CAJ | 학술논문

为了提高发动机风扇盘二维有限元模型应力分布的精确度，选择典型的三辐板结构，利用AN-SYS 12．0完成三辐板风扇盘三维结构的有限元建模．同时建立三辐板风扇盘的二维轴对称有限元模型，将非轴对称载荷分解成傅里叶级数，并求解了其径向应力、周向应力和等效应力，对比了传统的二维分析、非轴对称加载二维与三维分析的结果．结果表明：施加均布载荷的二维模型应力分布与三维模型的应力分布情况相差较远，施加非轴对称载荷的二维模型的应力分布与三维模型的应力分布情况较为接近．与只施加均布载荷的方法相比，本方法提高了发动机风扇盘二维有限元模型应力分布的准确性．
위료제고발동궤풍선반이유유한원모형응력분포적정학도，선택전형적삼복판결구，이용AN-SYS 12．0완성삼복판풍선반삼유결구적유한원건모．동시건립삼복판풍선반적이유축대칭유한원모형，장비축대칭재하분해성부리협급수，병구해료기경향응력、주향응력화등효응력，대비료전통적이유분석、비축대칭가재이유여삼유분석적결과．결과표명：시가균포재하적이유모형응력분포여삼유모형적응력분포정황상차교원，시가비축대칭재하적이유모형적응력분포여삼유모형적응력분포정황교위접근．여지시가균포재하적방법상비，본방법제고료발동궤풍선반이유유한원모형응력분포적준학성．
Typical three-wheel disk structure was chosen in order to improve the accuracy of the stress dis-tribution of 2D finite element model of the engine fan disk.Three-wheel fan disk structure of 3D finite ele-ment modeling was completed by using ANSYS 12.0.And the three-wheel fan disk of 2D axisymmetric fi-nite element model was established.The non axisymmetric load was decomposed into Fourier series.Solu-tion of radial stress,circumferential stress and equivalent stress was done subsequently.Compared with typ-ical 2D analysis load,2D non axisymmetric load and 3D analysis load show that the stress distribution of 2D model applying the uniform load is far away from the stress distribution of 3D model,and the stress dis-tribution of 2D model applying the non axisymmetric load was close to the stress distribution of 3D model. Compared with applying the uniform load,this method can improve the accuracy of the stress distribution of 2D finite element model of the engine fan disk.