Results 211 to 220 of about 31,902 (254)
Some of the next articles are maybe not open access.
Applied Mechanics and Materials, 2011
In order to study on rock damage caused by the confining pressure unloading, different unloading rates have been adopted in tests on the rock under the constant axial load. Emphasis has been laid on discussing influences of different unloading rates on the elastic modulus, rock strength and failure mode of the rock.
Wen Ge Chai, Wen Li Li
openaire +1 more source
In order to study on rock damage caused by the confining pressure unloading, different unloading rates have been adopted in tests on the rock under the constant axial load. Emphasis has been laid on discussing influences of different unloading rates on the elastic modulus, rock strength and failure mode of the rock.
Wen Ge Chai, Wen Li Li
openaire +1 more source
Impact of Direction of Unloading Influence on Template Rate of Perceived Exertion
Journal of Strength and Conditioning Research, 2018Abstract Greer, BK, Young, PR, Thompson, B, Rickert, BJ, and Moran, MF. Impact of direction of unloading influence on template rate of perceived exertion. J Strength Cond Res 32(12): 3407–3413, 2018—It is suggested that exercisers engage in a process of teleoanticipation and create an exercise template based on previous experience with the ...
Beau Kjerulf, Greer +4 more
openaire +2 more sources
Numerical Study of the Influences of Dynamic Loading and Unloading Rates on Fracturing
57th U.S. Rock Mechanics/Geomechanics Symposium, 2023ABSTRACT Dynamic loading offers the potential to induce densely connected fractured pore space over large bulk volumes of impermeable rock. An understanding of the impacts of the dynamic loading and unloading rates on the resulting fracturing can guide the design of discharge technologies.
Wen Cao, Rami M. Younis
openaire +1 more source
Rock Mechanics and Rock Engineering, 2013
Rockburst is a sudden and violent failure of rocks and it often occurs in hard rocks in highly stressed ground. Strainburst is classified as one type of rockburst and it often occurs in rocks near or at the excavation boundary. Deep insight into the strainburst phenomenon is essential for safe underground construction at depth.
X. G. Zhao +7 more
openaire +1 more source
Rockburst is a sudden and violent failure of rocks and it often occurs in hard rocks in highly stressed ground. Strainburst is classified as one type of rockburst and it often occurs in rocks near or at the excavation boundary. Deep insight into the strainburst phenomenon is essential for safe underground construction at depth.
X. G. Zhao +7 more
openaire +1 more source
Effects of Unloading and Strain Rate on Headform Impact Simulation
SAE Technical Paper Series, 2004<div class="htmlview paragraph">The current paper presents improvements of a previous single-degree-of-freedom lumped parameter model with a nonlinear spring that could be used for preliminary design of headform impact safety countermeasures for normal impact with negligible headform rotation.</div> <div class="htmlview paragraph">The
Anindya Deb +2 more
openaire +1 more source
SPE Trinidad and Tobago Section Energy Resources Conference, 2021
Abstract The unconventional resources development has grown tremendously as a result of the advancement in horizontal drilling technology coupled with hydraulic fracturing. However, as more wells are drilled and fractured close to each other, frac hits have become a major challenge in these wells.
openaire +1 more source
Abstract The unconventional resources development has grown tremendously as a result of the advancement in horizontal drilling technology coupled with hydraulic fracturing. However, as more wells are drilled and fractured close to each other, frac hits have become a major challenge in these wells.
openaire +1 more source
The influence of the unloading rate on creep recovery of force transducers
Measurement, 2018Abstract This paper presents a study of the effect of unloading rate on the creep recovery of force transducers. The creep values increase with increase loading rate and this increasing phenomenon follows a Natural Logarithm function. The creep is highly dependent on the unloading rate from 0.5 mm/min to 5 mm/min while above 5 mm/min up to 20 mm/min ...
K.M. Khaled, G.M. Mahmoud
openaire +1 more source
Gas Condensate Well Unloading Critical Rate
SPE Annual Technical Conference and Exhibition, 2013Abstract Profile of critical rate for 106 vertical wells producing from high pressure formations has been used to determine an unloading critical rate for well producing gas and condensate. The evaluation involved loaded, questionable and unloaded wells.
openaire +1 more source
Modeling Aspects of a Rate-Controlled Seizure in an Unloaded Journal Bearing
Tribology Transactions, 1998Thermally induced seizure can lead to a rapid catastrophic bearing failure. An analytical model was developed to study this phenomenon in an unloaded journal bearing. The model consisted of two concentric cylinders containing lubricant in which the inner one rotates at a specified rpm and the outer cylinder is stationary.
J. Y. Jang +2 more
openaire +1 more source
Effect of unloading on crack growth rate of Zr–2.5Nb tubes
Journal of Nuclear Materials, 2010Abstract Crack growth rates (CGRs) of a heat-treated Zr–2.5Nb tube were determined using compact tension specimens with 60 ppm H at 250 °C under the constant and cyclic loads where the load ratio R was changed from 0.13 to 0.68. CGR was the highest under the constant load and decreased under the cyclic load with decreasing R despite a decrease ...
Young Suk Kim, Vidas Makarevicius
openaire +1 more source