不同循环加载序列导致板岩力学响应差异的现象与解释

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Earth Sciences Pub Date : 2025-01-10 DOI:10.1007/s12665-024-12083-2

Zhengyang Song, Zhen Yang

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引用次数: 0

摘要

本文设计了两种差分循环加载模式，每种模式都考虑了五组不同加卸载速率的组合。即模式a：从快加载-慢卸载过渡到慢加载-快卸载。模式b：从慢加载-快卸载过渡到快加载-慢卸载。测试的岩石样品为板岩，具有5种不同的层理角度（0°、30°、45°、60°、90°）。试验结果表明，加载顺序相反的两种DCL模式会产生不同的耗能特性。与模式b相比，从快加载-慢卸载到慢加载-快卸载的模式a的归一化耗散能下降幅度更大，同时保持更小的残余轴向应变率。加载/卸载速率对相移幅度的影响与应用的DCL序列无关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Differential cyclic loading sequences induced discrepancies in mechanical responses of slate: phenomena and interpretations

This article designed two differential cyclic loading (DCL) modes, each considering the combinations of five groups of different loading and unloading rates. Namely, Mode a: transition from fast-loading-slow-unloading to slow-loading-fast-unloading. Mode b: transition from slow-loading-fast-unloading to fast-loading-slow-unloading. The rock samples tested are slate with five different bedding angles (0°, 30°, 45°, 60°, 90°). The testing results indicate that the two DCL modes with opposite loading sequences can yield different characteristics of energy dissipation. The Mode a which varies fast-loading-slow-unloading to slow-loading-fast-unloading exhibits a sharper decline in normalized dissipated energy and simultaneously holds a smaller residual axial strain rate when compared with Mode b. The impact of loading/unloading rates on magnitudes of phase shift is independent of the applied DCL sequences.

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.