中南大学学报（自然科学版）2017，Vol.48Issue(12)：3209-3215,7.DOI:10.11817/j.issn.1672-7207.2017.12.010
基于热弹耦合的齿轮热刚度研究
Research on thermal stiffness of gear based on thermo-elastic coupling
摘要
Abstract
To study the influence of temperature on gear stiffness, the concept of thermal stiffness of gear was proposed, and its calculation method was defined. The correction factor of thermal stress Xte was proposed, and the calculation methods of the thermo-elastic coupling stress and deformation were obtained. The single tooth thermal stiffness and the meshing thermal stiffness of gear were calculated by finite element method and analytical method, respectively. The calculation results of the two methods were basically consistent. The results show that the thermal stiffness of gear under the condition of thermo-elastic coupling is a combination of elastic stiffness and modified thermal expansion stiffness. The meshing thermal stiffness of gear pair is decreased when compared with the meshing elastic stiffness. There is only one intersection point between the single tooth thermal stiffness and elastic stiffness distribution curves along the meshing line, and the intersection point is located near the root area. The thermal stiffness is greater than the elastic stiffness in the root side of the intersection point, and is less than the elastic stiffness on the tip side of the intersection point.关键词
热弹耦合/热刚度/齿轮/有限元法/解析法Key words
thermo-elastic coupling/thermal stiffness/gear/finite element method/analytical method分类
机械制造引用本文复制引用
罗彪,李威,李林升..基于热弹耦合的齿轮热刚度研究[J].中南大学学报（自然科学版）,2017,48(12):3209-3215,7.基金项目
国家自然科学基金资助项目(51775036)(Project (51775036) supported by the National Natural Science Foundation of China) （51775036）
