Results 11 to 20 of about 1,104,488 (305)

Three-dimensional strength criterion for rocks: A review

open access: yesEnergy Reviews
Deep rocks are typically under a true-triaxial stress state. The strength of deep rock is thus dictated by both the direction and magnitude of principal stresses.
Jiacun Liu   +4 more
doaj   +3 more sources

Strength analysis of structural elements and metal-composite joints of a flying vehicle

open access: yesКосмические аппараты и технологии, 2020
The strength and load-bearing capacity analyses results for flying vehicle typical structural elements and joints are presented in the paper. Calculations were made with the use of nonlinear finite element method, implemented in software NASTRAN and ...
V. I. Grishin   +4 more
doaj   +1 more source

On the convergence of cluster expansions for polymer gases [PDF]

open access: yes, 2010
We compare the different convergence criteria available for cluster expansions of polymer gases subjected to hard-core exclusions, with emphasis on polymers defined as finite subsets of a countable set (e.g.
A. Bovier   +22 more
core   +2 more sources

Smoothed Podgórski Strength Criterion

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract A modification of the Podgórski limit state criterion is proposed in order to smoothen the plasticity surface allowing for application of the yield function in plastic evolution law. Convexity of the potential is discussed and calibration of five material parameters is carried out using common experimental tests, while two ...
Aleksander Szwed, Inez Kaminska
openaire   +1 more source

Strength Criterion of Rocks

open access: yesSoils and Foundations, 1980
ABSTRACT To investigate the strength characteristics of soft rocks, consolidated-drained triaxial compression tests were performed with mudstones, siltstones, tuff, weathered granite and so on. Maximum stress of applied confining pressure was about 30 MPa.
Ryunoshin Yoshinaka, Tadashi Yamabe
openaire   +2 more sources

Fracture Characteristics and Anisotropic Strength Criterion of Bedded Sandstone

open access: yesFrontiers in Earth Science, 2022
Bedded sandstone is classified as sedimentary rock, which is a typical bedded rock with obvious layered structure characteristics. Bedded rocks formed different bedding orientations in the long and complicated geological tectonic evolution and thus have ...
Liang Zhang   +8 more
doaj   +1 more source

Strength criterion for frozen saline sand considering effects of loading rates

open access: yesYantu gongcheng xuebao, 2019
The external conditions such as confining pressures and loading rates have significant influences on the strength of frozen saline soil. A series of conventional triaxial compression tests under different loading rates are carried out for Delingha frozen
GAO Juan 1,2,3, LAI Yuan-ming 1,3, CHANG dan 4, NIU Ya-qiang 5
doaj   +1 more source

Strength criterion of cross-anisotropic Q3 loess

open access: yesYantu gongcheng xuebao, 2018
The structure of loess consisting of vertically extended cracks and horizontally deposited planes makes the cross-anisotropic strength behavior.
XU Ping 1, SHAO Sheng-jun 2, ZHANG Shuai 1
doaj   +1 more source

Dynamic strength criterion for rock-like materials

open access: yesYantu gongcheng xuebao, 2020
The strength of rock-like materials has obvious strain rate effect. Based on the characteristics of uniaxial dynamic strength, a simple strength criterion is proposed, which can uniformly predict the uniaxial strength from quasi-static to dynamic.
HU Jing 1, YAO Yang-ping 2, ZHANG Xue-dong 1, WEI Ying-qi 1, ZHANG Zi-tao 1, CHEN Zu-yu 1
doaj   +1 more source

Empirical strength envelope for shale [PDF]

open access: yes, 2016
Effectively, strength envelope describes behavior of rock when subjected to common stresses in construction, i.e. compressive, triaxial and tensile stresses.
Abdullah, Rini Asnida   +2 more
core   +1 more source

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