Analysis and Simulation of Tooth Root Fault based on ANSYS / LS- DYNA by Liang Pengwei, Han Zhennan, Ning Shaohui, Wang Dawei

“…A pair of undamaged gears and a pair of gears with crack on the root of tooth are simulated and analyzed by using the LS- DYNA,and the change of the acceleration signals and meshing force of any node on the gear can be got. …”
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Prediction model of gear tooth flank fracture considering interfacial friction by ZHI YanFeng, WANG XiaoPeng, CAO ZhiGang, GUAN HongJie, YU FeiPeng, FAN RuiLi, LI HaiXia, WAN ShaoXiong

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Tooth Contact Analysis of Straight Bevel Gears Machined with Concave Cutters by Wang Zhiyong, Zhang Zhu, Duan Zhihong, Zhang Yu

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Research on Transmission Error of Hypoid Gear based on Real Tooth Surface by Yimin Mo, Renjie Mo, Qiming Li, Jie Liu, Junjian Yang, Yecai Huang

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Design of Gleason High-ratio Hypoid Gear with Parallel Tooth Depth by Wang Zhiyong, Li Chaoyue, Huang Denghong

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Equivalent Substitution of Stress Balanced Tooth Profile based on Eccentricity Modification by Xuan Liang, Jiang Heng, Guan Tianmin, Xie Chao

“…By the theory of equivalent substitution,the FT455 model with high precision FT pin-cycloid is used as the carrier,and based on the way of eccentricity modification,the equivalent substitution of stress balanced tooth profile is carried out. To ensure that the tooth profile error is the smallest as target function,the VB programming and MATLAB optimization is carried out,to optimize the design of eccentricity modification tooth profile to replace the stress balanced tooth profile. …”
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Abnormality in the Morphogenesis of Tooth Development and Relationship with Orthodontic Deformities and Treatment Approaches by Greta Roussanova Yordanova-Kostova, Mario Vaskov Grancharov, Gergana Diyanova Gurgurova

“…The modern CBCT imaging is the best diagnostic method for identifying problems related to tooth positions or tooth germs.…”
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Effect of Methotrexate Injection on Orthodontic Tooth Movement: An Experimental Study on Rats by Amin Golshah, Khaled Omidi, Nafiseh Nikkerdar, Hedaiat Moradpoor, Fatemeh Ghorbani

“…Knowledge about the effects of medications, vitamins, and various supplements on orthodontic tooth movement (OTM) is imperative for orthodontists. …”
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Analysis and Correction of Tooth Deformation of the Herringbone Gear with Electron Beam Welding by Guan Rongxin, Ding Yinghui, Qin Lei, Zhao Yukai, Miao Weiwei

“…Taking the electron beam welding process as an example,the tooth profile analysis of the split type herringbone gear is carried out after the deformation of the diameter direction. …”
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Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear by Yan Hongzhi, Wen Guangxu, Li Chao, Zhou Tengfei

“…Based on the coordinate transformation and meshing theory,the tooth surface equation of face gear is deduced.The finite element model of the different parameters（pressure angle,modulus）of face gear transmission is built,the influence of tooth face parameters on tooth root bending stresses,contact area and the distribution rule of bending stresses along the direction of tooth height and width are analyzed.Based on modified local stress-strain method,the fatigue crack initiation life in different roughness of grinding and milling tooth face is calculated.And the fatigue crack propagation life is predicted with damage tolerant design method.The results prove that the pressure angle has a great influence on the tooth face bending fatigue life,especially for the crack initiation life.A larger pressure angle is helpful to improve the tooth face bending fatigue comprehensive life.In addition,grinding method is more conducive to improve the tooth face bending fatigue life than milling method.This study provides a basis for the anti-fatigue design of face gear.…”
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ANALYSIS AND PARAMETERS OPTIMIZATION OF TOOTH PLATE OF IRON ROUGHNECK CLAMPING PLIERS by PEI JunFeng, SONG ChuanZhi, LIU ZhiGang, CHEN Jie, SHEN Hui, MIAO HongJian

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An Investigation of Influence of Transition Arc Radius on the Tooth Root Crack Propagation by Wan Guoxin, Tang Jinyuan, Li Guowen, He Yuhui

“…The transition arc radius has an important influence on the root stress and root stress is an important influencing factor on the tooth root fatigue crack propagation,so that it is necessary to study the influence of transition arc radius on the tooth root crack propagation. …”
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Research of the Influence of Spur Gear Tooth Bilateral Crack on Its Stiffness by Junjie Lai, Yanxue Wang, Chaoyang Jiang

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Study on Meshing Stiffness and Dynamic Characteristics of Fine High Tooth Gears by Zhang Xiangfeng, Shang Jun, Zhou Jianxing, Fei Xiang

Subjects: “…Fine high tooth…”
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Prevalence of Postoperative Infection after Tooth Extraction: A Retrospective Study by Elaine Kueh Yue Yi, Annabelle Lai Siew Ying, Mandakini Mohan, Rohit Kunnath Menon

“…The aim of the study was to identify the postoperative infection rates after tooth extraction in a university dental clinic and to identify the factors associated with an increased risk for postoperative infection. …”
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Lubrication Performance Analysis of RV Reducer Cycloid Tooth Profile Modification by Jun Wang, Zhilong Chen, Qunchao Chen, Wentao Li, Quan Wang, Daxing Zhao

Subjects: “…Tooth profile modification…”
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Analysis and Laser Remanufacturing of the Slewing Ring Gear Tooth Broken of the Reclaimer by An Xiaoyan, Zhang Hongshan, Shi Changjun

“…For the case of the gear tooth broken,which belongs to the bucket wheel reclaimer,by using COSMOS finite element analysis method,the details of the failure is scientifically analyzed.The broken tooth is repaired by using the laser overlaying welding technology.The results of repair show that the application of laser remanufacturing technology in the parts restoration works of hoisting and conveying machinery is of great significance in engineering,it can not only ensure the safety and reliability of the repaired parts,but also greatly reduces the enterprise production operation cost and improves the production efficiency.…”
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Research on Loaded Transmission Error of Internal Short Tooth Spur Gears by Yin Xunmin, Jia Haitao, Zhang Xijin

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The Validity and Reliability of Automatic Tooth Segmentation Generated Using Artificial Intelligence by Ammar Sh. Al-Ubaydi, Dheaa Al-Groosh

“…This study aimed at evaluating the precision of the segmented tooth model (STM) that was produced by the artificial intelligence (AI) program (CephX®) with an intraoral scan (IOS) and insignia outcomes. …”
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Study on Yaw Gearbox Broken Tooth of MW-class Wind Turbine by Wang Fugang, Cheng Linzhi, Su Fengyu, Xie Jinjuan, Tong Shiwei, Li Chengchen, Zhuo Ran, Li Yongkui

“…The comprehensive analysis is carried out on the failure gears,the causes of gear damage,such as tooth fracture,design factor,production factor,factors of assembly and operation,system protection factor,etc. are analyzed one by one,the final positioning between the thrust pad bearing and yaw ring interference is the direct cause. …”
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