Results 31 to 40 of about 9,186,870 (338)

Dynamic Behavior of Shafts, Couplings and Working Body of the Machine under Torsional Impact Moment [PDF]

Journal of Applied and Computational Mechanics
In this study, the influence of the torsional rigidity of the connected shafts, couplings and the working body of the machine, as well as the damping capacity of the coupling, on the torsional impact moment generated in the machine transmission is ...
Isa Khalilov, Abdullah H. Sofiyev
doaj   +1 more source

Development and Field Test of the Same-Frequency Different-Phase Compound Impact Tool

Shiyou jixie, 2023
A same-frequency different-phase compound impact tool was developed to improve the rock-breaking efficiency of PDC bits in hard formations, increase the penetration depth of cutters, and eliminate the “stick-slip” phenomenon of the downhole bit.The ...
Ye Daohui, Chen Dongfang, Xiao Ping, Zhang Ruiyao, Zhang Guangyu, Qin Fei   +5 more
doaj  

Torsional Stiffness Analysis Based on Lagrangian Method for Precision Rotary Vector Reducer with Involute Variable Tooth Thickness

Applied Sciences, 2022
The precision rotary vector reducer with involute variable tooth thickness (PRVT) is a high-performance precision transmission device, which is very suitable for aerospace, medical machinery, industrial robots, automation equipment, and other fields, and
Le Chang, Yucheng Huang, Najeeb Ullah, Ling Zhu, Zhenyu Lv, Yuanlin Jing   +5 more
doaj   +1 more source

Impact torsional behavior and strengthening of reinforced concrete spandrel beams

Case Studies in Construction Materials, 2023
The exterior L-shaped spandrel beams frequently experience various forms of eccentric loading that induce torsional stress when used in parking structures.
Noor Ayaad, Nazar Oukaili
doaj   +1 more source

Stability Analysis of Electromechanical Coupling Torsional Vibration for Wheel-Side Direct-Driven Transmission System under Transmission Clearance and Motor Excitation

World Electric Vehicle Journal, 2022
The wheel-side direct-driven transmission system (WDTS) is a new intelligent transmission technology, which has significant advantages in high-efficiency and few malfunctions for the electric bus.
Jinyong Ju, Yufei Liu, Chunrui Zhang
doaj   +1 more source

Experimental investigation of torsional vibration isolation using Magneto Rheological Elastomer

MATEC Web of Conferences, 2018
Rotating systems suffer from lateral and torsional vibrations which have detrimental effect on the roto-dynamic performance. Many available technologies such as vibration isolators and vibration absorbers deal with the torsional vibrations to a certain ...
Praveen Shenoy K, Singh Abhishek Kumar, Sai Aditya Raman K, Gangadharan K. V.   +3 more
doaj   +2 more sources

Numerical Simulation on Effects of Phase Difference on Rock-Breaking Efficiency Under Compound Impact

Shiyou jixie, 2023
Previous researches on rock-breaking efficiency under compound impact neglect the effects of the phase difference between axial and torsional impact loads.Therefor,such effects were discussed.The single-cutter rock-breaking numerical model of PDC bit ...
Xi Yan, Wang Haoyu, Qi Yue, Tian Yudong, Li Jun, Wang Wei   +5 more
doaj  

Plasma extrachromosomal circular DNA as a biomarker in EGFR‐targeted therapy of non‐small cell lung cancer

Molecular Oncology, EarlyView.
Detection of extrachromosomal circular DNA (eccDNA) in plasma samples from EGFR‐mutated non‐small cell lung cancer patients. Plasma was collected before and during treatment with the EGFR‐tyrosine kinase inhibitor osimertinib. Plasma eccDNA was detected in all cancer samples, and the presence of the EGFR gene on eccDNA serves as a potential biomarker ...
Simone Stensgaard, Sarmad Mehmood, Eva Boysen Fynboe Ebert, Peter Meldgaard, Anindya Dutta, Boe S. Sorensen   +5 more
wiley   +1 more source

Torsional Resonance Identification in Turbine-Generator Shaft Due to the Operation of Electric Arc Furnaces at Steel Mills in Bangladesh Power System

IEEE Access, 2023
Many steel mills in Bangladesh use electric arc furnaces (EAFs) that can impact the generating units of the country’s power system. The EAFs can cause power quality problems, such as the injection of the sub-synchronous frequencies (SSFs), which ...
Md. Minarul Islam, Abdul Hasib Chowdhury, Md. Shafiullah, Kashem M. Muttaqi, Danny Sutanto, Taha Selim Ustun   +5 more
doaj   +1 more source

Investigation of Lumped-Mass Method on Coupled Torsional-longitudinal Vibrations for a Marine Propulsion Shaft with Impact Factors

Journal of Marine Science and Engineering, 2019
Severe vibrations of the marine propulsion shaft can evidently affect the dynamical response of the propulsion system and degrade the performance of a ship.
Qianwen Huang, Haiyun Liu, Jiyin Cao
semanticscholar   +1 more source