Effects of Size on Shear Strength of 3D-Printed Soft Rock Materials
Author Information
Author(s): Wu Chaolei, Jiang Lishuai, Zhao Yang, Wu Qi, Yang Yiming, Peng Xiaohan, Li Pimao
Primary Institution: Shandong University of Science and Technology
Hypothesis
How does specimen size affect the shear strength and failure patterns of 3D-printed soft rock-like materials under different shear velocities?
Conclusion
The shear strength of 3D-printed soft rock specimens decreases as the specimen size increases, and this effect is influenced by shear velocity.
Supporting Evidence
- The shear strength decreases progressively with increasing specimen size.
- The increase in shear velocity shows a suppressive effect on the significance of the size effect.
- Larger specimens are more prone to secondary cracks, leading to lower shear strength.
- The wear on shear failure surfaces exhibits a size effect similar to that of shear strength.
Takeaway
Bigger pieces of 3D-printed rock are weaker when you push on them, and how fast you push matters too.
Methodology
The study prepared 3D-printed rock-like specimens of different sizes and conducted shear tests at various velocities to analyze their shear strength and failure patterns.
Limitations
The study did not test 3D-printed rock specimens with varying printing directions or explore the role of fractures in size effect analyses.
Digital Object Identifier (DOI)
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