トランスミツションにおける歯元歪の予測手法

摘要

ボルト•ベアリング•歯車の接触非線形を考慮して歯車支持系の変形を精度良く計算することで，歯当たりと歯元歪を精度良く計算できた.さらに，複数のトランスミツションに適用して同一材料のフアイナルのピニオンの歯元歪を算出したところ，寿命と歯元歪の関係はほぼ同一線上になった.以上より，トランスミッションの歯元歪を精度良く予測可能な手法を確立できたと考える.%Deformations of the case and internal components influence the tooth root strain in a transmission. It is important to reproduce these deformation when we predict the tooth root strain accurately. In this situation, reproducing these deformations accurately requires detail modeling of the case and internal components but it makes the simulation time longer. To counter this problem, we propose the simulation methodology where a case and internal components are modeled in detail and a submodel concept is adopted. After that, we conducted experimental validation and confirm the validity of this methodology.