Abstract
Understanding dynamic mechanical response of rocks subjected to extreme loadings is necessary in rock engineering analysis and design. The dynamic increase factor (DIF), is usually defined as the ratio of the dynamic strength to the quasi-static strength in uniaxial compression or tension, which has been widely accepted as an important parameter to measure rate sensitivity of brittle materials. This paper summarizes the features of rate dependency of rocks and systematically reviews the expressions for the relationship between strain rates and mechanical strength of geo-materials. In addition, based on a number of experimental results, an aggregated DIF for compressive and tensile strength of rocks is proposed, which can provide a good prediction of rock strength over a wide range of strain rates.
| Original language | English |
|---|---|
| Title of host publication | Rock Dynamics – Experiments, Theories and Applications - Proceedings of the 3rd International Conference on Rock Dynamics and Applications, ROCDYN-3 2018 |
| Editors | Xing Li, Charlie C. Li, Zong-Xian Zhang |
| Publisher | CRC Press |
| Pages | 169-174 |
| Number of pages | 6 |
| ISBN (Print) | 9780815396673 |
| Publication status | Published - 1 Jan 2018 |
| Event | International Conference on Rock Dynamics and Applications (RocDyn) 2018 - Trondheim, Norway Duration: 25 Jun 2018 → 29 Jun 2018 Conference number: 3rd |
Conference
| Conference | International Conference on Rock Dynamics and Applications (RocDyn) 2018 |
|---|---|
| Abbreviated title | RocDyn 2018 |
| Country | Norway |
| City | Trondheim |
| Period | 25/06/18 → 29/06/18 |
Cite this
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Dynamic increase factors of rock strength. / Liu, K.; Zhang, Q. B.; Zhao, J.
Rock Dynamics – Experiments, Theories and Applications - Proceedings of the 3rd International Conference on Rock Dynamics and Applications, ROCDYN-3 2018. ed. / Xing Li; Charlie C. Li; Zong-Xian Zhang. CRC Press, 2018. p. 169-174.Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other
TY - GEN
T1 - Dynamic increase factors of rock strength
AU - Liu, K.
AU - Zhang, Q. B.
AU - Zhao, J.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Understanding dynamic mechanical response of rocks subjected to extreme loadings is necessary in rock engineering analysis and design. The dynamic increase factor (DIF), is usually defined as the ratio of the dynamic strength to the quasi-static strength in uniaxial compression or tension, which has been widely accepted as an important parameter to measure rate sensitivity of brittle materials. This paper summarizes the features of rate dependency of rocks and systematically reviews the expressions for the relationship between strain rates and mechanical strength of geo-materials. In addition, based on a number of experimental results, an aggregated DIF for compressive and tensile strength of rocks is proposed, which can provide a good prediction of rock strength over a wide range of strain rates.
AB - Understanding dynamic mechanical response of rocks subjected to extreme loadings is necessary in rock engineering analysis and design. The dynamic increase factor (DIF), is usually defined as the ratio of the dynamic strength to the quasi-static strength in uniaxial compression or tension, which has been widely accepted as an important parameter to measure rate sensitivity of brittle materials. This paper summarizes the features of rate dependency of rocks and systematically reviews the expressions for the relationship between strain rates and mechanical strength of geo-materials. In addition, based on a number of experimental results, an aggregated DIF for compressive and tensile strength of rocks is proposed, which can provide a good prediction of rock strength over a wide range of strain rates.
UR - http://www.scopus.com/inward/record.url?scp=85059540342&partnerID=8YFLogxK
M3 - Conference Paper
AN - SCOPUS:85059540342
SN - 9780815396673
SP - 169
EP - 174
BT - Rock Dynamics – Experiments, Theories and Applications - Proceedings of the 3rd International Conference on Rock Dynamics and Applications, ROCDYN-3 2018
A2 - Li, Xing
A2 - Li, Charlie C.
A2 - Zhang, Zong-Xian
PB - CRC Press
ER -