Analytical Method on Contact Stress of Helical Gear with Asymmetric Involutes

2011 ◽  
Vol 321 ◽  
pp. 157-160 ◽  
Author(s):  
Ning Li ◽  
Wei Li ◽  
Ning Liu ◽  
Hua Gang Liu
Keyword(s):  
Contact Stress ◽  
Contact Line ◽  
Side Surface ◽  
Helical Gear ◽  
Gear Pair ◽  
Line Contact ◽  
Contact Lines ◽  
Large Pressure ◽  
Helical Gear Pair ◽  
Meshing Process

Helical gear with asymmetric involutes is a new kind gear which driving side surface is large pressure angle profile. The numbers of meshing tooth are discussed during helical gear pair meshing process, thus the length of total contact lines is determined easily. It is difficult to calculate contact stress by existing formula because this kind gear is non-standard. A calculating formula is derived which can calculate contact stress of helical gear with asymmetric involutes in this paper. A computer’s software is written in order to calculate instantaneous contact stress of contact line. Contact stress is compared between symmetric helical gear and asymmetric helical gear.

An Improved Method to Calculate the Meshing Stiffness of Helical Gear

2012 ◽  
Vol 482-484 ◽  
pp. 1285-1289
Author(s):  
Wei Yang ◽  
Yi Lin Huang ◽  
Hong Sun
Keyword(s):  
Contact Line ◽  
Helical Gear ◽  
Gear Pair ◽  
Improved Method ◽  
Meshing Stiffness ◽  
Gear Transmission System ◽  
Engagement Process ◽  
Helical Gear Pair ◽  
Gear Engagement ◽  
Meshing Process

The meshing-stiffness of a helical gear pair is one of important parameters to study dynamic characteristics of gear transmission system. However, the equation to solve the meshing stiffness is very complex and difficult to get it. We put up with an improved method to quickly calculate the meshing stiffness through analyzing the meshing process and characteristics of the helical gear pair. The obtained time-variant meshing stiffness curve matches the theoretic stiffness curve very well. The result is shown that the method for calculating contact line based on the helical gear engagement process and characteristics, can be understand intuitively and easily.

scholarly journals Analisis Variasi Jarak Sumbu Poros Terhadap Tegangan Kontak Dan Tegangan Bending Pada Helical Gear Pair Berdasarkan Metode Elemen Hingga

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Sopyan Ali Rohman ◽  
IDK Okariawan ◽  
Achmad Zainuri
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Contact Stress ◽  
Helical Gear ◽  
Gear Pair ◽  
Security Design ◽  
Bending Stress ◽  
Helical Gear Pair ◽  
Center Distance ◽  
Element Method

This researchs object is determining  the effect of modifying center distance to bending stress and contact stress on the helical gear pair based on the finite element method. And to know the safety factor on each center distance variation within helical gear pair.Gear being analyzed is one of the gears on Honda motor cycles branded Beat. To know the specification of gear, the helical gear geometry measurements were taken. Based on the results of measurements was carried out models of helical gear pair by AUTO CAD software. Then,  bending stress and contact stress analysis with finite element method on  ANSYS 12.1. Optimal center distance of gear pairs is determined by safety factors on the quasi statatis condition.From the research results can be concluded that the change of center distance can affect the bending stress and contact stress on gears and affect of security design. A safe center distance variation is 52.65 mm, 52,75 mm, 52,85mm and 52.95 mm.

scholarly journals A Micro-TEHL Finite Line Contact Model for a Helical Gear Pair

2014 ◽  
Vol 7 (1) ◽  
pp. 104790 ◽  
Author(s):  
Mingyong Liu ◽  
Caichao Zhu ◽  
Huaiju Liu
Keyword(s):  
Helical Gear ◽  
Contact Model ◽  
Gear Pair ◽  
Line Contact ◽  
Finite Line Contact ◽  
Finite Line ◽  
Helical Gear Pair

A thermal finite line contact EHL model of a helical gear pair

2012 ◽  
Vol 227 (4) ◽  
pp. 299-309 ◽  
Author(s):  
Caichao Zhu ◽  
Mingyong Liu ◽  
Huaiju Liu ◽  
Xiangyang Xu ◽  
Libin Liu
Keyword(s):  
Helical Gear ◽  
Gear Pair ◽  
Line Contact ◽  
Finite Line Contact ◽  
Finite Line ◽  
Helical Gear Pair

Vibration-based fault diagnosis of helical gear pair with tooth surface wear considering time-varying friction coefficient under mixed EHL condition

2021 ◽  
pp. 1-16
Author(s):  
Siyu Wang ◽  
Rupeng Zhu
Keyword(s):  
Dynamic Response ◽  
Hydrodynamic Lubrication ◽  
Helical Gear ◽  
Calculation Model ◽  
Tooth Surface ◽  
Time Varying ◽  
Gear Pair ◽  
Surface Wear ◽  
Mesh Stiffness ◽  
Helical Gear Pair

Abstract Based on “slice method”, the improved time-varying mesh stiffness (TVMS) calculation model of helical gear pair with tooth surface wear is proposed, in which the effect of friction force that obtained under mixed elasto-hydrodynamic lubrication (EHL) is considered in the model. Based on the improved TVMS calculation model, the dynamic model of helical gear system is established, then the influence of tooth wear parameters on the dynamic response is studied. The results illustrate that the varying reduction extents of mesh stiffness along tooth profile under tooth surface wear, in addition, the dynamic response in time-domain and frequency-domain present significant decline in amplitude under deteriorating wear condition.

A distributed dynamic mesh model of a helical gear pair with tooth profile errors

2018 ◽  
Vol 25 (2) ◽  
pp. 287-303 ◽  
Author(s):  
Qi-bin Wang ◽  
Hong-bo Ma ◽  
Xian-guang Kong ◽  
Yi-min Zhang
Keyword(s):  
Helical Gear ◽  
Tooth Profile ◽  
Dynamic Mesh ◽  
Gear Pair ◽  
Mesh Model ◽  
Profile Errors ◽  
Tooth Profile Errors ◽  
Helical Gear Pair
Sign in / Sign up

Export Citation Format

Share Document