Fracture Behavior and Energy Analysis of 3D Concrete Mesostructure under Uniaxial Compression
Abstract
:1. Introduction
2. Numerical Model
2.1. Generation of Aggregates Based on 3D Voronoi Tessellation
2.2. Application of Cohesive Elements
2.3. Modified Constitutive Applied in Cohesive Elements
2.4. Calculation of Three Different Types of Energy
3. Numerical Examples and Results
3.1. Input Data of the Finite Element Model
3.2. Effect of Loading Surface Friction Coefficient under Compression
3.2.1. Low-Friction (LF) Condition
3.2.2. High-Friction (HF) Condition
3.2.3. Energy Analysis
3.3. Effect of Specimen Height
3.3.1. Fracture Pattern and Mechanical Behavior
3.3.2. Energy Analysis
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Grain Size (mm) | Unit Content (kg/m3) | Volume Content (%) |
---|---|---|
8~4 | 540 | 19.29 |
4~2 | 363 | 12.91 |
2~1 | 272 | 9.71 |
1~0.5 | 272 | 9.71 |
0.5~0.25 | 234 | 8.35 |
Loading Condition | Energy Type | Energy Value (N∙m) | Energy Proportion (%) |
---|---|---|---|
LF condition | 3.31 | 8.88 | |
21.85 | 58.57 | ||
12.14 | 32.55 | ||
HF condition | 3.12 | 5.12 | |
30.47 | 49.98 | ||
27.37 | 44.90 |
Height of Specimen | Energy Type | Energy Value (N∙m) | Energy Proportion (%) |
---|---|---|---|
200 mm | 4.31 | 8.49 | |
29.72 | 58.51 | ||
16.77 | 33.00 | ||
50 mm | 2.26 | 3.96 | |
24.05 | 42.14 | ||
30.77 | 53.90 |
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Huang, Y.; Hu, S.; Gu, Z.; Sun, Y. Fracture Behavior and Energy Analysis of 3D Concrete Mesostructure under Uniaxial Compression. Materials 2019, 12, 1929. https://doi.org/10.3390/ma12121929
Huang Y, Hu S, Gu Z, Sun Y. Fracture Behavior and Energy Analysis of 3D Concrete Mesostructure under Uniaxial Compression. Materials. 2019; 12(12):1929. https://doi.org/10.3390/ma12121929
Chicago/Turabian StyleHuang, Yiqun, Shaowei Hu, Zi Gu, and Yueyang Sun. 2019. "Fracture Behavior and Energy Analysis of 3D Concrete Mesostructure under Uniaxial Compression" Materials 12, no. 12: 1929. https://doi.org/10.3390/ma12121929