Han, Lizhan Liu, Qingdong Gu, Jianfeng
Published in
Chinese Journal of Mechanical Engineering
High-dispersed nanoscale Cu precipitates often contribute to extremely high strength due to precipitation hardening, and whereas usually lead to degraded toughness for especially ferritic steels. Hence, it is important to understand the formation behaviors of the Cu precipitates. High-resolution transmission electron microscopy (TEM) is utilized to...
Liu, Kai Chen, Yining Xu, Jiaqi Wu, Yang Lu, Yonghua Zhao, Dongbiao
Published in
Chinese Journal of Mechanical Engineering
A bionic flexible manipulator driven by pneumatic muscle actuator (PMA) can better reflect the flexibility of the mechanism. Current research on PMA mainly focuses on the modeling and control strategy of the pneumatic manipulator system. Compared with traditional electro-hydraulic actuators, the structure of PMA is simple but possesses strong nonli...
Cui, Hongwei Wang, Qiliang Lian, Zisheng Li, Long
Published in
Chinese Journal of Mechanical Engineering
The hydro-viscous drive (HVD) has been widely used in fan transmission in vehicles, fans, and scraper conveyors for step-less speed regulation or soft starting. In the mixed friction stage, the contact, friction, and torque characteristics of friction pairs are very complex and change at any time. The characteristics of the frictional and hydrodyna...
Wu, Zhaoping Li, Xiaoning Guo, Zhonghua
Published in
Chinese Journal of Mechanical Engineering
In current research on soft grippers, pneumatically actuated soft grippers are generally fabricated using fully soft materials, which have the advantage of flexibility as well as the disadvantages of a small gripping force and slow response speed. To improve these characteristics, a novel pneumatic soft gripper with a jointed endoskeleton structure...
Peng, Qi’an Wang, Sanmin Zhi, Changjian Li, Bo
Published in
Chinese Journal of Mechanical Engineering
There are vast constraint equations in conventional dynamics analysis of deployable structures, which lead to differential-algebraic equations (DAEs) solved hard. To reduce the difficulty of solving and the amount of equations, a new flexible multibody dynamics analysis methodology of deployable structures with scissor-like elements (SLEs) is prese...
Wang, Haibo Men, Mingliang Yan, Yu Wan, Min Li, Qiang
Published in
Chinese Journal of Mechanical Engineering
Earings appear easily during deep drawing of cylindrical parts owing to the anisotropic properties of materials. However, current methods cannot fully utilize the mechanical properties of material, and the number of earings obtained differ with the simulation methods. In order to predict the eight-earing problem in the cylindrical deep drawing of 5...
Dai, Juying Tang, Jian Huang, Shuzhan Wang, Yangyang
Published in
Chinese Journal of Mechanical Engineering
Hydraulic systems have the characteristics of strong fault concealment, powerful nonlinear time-varying signals, and a complex vibration transmission mechanism; hence, diagnosis of these systems is a challenge. To provide accurate diagnosis results automatically, numerous studies have been carried out. Among them, signal-based methods are commonly ...
Shi, Di Zhang, Wuxiang Zhang, Wei Ding, Xilun
Published in
Chinese Journal of Mechanical Engineering
Lower limb rehabilitation exoskeleton robots integrate sensing, control, and other technologies and exhibit the characteristics of bionics, robotics, information and control science, medicine, and other interdisciplinary areas. In this review, the typical products and prototypes of lower limb exoskeleton rehabilitation robots are introduced and sta...
Yi, Wangmin Zheng, Yu Wang, Weifang Tang, Xiaoqiang Liu, Xinjun Meng, Fanwei
Published in
Chinese Journal of Mechanical Engineering
Traditional simulation methods are unable to meet the requirements of lunar takeoff simulations, such as high force output precision, low cost, and repeated use. Considering that cable-driven parallel mechanisms have the advantages of high payload to weight ratio, potentially large workspace, and high-speed motion, these mechanisms have the potenti...
Ni, Yanbing Zhou, Haiyang Shao, Cuiyan Li, Jinhe
Published in
Chinese Journal of Mechanical Engineering
By studying the effects of geometric precision on kinematic accuracy, an error mapping model has been established, based on the hypothesis that a motion pair and its installation surface are rigid. However, when using this assumption, there is a significant error induced in high-precision computer numerical control (CNC) machine tools as compared w...
