Results 11 to 20 of about 14,450 (256)

Theoretical and Experimental Study on the Transient Time-Frequency Characteristics of the Bending-Torsional Coupling Motions of a Rub-Impact Dual-Rotor System

open access: yesShock 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
doaj   +1 more source

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

open access: yesFrontiers 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

open access: yesJournal 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   +2 more
doaj   +1 more source

Homologous basic helix–loop–helix transcription factors induce distinct deformations of torsionally-stressed DNA: a potential transcription regulation mechanism

open access: yesQRB Discovery, 2022
Changing torsional restraints on DNA is essential for the regulation of transcription. Torsional stress, introduced by RNA polymerase, can propagate along chromatin facilitating topological transitions and modulating the specific binding of transcription
Johanna Hörberg   +2 more
doaj   +1 more source

Study on Rock-Breaking Mechanisms of Multi-Dimensional Impact Cutting Based on PDC Cutter Numerical Simulation

open access: yesShiyou jixie, 2023
The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue   +5 more
doaj  

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

open access: yesMachines, 2022
In order to meet requirements in machine design, modularity is often brought forward as a way to cope with load variations and adaptability of the architecture.
David van Os   +4 more
doaj   +1 more source

Effectiveness of flange plates on torsional behaviors of ultra-high-performance fiber-reinforced concrete hollow beams

open access: yesDevelopments in the Built Environment, 2023
This study investigates the effectiveness of flanges with various types of stirrup and cross-sectional dimensions on the torsional behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC) hollow beams.
Jiale Zhou   +4 more
doaj   +1 more source

Impact of Aggregated PV on Subsynchronous Torsional Interaction [PDF]

open access: yes2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 2020
This paper investigates induced oscillation (specifically subsynchronous torsional interactions) in power systems arising from photovoltaic (PV) power modulation. Time domain simulations of a modified IEEE first-benchmark system are presented and analyzed.
Rasel Mahmud, Andy Hoke, Jonathan White
openaire   +1 more source

Study on the torsional movement of a reed valve in a rotary compressor

open access: yesAdvances in Mechanical Engineering, 2018
Torsional movement makes the motion of a reed valve very complex and unmanageable in a rotary compressor. However, there is little information on the torsional movement of the reed valve in comparison to the valve displacement and velocity in the ...
Xiaoling Yu   +5 more
doaj   +1 more source

Simulation on compound percussive drilling: Estimation based on multidimensional impact cutting with a single cutter

open access: yesEnergy Reports, 2021
In the present study, a 3D FEM of compound percussive system considering a loading–unloading cycle was employed to simulate the dynamic single-cutter-rock interaction.
Yumei Li   +4 more
doaj   +1 more source

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