Damage Characteristics Analysis of Water Intake Tower under Hydrodynamic Pressure of Acoustic Unit.

In view of the fact that the additional mass method cannot truly reflect the influence of hydrodynamic pressure in the complex structure of water surrounded by four sides of the intake tower, this paper discusses the coupling effect between the intake tower and the reservoir water based on the acoustic medium theory through the finite element model of the reservoir water-intake tower system established by ABAQUS. The results show that compared with the additional mass method, the natural vibration frequency of the tower-water model based on acoustic element increases, the hydrodynamic pressure decreases, the total displacement of the top of the water intake tower decreases by 66.77%, the acceleration decreases by 10.67%, the maximum tensile stress of the water intake tower decreases by 19.92%, the compressive stress decreases by 21.11%, and the damage area and degree of the water intake tower decrease. The safety of the water intake tower has improved. Therefore, the acoustic unit model has certain accuracy and applicability in the actual engineering design, and provides a new idea for the study of the dynamic water pressure of the water intake tower. [ABSTRACT FROM AUTHOR]