Results 111 to 120 of about 3,116 (278)
Deep Underground Science and Engineering, EarlyView.The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu +4 more
wiley +1 more source
Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
wiley +1 more source
EcoEnergy, EarlyView.An overview of grain boundary engineering in the field of electrocatalysis. ABSTRACT Key electrocatalytic reactions such as HER, OER, ORR, CO2RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs)
Jingyu Gao +8 more
wiley +1 more source
Analysis and Simulation of Direct Torque Controlled Induction Motor Drive [PDF]
, 2014 The vector control study of an induction motor countenances the decoupled analysis. In this control torque and flux components are independently controlled (just as in dc motor).
mohanty, A, Sahoo, A
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT To enhance the structural robustness of bridges, a rocking arch‐shaped segmental pier with a double sliding system was previously proposed as a low‐cost solution to protect bridges in developing countries. The rocking behavior is triggered by halting the sliding motion, which increases the horizontal load‐bearing capacity and limits ...
Shengming Feng +6 more
wiley +1 more source
Minimization of torque ripple in switched reluctance motor drives using direct instantaneous torque
Torque ripple is an inherent characteristic of switched reluctance motor drives due to its double salient geometry and it is a serious drawback in applications that requiresmooth torque and high dynamic performances.
Blanqué Molina, Balduino +2 more
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, 2023 IEEEDirect torque control, direct instantaneous torque control (DITC), and direct force control strategies have been well applied in bearingless switched reluctance motors (BSRMs), which can obtain good torque and levitation characteristics by hysteresis-
Cao X +5 more
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT In February 2023, a comprehensive series of shaking table tests were conducted at the E‐Defense facility, the world's largest three‐dimensional earthquake simulator, on a full‐scale 10‐story steel moment‐resisting frame supplemented with BRBs.
Jun Fujiwara +9 more
wiley +1 more source
Improved Duty Ratio-Based Direct Torque Control for Open-End Winding Induction Motor Drives
IEEE Open Journal of Industry ApplicationsThis article presents an improved duty-ratio-based direct torque control (Duty-DTC) scheme for open-end winding induction motor (OEWIM) drives. Unlike conventional DTC (CDTC), which applies a single voltage vector over the entire sampling interval, the ...
Kaif Ahmed Lodi +2 more
doaj +1 more source
Applied Element Modelling of Out‐Of‐Plane Instability in Boundary Elements of Thin RC Walls
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Recent earthquakes in Chile (2010) and New Zealand (2011) caused extensive damage to buildings featuring reinforced concrete (RC) structural walls, with observed failure modes including out‐of‐plane instability of slender walls. This buckling‐type response under combined in‐plane and out‐of‐plane loading has also been documented in ...
Andrea Orgnoni +2 more
wiley +1 more source