Results 41 to 50 of about 15,186,759 (164)

Design and Performance Analysis of Spherical Sealing Structure of Flexible Drill Pipe

Shiyou jixie, 2022
Considering that the spherical sealing of flexible drill pipe cannot be realized effectively using O-ring, a specific spherical sealing structure of flexible drill pipe was designed, and a three-dimensional finite element model of the spherical sealing ...
Wang Wei, Jia Jianbo, Zhang Liangzhen, Guan Feng, Wang Hongliang, Liu Xianming   +5 more
doaj  

Research on H7006C Angular Contact Ball Bearing Slipping Behavior under Operating Conditions

Lubricants, 2023
During operation, angular contact ball bearings exhibit slipping behavior, which accelerates bearing wear and reduces the bearing’s overall service life.
Fang Yang, Mingyang Song, Xiqiang Ma, Nan Guo, Yujun Xue   +4 more
doaj   +1 more source

Static modeling and experimental analysis of three-degree-of-freedom pneumatic flexible arm

AIP Advances, 2023
Aiming at the problems of weak driving ability and low torsional stiffness of a pneumatic flexible arm, a new type of pneumatic flexible arm is developed using three fan-shaped driving cavities and convex–concave nested constraint ring structure.
Xia Wang, Dexu Geng, He Peng, Lizhong Zhang   +3 more
doaj   +1 more source

An analytical, mathematical annuloplasty ring curvature model for planning of valve-in-ring transcatheter mitral valve replacementCentral MessagePerspective

JTCVS Techniques, 2023
Objectives: An increasing number of high-risk patients with previous mitral valve annuloplasty require transcatheter mitral valve replacement due to recurrent regurgitation. Annulus dilation with a transcatheter balloon is often performed before valve-in-
Matthew H. Park, MS, Mateo Marin-Cuartas, MD, Mark Sellke, PhD, Pearly K. Pandya, MS, Yuanjia Zhu, MD, PhD, Robert J. Wilkerson, BS, David M. Holzhey, MD, PhD, Michael A. Borger, MD, PhD, Y. Joseph Woo, MD   +8 more
doaj   +1 more source

Model Development and Stability Analysis for a Turbocharger Rotor System under Multi-Field Coupled Forces [PDF]

Automotive turbochargers have been widely applied in vehicles in order to increase the power output of internal combustion engines by increasing the air to fuel ratio entering the piston cylinders.
Zhang, Hao
core   +3 more sources

Dynamic Finite Element Analysis of a New Type Flexible Rock Shed under the Impact of Rock Block and Improving the Design

Shock and Vibration, 2018
A 1:1 flexible rock shed made of flexible nets and steel-vaulted structure is manufactured and tested for functional evaluation with impact experiment previously.
Lianming Cui, Min Wang, Tangrong Yu
doaj   +1 more source

Analysis of Contact Mechanical Characteristics of Flexible Parts in Harmonic Gear Reducer

Shock and Vibration, 2021
Harmonic gear reducer is widely used in industrial robots, aerospace, optics, and other high-end fields. The failure of harmonic gear reducer is mainly caused by the damage of flexible bearing and flexspline of thin-walled vulnerable components. To study
Fanjie Li, Xiaopeng Li, Yajing Guo, Dongyang Shang   +3 more
doaj   +1 more source

Study on the mechanical characteristics of a fibre reinforced flexible pipe under radial compression loads

Frontiers in Materials, 2023
Fibre reinforced flexible pipes are subjected to radial compression loads caused by the tensioner during pipe laying, which may lead to excessive deformation or even damage of the pipe.
Zhenwen Sun, Weiping Huang, Hailong Lu, Jun Yan, Yuanchao Yin, Yufeng Bu   +5 more
doaj   +1 more source

The Analysis and Modeling of the Synthetical Meshing Stiffness of Inner Gearing considering the Flexible Inner Ring Gear [PDF]

Shock and Vibration, 2019
As a key part of vibration generation and transmission of planetary gear transmissions, thin‐walled inner ring gear deforms under the influence of meshing excitation and seriously affects the reliability and fatigue life of the transmission system.
Shengyang Hu, Zongde Fang
openaire   +2 more sources

Electromagnetic Schell-model sources generating far fields with stable and flexible concentric rings profiles

Optics Express, 2016
A class of electromagnetic sources with multi-cosine Gaussian Schell-model correlation function is introduced. The realizability conditions for such sources and the beam conditions for the beams generated by them are established. Analytical formulas for the cross-spectral density matrix of such beams propagating in free space are derived and used to ...
Zhangrong, Mei, Olga, Korotkova
openaire   +2 more sources