Papers by Keyword: Agitator

Abstract: Agitator as a key component of fracturing unit, its dynamic characteristic has great influence on performance of fracturing fluid and operation of sand blender, so it is necessary to get the dynamic characteristic of agitator. In this study, we conduct the experimental modal test of agitator by using uTeKL dynamic signal analysis system. The modal test system structure, the procedure and the technique of modeling and testing is presented in detail. Also the finite element modal analysis of agitator is carried out with SolidWorks software. Modal test and finite element analysis reveal similar results with the maximum natural frequency error is 5.15% and corresponding modal shapes are nearly same, which means the method and technique of modal test proposed in this paper is correct, the result is confident, and the finite element modal analysis of the agitator is feasible.

Abstract: The welded bracket is an important supporting component with the structural complexity and crucial functional roles in a large-scale agitator. Strength and modal analysis on it are carried out with the finite element analysis software COSMOS/DesignStar according to the equipment’s working behaviours in presence of rational FEA model of the welded bracket being created with 3D CAD software SolidWorks. The conclusion is made from analysis results that the strength criterion is satisfied with operating requirement of the equipment, and the risk area of the tensile stress is explored, moreover, the dangerous natural frequencies are 41Hz and 95Hz which are worked out respectively through modal analysis results. This analysis process is significant for the agitator design. The technique foundation and method are not only set up effectively, but also the utilized data is provided for the product design and successive manufacturing. The lead time of the agitator will be shortened, and the product quality will be improved.