What question did this study set out to answer?

This research aims to understand the mechanical behavior of pre-cracked sandstone under cyclic impact loading, focusing on energy damage modeling and stability.

May 1, 2026Rock Mechanics and Rock EngineeringOpen Access

Mechanical Response Characteristics and Progressive Instability Mechanical Model of Pre-cracked Sandstone Under Cyclic Impact Load

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Authors

RXRijie XuAnhui University of Science and Technology KYKe YangAnhui Jianzhu University WLWenjie LiuAnhui University of Science and Technology

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Implication

Randomized trial investigates mechanical responses and damage in pre-cracked rocks under cyclic impact loads, suggesting stability control measures.

Key Points

This research aims to understand the mechanical behavior of pre-cracked sandstone under cyclic impact loading, focusing on energy damage modeling and stability.
Conducted constant-amplitude cyclic impact tests using the split Hopkinson pressure bar system on pre-cracked red sandstone.
Analyzed dynamic response, fragment distribution, and energy dissipation characteristics of the specimens under varying conditions.
Established a progressive instability mechanical model based on experimental findings.
Under cyclic impact loading, peak stress decreased with more cycles, showing a V-shaped distribution linked to crack angles.
Energy dissipation followed an initial slow absorption phase, accelerating in later cycles; integrity loss minimized this initial phase.
Damage accumulation was nonlinear, peaking at a 30° crack angle, while higher angles led to decreased damage.

Cite This Study

Xu et al. (2026) studied this question.

synapsesocial.com/papers/69f44223967e944ac5565f40 https://doi.org/10.1007/s00603-026-05490-3

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May 1, 2026Rock Mechanics and Rock EngineeringOpen Access

Mechanical Response Characteristics and Progressive Instability Mechanical Model of Pre-cracked Sandstone Under Cyclic Impact Load

View Full Paper

Ask AI

Bookmark

Authors

RXRijie XuAnhui University of Science and Technology KYKe YangAnhui Jianzhu University WLWenjie LiuAnhui University of Science and Technology

Discussion

Member takes

Implication

Randomized trial investigates mechanical responses and damage in pre-cracked rocks under cyclic impact loads, suggesting stability control measures.

Key Points

This research aims to understand the mechanical behavior of pre-cracked sandstone under cyclic impact loading, focusing on energy damage modeling and stability.
Conducted constant-amplitude cyclic impact tests using the split Hopkinson pressure bar system on pre-cracked red sandstone.
Analyzed dynamic response, fragment distribution, and energy dissipation characteristics of the specimens under varying conditions.
Established a progressive instability mechanical model based on experimental findings.
Under cyclic impact loading, peak stress decreased with more cycles, showing a V-shaped distribution linked to crack angles.
Energy dissipation followed an initial slow absorption phase, accelerating in later cycles; integrity loss minimized this initial phase.
Damage accumulation was nonlinear, peaking at a 30° crack angle, while higher angles led to decreased damage.

Cite This Study

Xu et al. (2026) studied this question.

synapsesocial.com/papers/69f44223967e944ac5565f40 https://doi.org/10.1007/s00603-026-05490-3

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