Meshing Stiffness Calculation of Spur Bevel Gears Considering the Tooth Pair Coupling by Li Feifei, Dong Huimin, Zhang Chu

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Digital Radiography for Determination of Primary Tooth Length: In Vivo and Ex Vivo Studies by Maria D. Basso, Fabiano Jeremias, Rita C. L. Cordeiro, Lourdes Santos-Pinto

“…Methods for determining the root canal length of the primary tooth should yield accurate and reproducible results. …”
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Analysis of Interarch Tooth Size Relationship in Nepalese Subjects with Normal Occlusion and Malocclusions by Rajeev Kumar Mishra, Dashrath Kafle, Rahul Gupta

“…The clinically significant anterior tooth size discrepancy was more prevalent than that of the overall ratio.…”
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Dynamics Characteristic Analysis of Spur Gear Pairs based on Tooth Surface Friction by Lu Fengxia, Wang Haofei, Zhu Rupeng, Bao Heyun, Jiang Huihui

“…A bending-torsional nonlinear dynamics model of the spur gear pair with 6-DOF is established and the dimensionless dynamics equations are derived.The tooth surface friction,time-varying stiffness,gear backlashes as well as gear mesh errors are considered in this model.Based on the location of the contact line,the mathematical expressions of the tooth surface friction and the friction torque are both derived.The effects of tooth surface friction on the dynamic behaviors of the system are studied.The results show that the tooth surface friction can increase the vibration of the system,and the effect is more obvious on the vibration in the perpendicular direction to the meshing line.The degree of the chaotic motion of the system can be reduced by the tooth surface friction,and the bifurcation of the system becomes blurred at the high meshing frequency and chaotic motion appears earlier by the tooth surface friction.…”
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Study on Influence of Ultrasonic Vibration Lapping Gear on the Machining Quality of Tooth Flank by Derong Zhu, Xiaozhong Deng, Jianjun Yang

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Study on the Spalling Fault Degradation Mechanism and Dynamic Model of Gear Tooth Surfaces by Peng Yi, Wu Shengli, Xing Wenting, Wang Chonghao

Subjects: “…Tooth surface crack…”
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Tooth Surface Modification for Helical Gear Pairs considering Mesh Misalignment Tolerance by Guosheng Han, Bing Yuan, Guan Qiao

“…Mesh misalignment in mating the gear tooth surface is common and difficult to be determined accurately because of system deformation and bearing clearances, as well as manufacturing and assembly errors. …”
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Stress Analysis of the Flexspline with Double- circular- arc Tooth Profile and Variable Structure by Zhang Yushuang, Wang Jiaxu, Wang Zhengwei, Pu Wei, Li Junyang, Zhou Guangwu

“…The overall three- dimensional assembly models of harmonic gear drive with double- circular- arc tooth profile and elliptical wave generator is established,then,the finite element analysis of the assembly model is carried out. …”
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Study on the Meshing Stiffness of Spur Gear Considering Contact Characteristic of Tooth Surface by Chen Ruibo, Zhang Jianjie, Zhou Jianxing, Sun Wenlei

Subjects: “…Straight tooth cylindrical gear…”
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Research on Deviation Analysis and Proportional Correction Method for Face Gear Tooth Turning by Ren Minghui, Wei Bingyang, Deng Xiaozhong, Han Zhengyang

“…Based on the mathematical model of gear turning cutters and face gears, a tooth surface deviation model for gear turning is established using gear shaping as the theoretical tooth surface. …”
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Physiologic Midtreatment Tooth Movement as a Correction Strategy for Iatrogenic Root Exposure by Adith Venugopal, Paolo Manzano, M. Srirengalakshmi, Anand Marya, Nikhilesh R. Vaid, S. Jay Bowman

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Method for Establishing New Cycloidal Tooth Profile based on Rolling-sliding Effect by Yanhua Wang, Chaoyang Li, Ye Zhang, Bingkui Chen

“…The tooth profile，comprehensive curvature radius and contact stress of the new tooth profile and that of the standard cycloidal tooth profile are compared. …”
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Design of the Gear Shaping Process of Gear Pump Linear Conjugate Inner Tooth by Zhou Qinghua, Yang Zhongsheng, Deng Yingcheng

“…The processing technology of the special Linear conjugate internal gear shaping of gear pump is studied,and the gear shaper parameters which affects the machining accuracy of internal gear is obtained,on this basis,the relieving amount,column oblique movement,the gear tooth profile angle etc are analyzed and test.The results show that with the increase of the main movement speed and the workbench rotational speed,the inner gear processing interference is reduced,the cutting force and the workpiece cutting residual heat is decreased,the workpiece thermal deformation is become smaller,at the same time,the processing quality of workpiece surface is improved.…”
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Design Method for Twisting and Reducing Tooth Surfaces of Herringbone Gears for Form Grinding by Zhang Xin, Liu Xinrong, Wang Huipeng

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Optimization Simulation Research of Lubrication Injection Parameters for Wide Tooth Cylindrical Gears by Xiangyu Li, Aihua Yang, Yumei Hu, Shuhua He

“…When spraying oil，it is more conducive to increase the oil and gas ratio and the convective heat transfer coefficient of the meshing tooth surface， thus，efficient lubrication and cooling of meshing tooth surface can be realized.…”
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Research on Tooth Wear Testing Technology of Face Gears Based on Reverse Engineering by Zhang Jun, Li Fangfang, Wang Yanzhong

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Design Approach of Tooth Profile Parameter for Harmonic Drive with Nice Meshing Performance by Dong Huimin, Zhang Jili

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STUDY ON DYNAMIC CHARACTERISTICS OF END-TOOTHED CONNECTION ROTOR CONSIDERING CONTACT EFFECT by YANG ZhengLie, WANG AiLun, ZHANG HaiBiao, MA Wu, WANG Hai

Subjects: “…End-tooth connection…”
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Dynamics Analysis of Helical Gear with Time-varying Stiffness and Tooth Pitch Error by Zhang Liu, Wu Xuncheng, Xu Junjian, Zhang Juecheng, Zhang Yanjie

“…Combining with the internal incentives,such as the tooth pitch error,the shaft coupling nonlinear dynamics model of helical gear pair bending and twisting is established. …”
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Contact Characteristics Analysis of Tooth Surface Microscopic Morphology Based on the Fractal Theory by Sun Zhenmao, Wu Shengli, Duan Weijian, Xing Wenting

“…Therefore, it is urgent to propose a new method to calculate the contact stiffness of the tooth surface and to analyze the microscopic contact characteristics. …”
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