Results 11 to 20 of about 9,186,870 (338)

Numerical simulation of rock-breaking and influence laws of dynamic load parameters during axial-torsional coupled impact drilling with a single PDC cutter

Petroleum Science, 2023
Yan Xi, Haoyu Wang, Chunhe Zha, Jun Yu Li, Gong-hui Liu, Bo Guo   +5 more
semanticscholar   +2 more sources

Biomechanical tradeoffs in stroller running: Reduced vertical impact loading and increased torsional injury risk. [PDF]

PLoS One
Mahoney JM, Lista A, Carbajal D, Infantolino BW, Altman-Singles AR.   +4 more
europepmc   +2 more sources

Impact Resisting Mechanism of Tension-Torsion Coupling Metamaterials

International Journal of Mechanical Sciences, 2023
Lei Meng, Mingzhe Zhong, Yushan Gao, Tong Gao, Yuliang Hou, Jihong Zhu, Piotr Breitkopf, Wei‐Hong Zhang   +7 more
openalex   +2 more sources

Lateral-torsional coupled vibration analysis of a bolted joint rotor system considering rotor-stator rub-impact

Results in Engineering
The 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, Bo Yang, Chuanmei Wen, Bing Li, Xingliang Cai   +4 more
doaj   +2 more sources

Stick-slip vibration characteristic of PDC bit cutting composite strata based on discrete element method

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, Li WANG, Yong WANG, Xuqian DOU, Zhizai JIE, Hongyan CHEN, Mingqiang LI   +6 more
doaj   +1 more source

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, Trine M. Rudlang, Mikkel Fode, Peter B. Østergren, Jens Sønksen, Dana A. Ohl, Christian Fuglesang S. Jensen   +6 more
openaire   +6 more sources

Research on torsional stiffness of flexspline-flexible bearing contact pair in harmonic drive based on macro-micro scale modeling

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
doaj   +1 more source

Linear Longitudinal Strength Analysis of a Multipurpose Cargo Ship under Combined Bending and Torsional Load

Journal of Marine Science and Engineering, 2023
Cargo ships with wide hatches usually have thin walls and limited torsional rigidity. Consequently, conducting a comprehensive torsional analysis is important because these loads can exert a significant impact. In this paper, the structural response of a
Joynal Abedin, Francis Franklin, S. M. Ikhtiar Mahmud   +2 more
doaj   +1 more source

Ovarian torsion: Factors impacting diagnosis [PDF]

Shelby Michaelson
openalex   +2 more sources

Numerical simulation analysis of hybrid impact cutting and its comparison with torsional impact cutting

, 2020
Hybrid impact drilling is a new drilling method proposed in recent years, the PDC (polycrystalline diamond compact) bit impacts the rock in torsional and axial directions during its rotation.
Yijin Zeng, Weiji Liu, S. Ding, Xiaohua Zhu   +3 more
semanticscholar   +1 more source