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Gaoke Ma, Hongyun Jia, Jichun Xiao and Lina Hao
Exoskeletal robots are of critical importance in the domain of mechanical boosting. The pneumatic artificial muscle (PAM) is commonly used as a flexible actuator in exoskeletal robots designed for upper limbs due to its high power-to-weight ratio, confor...
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Shanzhen Xu, Xiang Tian, Cheng Wang, Youning Qin, Xiaohu Lin, Jingxuan Zhu, Xiaodong Sun and Tiandong Huang
For parallel hybrid electric vehicles (HEVs), the clutch serves as a vital enabling actuator element during mode transitions. The expected drivability and smoothness of parallel HEVs are difficult to be achieve owing to the neglect of clutch-torque-induc...
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Han-Sol Choi, Dong-Yeon Kim, Jeong-Hoon Park, Jae Hyuk Lim and Tae Seong Jang
In this study, a passive truss-link mechanism applicable to large-scale deployable structures was designed to achieve successful deployment in space. First, we simplified the selected truss-link mechanisms to the two-dimensional geometry and calculated t...
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Hua Tong and Yongbo Shao
In recent years, trenchless horizontal directional drilling (HDD) technology has developed rapidly towards the direction of large pipe diameter and long span. During construction, the buckling deformation and large drag torque of the drillstring (DS) are...
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Zhi Qu, Gaofei Zhang, Ziyang Meng, Kai Xu, Ruiqin Xu and Jiaojiao Di
Addressing the problems of insurmountable unknown frictional disturbance and balancing the trade-off between high maneuverability and stability during attitude maneuver are important in low-cost miniaturized single control moment gyro clusters (SGCMGs) f...
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Myeong-Ho Song, Taek-Kun Nam and Jae-ung Lee
The reliability of propulsion shafting systems is a major concern for ocean-going vessels because mid-ocean repairs can be time-consuming and spare parts must be available. To address this concern, vibration modeling and experimental measurements were co...
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Tilman Raphael Schröder, Hans-Josef Dohmen, Dieter Brillert and Friedrich-Karl Benra
In the side-chambers of radial turbomachinery, which are rotor?stator cavities, complex flow patterns develop that contribute substantially to axial thrust on the shaft and frictional torque on the rotor. Moreover, leakage flow through the side-chambers ...
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Mary De la Cruz, Ramiro Gonzalez, Jesus A. Gomez, Atilano Mendoza and Javier A. Ortega
A modular torque measuring instrument capable of performing tapping torque tests (TTT) according to the ASTM D-5619 standard was designed, developed, and validated. With this new instrument, the performance of different lubricants can be evaluated in ter...
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Bo Hu, Dieter Brillert, Hans Josef Dohmen and Friedrich-Karl Benra
In radial pumps and turbines, the centrifugal through-flow in both the front and the back chambers is quite common. It strongly impacts the core swirl ratio, pressure distribution, axial thrust and frictional torque. In order to investigate these relatio...
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Bo Hu, Dieter Brillert, Hans Josef Dohmen and Friedrich-Karl Benra
Daily and Nece distinguished four flow regimes in an enclosed rotor-stator cavity, which are dependent on the circumferential Reynolds number and dimensionless axial gap width. A diagram of the different flow regimes including the respective mean profile...
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