Results 41 to 50 of about 57,861 (304)

A Semi-Analytical Load Distribution Model for Cycloid Drives with Tooth Profile and Longitudinal Modifications

open access: yesApplied Sciences, 2020
The current load distribution model for cycloid drives based on the Hertz contact stiffness typically assumes a two-dimensional planar problem without considering the tooth longitudinal modification effects, which fails to comply with the practical ...
Ting Zhang   +3 more
doaj   +1 more source

An Improved Algorithm for Tooth Contact Analysis for Hypoid Gear Based on Axial Section Programming [PDF]

open access: yes, 2010
An improved algorithm of tooth contact analysis (TCA) is proposed to overcome the deficiency of the current TCA algorithm for hypoid gear. The key improvement of the proposed algorithm is to introduce proportional coefficients of tooth length and tooth ...
Lian Hong Zhang, Wei Wei
core   +1 more source

Research on Loaded Contact Analysis and Tooth Wear Calculation Method of Cycloid–Pin Gear Reducer [PDF]

open access: yes, 2023
This study establishes the geometric model of cycloid–pin gear meshing transmission based on the multi-tooth meshing characteristics of the cycloid speed reducer.
Bingyang Wei   +4 more
core   +1 more source

Multi‐Enzyme Mimetic Molybdenum Nitride Nanozymes Reshape Subgingival Microenvironment for Synergistic Periodontitis Therapy via ROS Regulation and Microbiome Remodeling

open access: yesAdvanced Science, EarlyView.
ABSTRACT Periodontitis, a chronic inflammatory disease initiated and sustained by plaque microorganisms and host immune response, remains an intractable oral disease and a leading cause of tooth loss worldwide. Traditional mechanical debridement and adjunctive antibiotic or antiseptic therapy often shows limited efficacy due to the complex anatomical ...
Weiyu Zhang   +12 more
wiley   +1 more source

Study on Contact Ratio Calculation of Face Gear with Modification based on Gear Tooth Contact Analysis [PDF]

open access: yes, 2015
The contact ratio is an important performance index of gear transmission,but there is no computational formula of contact ratio for complex tooth surface transmission,such as face gears.The definition of face gear contact ratio is given,and the method of
Tang Jinyuan, Dong Jianxiong
core   +1 more source

Aptamer‐Directed Porous DNA Nanocomposite Hydrogel for Active Pulp Preservation: Immunomodulation, Stem Cell Recruitment and Reparative Dentinogenesis

open access: yesAdvanced Science, EarlyView.
This study presents an injectable DNA‐based porous hydrogel integrating catechol motifs and targeting aptamers for pulpitis management. Upon in situ crosslinking, the scaffold actively recruits endogenous dental pulp stem cells, restores redox homeostasis, and modulates immune responses.
Luhui Cai   +9 more
wiley   +1 more source

Tooth Surface Contact Analysis of the Face Gear Pair Involving the Worm Wheel Installation Error

open access: yesJixie chuandong, 2016
The actual tooth surface equation is established considering the worm wheel installation errors based on a five- axis linked CNC grinding machine. The tooth contact analysis( TCA analysis) on the actual tooth surface of face gear and pinion tooth surface
Cui Wei, Tang Jinyuan, Zhou Zhenyu
doaj  

Geometrical Specification Model for Gear - Expression, Metrology and Analysis [PDF]

open access: yes, 2007
To ensure the gear precision, industries need a coherent model to express, to analyse and to check geometrical specifications. Most gear tolerance representations are directly driven by the convenience of dimensional metrology and not by the convenience ...
DANTAN, Jean-Yves   +4 more
core   +1 more source

From Materials to Medical Images: Translating Perovskite‐Based X‐Ray Detectors Toward Clinical Imaging

open access: yesAdvanced Science, EarlyView.
This review examines perovskite‐based X‐ray detectors from a materials‐to‐medical‐images perspective. Recent progress in perovskite‐based X‐ray detectors is discussed with emphasis on their relevance to clinical imaging. The key barriers to clinical implementation are analyzed.
Sibin Wang   +8 more
wiley   +1 more source

A study on loaded tooth contact analysis of a cycloid planetary gear reducer considering friction and bearing roller stiffness

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
The cycloid planetary gear drives designed in the so-called RV-type play an important role in precision power transmission. Not only the high reduction ratio, but also the shock absorbability is the significant advantage.
Ching-Hao HUANG, Shyi-Jeng TSAI
doaj   +1 more source

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