水平移动式抛丸机叶片受力的有限元分析

为提高水平移动式抛丸机前曲叶片的使用寿命，运用ANSYS软件，建立了抛丸机叶片的有限元模型，以SOLID45和SURF154单元共同划分叶片网格，采用节点载荷加载方式。结果显示：叶片总体为低应力分布，但存在明显的应力集中点，叶片受弹丸正压力的最大值位于叶片边缘。叶片的失效形式是应力集中引起的疲劳断裂和正压力过大导致的表面磨损。提高叶片的使用寿命，除选用合适的材料提高叶片的耐磨性外，还需要设计合理的叶片形状，以降低最大正压力的影响。

Finite element analysis of horizontal mobile shot blasting machine blade

Aimed at extending the service life of forward-curved blade of horizontal mobile shot blasting machine, this paper introduces use of ANSYS software to developement of a finite element model of shot blasting machine blade and division of the blade grid, depending on both SURF154 and SOLID45 unit and using the nodal load loading method. The results show that the whole blade is in low-stress distribution, but shows obvious stress concentration points and the maximum positive pressure by the projectile found in the edges of the blade. The invalidation of the blades is surface wear caused by fatigue fracture due to stress concentration and excessive positive pressure. Extension of the service life of blades involves both selection of appropriate materials to enhance the wear resistance of blades and better design of blade shape to reduce the impact of maximum positive pressure.