Energy absorption characteristics and theoretical analysis of frozen clay with pre-existing cracks under uniaxial compressive impact load

Ma, Qinghai; Huang, Kun; Ma, Dongdong

doi:10.1016/j.coldregions.2020.103206

Cited by 21 publications

(11 citation statements)

References 21 publications

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“…Figure 4 shows that Phase I is the elastic section, where the stress and strain increase linearly. This is because both the soil matrix and the ice–salt eutectic colloids exhibit good linear elasticity (Leclair et al., 1999; Ma et al., 2021; Xie et al., 2016). Phase II is the hardened section, where the samples exhibit a more pronounced strain-hardening behavior.…”

Section: Shpb Testmentioning

confidence: 99%

“…The samples were compacted to promote rearrangement and pore evolution in the soil matrix. Microcracks of different sizes present at the points (surfaces) where the soil matrix and ice–salt eutectic are bonded to each other begin to nucleate and grow (Ma et al., 2021). Phase III is the softening section.…”

Section: Shpb Testmentioning

confidence: 99%

“…Moreover, internal cracks have insufficient time to connect fully along the vulnerable areas. Therefore, the higher the loading strain rate, the greater the crack expansion (Ma et al., 2021). The association failure strain and salt content are shown in Figure 7.…”

Section: Shpb Testmentioning

confidence: 99%

“…Relevant research on materials under high impact loading conditions has generally used split Hopkinson pressure bar (SHPB) devices (Chen and Song, 2011;Chunyu et al, 2022;Fu et al, 2019;Leclair et al, 1999;Li et al, 2023;Long et al, 2022;Shangguan et al, 2020;Tao et al, 2023;Yu et al, 2023;Zhao et al, 2022). Researchers have conducted detailed investigations of impact dynamic constitutive models through damage mechanics (Cao et al, 2017;Zhang et al, 2021;Zhu et al, 2019Zhu et al, , 2020, macroscopic-mesoscopic mechanics (Xie et al, 2016;Zhu et al, 2018), and energy characteristic theories (Ma et al, 2021;Shangguan et al, 2020). Zhu et al (2018) studied the evolution equation of the damage mechanism of microcracks and the influence of soil particle size and they established a macroscopic-mesoscopic constitutive model of frozen soil.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic constitutive model of saturated saline frozen soil under uniaxial impact loading

Shang,

Zhu,

et al. 2024

International Journal of Damage Mechanics

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The soil matrix, salt crystals, ice crystals, and pore solutions constitute the composite geological material of saturated saline frozen soil. The destruction mode and dynamic constitutive model of saturated saline frozen soil need to be studied because infrastructure construction is increasingly being extended to regions with saturated saline frozen soil. Based on the split Hopkinson pressure bar device, uniaxial impact compression tests were conducted on frozen soil samples with different salt contents under different strain rates. The strain rate of saturated saline frozen soil must be emphasized based on the results. The gradient of the elastic segment and maximum stress of the soil are negatively correlated with the salt content increase. To further explore the failure mechanism, the study examined the damage and failure behavior of saturated saline frozen soil, along with the absorption energy in the failure process. According to the test results, the saturated saline frozen soil was similar to a particle-reinforced composite. Subsequently, the debonding damage of the ice–salt eutectic and the mechanical–chemical damage of the soil matrix were considered. The test results could be predicted accurately from the results of the model, verifying that the influences of the salt content and strain rate are reasonably considered by the constructed model.

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Section: Shpb Testmentioning

confidence: 99%

Section: Shpb Testmentioning

confidence: 99%

Section: Shpb Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic constitutive model of saturated saline frozen soil under uniaxial impact loading

Shang,

Zhu,

et al. 2024

International Journal of Damage Mechanics

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“…Ma [8] found through experiments that as the number of prefabricated cracks gradually increased, the energy consumed during the damage and destruction process of the specimen also gradually decreased. Liang [9] believed that the absorbed energy of the sample showed a significant increasing trend with the continuous increase and increase in temperature and impact velocity. Zhou [10] discussed the damage mechanism of the specimen from the energy point of view through impact and dynamic experiments.…”

Section: Introductionmentioning

confidence: 99%

Energy Dissipation and Electromagnetic Radiation Response of Sandstone Samples with a Pre-Existing Crack of Various Inclinations under an Impact Load

Zang

Niu

et al. 2021

Minerals

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Various primary fissures and defects are widely present in a rock mass and have a significant impact on the stability of the rock mass. We studied the influence of the crack inclination angle on the energy dissipation and electromagnetic radiation (EMR) response of sandstone under an impact load. Impact tests were conducted on red sandstone samples with different inclination angles, in addition to test energy dissipation and EMR signals. The results showed that as the energy of the stress wave increased, the energy consumption density and damage variables of the sample gradually increased, and the electromagnetic radiation energy also increased. As the crack inclination increased, the energy consumption density first decreased and then increased, while the damage variable and electromagnetic radiation energy first increased and then decreased. In the process of impact damage, the main frequency of EMR was 0~5 kHz. As the energy of the stress wave increased, the dominant frequency band of the main frequency expanded from low frequency to high frequency, and the amplitude signal gradually increased; the α = 45° specimen frequency domain was the widest, and the amplitude was the largest. The crack inclination significantly changed the failure state of the sample, resulting in changes in the energy dissipation and the electromagnetic radiation response of the sample.

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Dynamic behavior of frozen soil with prefabricated holes under uniaxial impact loading

Zhu,

Shangguan,

Zhang

et al. 2023

Meccanica

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Energy absorption characteristics and theoretical analysis of frozen clay with pre-existing cracks under uniaxial compressive impact load

Cited by 21 publications

References 21 publications

Dynamic constitutive model of saturated saline frozen soil under uniaxial impact loading

Dynamic constitutive model of saturated saline frozen soil under uniaxial impact loading

Energy Dissipation and Electromagnetic Radiation Response of Sandstone Samples with a Pre-Existing Crack of Various Inclinations under an Impact Load

Dynamic behavior of frozen soil with prefabricated holes under uniaxial impact loading

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