Analysis of Fractal and Energy Consumption Characteristics of Concrete under Impact Loading

Li, Yutao; Dang, Faning; Zhou, Mei; Ren, Jie

doi:10.1155/2021/2370363

Cited by 2 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results showed that the fractal dimension of rock fragmentation and the energy dissipation density increase with the increase in strain rate, and the relationship between them satisfies the power function. Li et al (2021) studied the effects of loading rate and aggregate volume fraction on the fractal fracture characteristics of concrete through SHPB experiments and established the analytical expressions of fragmentation fractal dimension and crack surface energy on the basis of fracture theory. Results indicated that the fractal dimension, energy dissipation in fragmentation and crack surface energy increase with the increase in impact velocity and decrease with the increase in aggregate volume ratio.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the energy dissipation of foam concrete plate fragmentation under explosion loading

Shang

Huang

et al. 2022

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

Fragmentation is the main energy dissipation form of foam concrete under explosion loading. To characterize the energy dissipation of foam concrete fragmentation quantitatively, explosion loading experiments of foam concrete plates under different stand-offs and plate thicknesses were carried out. The statistical characteristics of fragments and the energy dissipation law of foam concrete plate fragmentation were studied using image processing, fracture mechanics theory and fractal theory. An engineering calculation model of fragmentation fractal dimension and energy dissipation density of foam concrete plates were established. Results show that: the fragmentation of foam concrete plates under different explosion conditions is a fractal in the statistical sense. With the increase in stand-off and plate thickness, the fragment size of foam concrete plates increases, and the fragmentation fractal dimension decreases linearly. The linear relationship between the energy dissipation density and the fragmentation fractal dimension of foam concrete are expressed as 0.0165 1.053 f D ω = +.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental study on the energy dissipation of foam concrete plate fragmentation under explosion loading

Shang

Huang

et al. 2022

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

Analysis of Impact Crushing Characteristics of Steel Fiber Reinforced Recycled Aggregate Concrete Based on Fractal Theory

Zhang,

Zhu,

Wang

et al. 2024

Fractal Fract

View full text Add to dashboard Cite

The fractal theory can effectively describe the complexity and multi-scale of concrete under impact load and provide a scientific basis for evaluating concrete’s impact resistance. Therefore, based on the fractal theory, this study carried out the fragmentation size analysis by weighing the quality of SFRRAC fragments, disclosed the distribution characteristics of impact fragmentation size of steel fiber reinforced recycled aggregate concrete (SFRRAC) specimens under different recycled coarse aggregate (RCA) replacement ratio, different steel fiber (SF) contents and different impact pressures. The results indicate that the fractal dimension can describe the degree of fragmentation of the specimen. The greater the fractal dimension, the more the amount of fragmentation of the specimen subjected to impact load, the lesser the fragmentation size, and the greater the degree of fragmentation. Under the impact load, the fractal dimension of SFRRAC is between 1.36 and 2.28. As the impact pressure increases, the energy consumption increases, and the fractal dimension decreases. With the growth in replacement ratio, the fractal dimension gradually increases, and the energy consumption is negatively correlated with the fractal dimension. Along with the growth of SF content, the energy consumption gradually increases, and the fractal dimension continuously decreases. A new metric angle is provided to explore the inherent law between the impact-crushing characteristics of SFRRAC and the dynamic load, thereby offering foundational support for the application of SFRRAC in practical engineering.

show abstract

Analysis of Fractal and Energy Consumption Characteristics of Concrete under Impact Loading

Cited by 2 publications

References 22 publications

Experimental study on the energy dissipation of foam concrete plate fragmentation under explosion loading

Experimental study on the energy dissipation of foam concrete plate fragmentation under explosion loading

Analysis of Impact Crushing Characteristics of Steel Fiber Reinforced Recycled Aggregate Concrete Based on Fractal Theory

Contact Info

Product

Resources

About