1Research on calculation and simulating analysis of cycloidal pin wheel meshing stiffnessSU Jianxin, WANG Dongfeng, XU Jiake, ZHANG Jing, LÜ RuifangTheory·Research1-72Effect of the operating temperature on thermal EHL performance of steel-POM gearsZHOU Jia'ao, LIU Xiaoling, ZHANG Zheng, LI QunTheory·Research8-153Analysis method of important structural parameters of four-point contact ball bearingWANG Yanshuang, ZHANG Chenxu, WANG Mingwei, WANG Zijun, WANG Gaofeng, LI Wenbin, ZHANG ShuyuTheory·Research16-244Mutual tectonics mechanism of working outlines between inner and outer of node-circle based on the same convex-rotorLI Yulong, LIU Ping, SONG AnranTheory·Research25-295Root fatigue crack propagation characteristics and its effect on mesh stiffnessWANG Zhiyuan, ZHANG Kun, SHAO Guangjun, SHI Lubing, WANG Dongfei, YU FeipengTheory·Research30-36,476Performance analysis and dimensional optimization of a 2URR-URU parallel mechanism with remote center of motionCHE Linxian, LI Jie, WEN Shikun, JIANG HaiyiDesign·Calculation37-477Design and analysis of foldable structures inspired by the origamiZENG Qineng, HUANG Guibin, YU Yiyin, WANG RuguiDesign·Calculation48-558Structure design and optimization of jumping mechanisms based on velocity manipulabilityLI Chenjiarui, HOU Yu, SUN Wei, XU Yantao, WANG ZhongxuanDesign·Calculation56-63,799Design of pure rolling cylindrical gears with circular arc tooth profile in the normal sectionYANG Hui, XIAO Xiaoping, TANG Wanhe, CHEN Zhen, CHEN Yangzhi, FUENTES AlfonsoDesign·Calculation64-7010Single-loop translational space-parallel mechanism with motion decoupling:topological design and kinematics dimension optimizationPAN Haiyue, SHEN Huiping, DU Zhongqiu, LI Tao, LI JuDesign·Calculation71-7911Theoretical analysis and optimal design of permanent magnet assisted magnetic gearsSHANGGUAN Xuanfeng, LI Shihao, ZHANG Longqi, ZHAO LeiDesign·Calculation80-8612Structural design and obstacle-crossing performance analysis of hexapod reconnaissance robotsXU Haoyang, CAO Le, ZHANG SiheDesign·Calculation87-92,15513Design and parameter identification of the wireless torque test system for hybrid vehiclesLI Jie, ZHOU Yijian, GENG Chong, PANG JinluTest·Analysis93-9914Analysis and optimization of meshing characteristics of power-split hub reducersWANG Zhao, LÜ Zhenyu, LIU Keke, ZHANG Wenxia, ZHOU Guocheng, MA TianqiTest·Analysis100-10915Study on dynamic characteristics of the helicopter main transmission systemXU Huachao, XU Zhiliang, WANG Yong, FAN Mengyang, YANG Longze, LIAO HongjunTest·Analysis110-11616Efficient thermal management of coaxial magnetic gears with pulsating heat pipe and forced air coolingZHOU Yufeng, LUO Shuai, CHEN Hang, HAO XiuhongTest·Analysis117-125,13817Fault diagnosis of planetary gearboxes based on bispectral composite spectral features of torsional vibration modulation signalsZHANG Yibao, HU Lei, XU Yuandong, SONG XinkaiDevelopment·Application126-13218Optimal design and test research on heat dissipation of field modulated permanent magnetic gear heat pipes based on phase-change cooling principleWANG Jinzhong, YU Chengwei, ZHOU Yufeng, LUO Shuai, HAO XiuhongDevelopment·Application133-13819Structural design and research of multifunctional auxiliary defecation nursing bedWANG Fang, LIN Wanying, TIAN Botian, CAO Zhanhong, HU Jun, PAN GuoxinDevelopment·Application139-14620Fault diagnosis model of rolling bearings based on the M-YOLO networkNING Shaohui, ZHANG Shaopeng, WU Yukun, DU Yue, FAN XiaoningDevelopment·Application147-155 