102370
Chicago/Turabian StyleWu, Weiguo, Jing Qiao, Yuanyuan Wei, Wenfeng Hao, and Can Tang. 2024. "Numerical Simulation of Compressive Mechanical Properties of 3D Printed Lattice-Reinforced Cement-Based Composites Based on ABAQUS" Materials 17, no. 10: 2370. https://doi.org/10.3390/ma17102370