中心传动球磨机排料口结构强度建模与分析

针对中心传动球磨机爪型传动件的薄弱结构,利用UG NX软件集成的三维设计模块和NASTRAN模块建立出料端组件装配体模型,并对其进行有限元分析。原始模型的分析结果显示其最大Von mises应力高于材料的屈服强度,结构的薄弱点在爪柱与十字槽圆盘连接处。两种改进模型A和B都能有效提高排料口的结构强度。数据表明模型B质量轻,所受应力也小于模型A,圆锥面加圆柱面的过渡连接更符合实用要求,为后续的优化设计提供依据。

Structural Strength Modeling and Analysis of Discharge Opening of Center Drive Mill

Aiming at the weak structure of transmission parts of center drive mill claw, the finite element analysis is conducted by the use of three-dimensional modeling and NASTRAN modulesintegrated in UG NX software. Analysis on the original results shows that the max Von mises stress is higher than the material yield stress, and the weak point of original structure appears on the connection between claw columns and cross slot. Both improved models A and B can significantly improve the structural strength. Data show that the quality of model B is light, and the stress of model B is less than that of model A, which indicates that the transitional connection between conical and cylindrical surfacemeets the practical requirements, thus providing the basis for subsequent optimization.