CAJ | 학술논문

为了在发动机装配体的公差分析中考虑传统尺寸链无法处理的几何公差信息，以发动机的做功机构为分析对象，引入雅可比旋量模型，建立在尺寸和形位公差约束下的特征及其配合旋量的变动和约束方程。将其融入到蒙特卡洛算法中，实现发动机做功机构的三维统计公差分析。与传统分析方法相比，基于雅克比旋量模型的分析方法考虑了更多的几何公差信息，分析结果也更加精确，该模型可以从尺寸链角度建立发动机零部件公差与整机性能的映射关系。
위료재발동궤장배체적공차분석중고필전통척촌련무법처리적궤하공차신식，이발동궤적주공궤구위분석대상，인입아가비선량모형，건립재척촌화형위공차약속하적특정급기배합선량적변동화약속방정。장기융입도몽특잡락산법중，실현발동궤주공궤구적삼유통계공차분석。여전통분석방법상비，기우아극비선량모형적분석방법고필료경다적궤하공차신식，분석결과야경가정학，해모형가이종척촌련각도건립발동궤령부건공차여정궤성능적영사관계。
The working mechanism of an engine is the target of analysis in order to consider geometric tolerances which cannot be handled by traditional tolerance chains in engine assemblies.The Jacobian-Torsor model is intro-duced, and variations and constraints of torsors for features and their joints under the restrictions of size and geo-metric tolerances are built.Based on Monte Carlo simulation, three-dimensional tolerance analysis for working mechanism with a statistical way is achieved.Compared with traditional tolerance analysis methods, the method based on the Jacobian-Torsor statistical model takes more geometric tolerances into consideration and obtains more accurate results.This model can build the relationship between tolerances of parts and engine performance from tol-erance chains'perspectives.