Results 1 to 10 of about 16,165 (285)
Impact of intelligent phacoemulsification software on torsional phacoemulsification surgery
Clinical Ophthalmology, 2012 Silay Canturk Ugurbas, Sinan Caliskan, Atilla Alpay, Suat Hayri UgurbasDepartment of Ophthalmology, Bulent Ecevit University School of Medicine, Zonguldak, TurkeyBackground: The purpose of this study was to compare phacoemulsification energy parameters ...
Canturk Ugurbas S +3 more
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Design of a New Type of Torsional Impactor and Analysis of Its Impact Performance
Applied Sciences, 2021 In view of the stick-slip phenomenon in deep and hard rock drilling, a new type of torsional impactor that can provide torsional impact vibration was designed.
Xianfeng Tan +5 more
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Impact of load dynamics on torsional interactions [PDF]
2016 Power Systems Computation Conference (PSCC), 2016 This paper evaluates the impact of load dynamics on torsional interactions by considering a mix of static and dynamic loads aggregated at the bulk transmission level. This is essential to investigate the importance of detailed load modelling for subsynchronous resonance (SSR) studies to accurately assess damping contribution and capture system dynamics.
Papiya Dattaray +5 more
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Shock and Vibration, 2021 This paper focuses on the fault characteristics of the bending and torsional motions of a rub-impact dual-rotor system caused by aircraft flight maneuvers.
Tian Gao, Shuqian Cao, Tiancheng Zhang
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The rock breaking and ROP increase mechanisms for single-tooth torsional impact cutting using DEM
Petroleum Science, 2019 Torsional impact drilling is a new technology which has the advantages of high rock-breaking efficiency and a high rate of penetration (ROP). So far, there is no in-depth understanding of the rock-breaking mechanism for the ROP increase from torsional ...
Xiao-Hua Zhu, Yun-Xu Luo, Wei-ji Liu
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Analysis of the effects of torsional impact tools on drill string stick–slip vibration
Energy Exploration & ExploitationTorsional impactor is widely used in deep and ultra-deep wells because it can suppress stick–slip vibration and increase ROP. As the direct factor affecting torsional impactor effect, it's working parameters study is still not sufficient.
Chaoyi She +5 more
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Results in EngineeringThe interaction of a rotor with a stationary part is a serious malfunction that could lead to a failure. The past studies on rotor-stator rub-impact behaviors mainly addressed the vibrations along the lateral directions, where the torsional vibration of ...
Yuqi Li +4 more
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The Impact of Testicular Torsion on Testicular Function [PDF]
The World Journal of Men's Health, 2020 Torsion of the spermatic cord is a urological emergency that must be treated with acute surgery. Possible long-term effects of torsion on testicular function are controversial. This review aims to address the impact of testicular torsion (TT) on the endocrine- and exocrine-function of the testis, including possible negative effects of torsion on the ...
Frederik M. Jacobsen +6 more
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Meikuang Anquan, 2023 For the problem of stick-slip vibration caused by hard rock formation in the process of drill bit penetrating in coal mine, and the discrete element method (DEM) was employed to study the rock cutting performance and stick-slip vibration behavior of PDC ...
Jian CHEN +6 more
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Frontiers in Materials, 2023 The flexspline and flexible bearing constitute a critical contact pair in a harmonic drive system, and their torsional stiffness has a significant impact on the performance characteristics manifested by the harmonic drive.
Qiushi Hu, Heng Li, Guang Wang, Lei Li
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