8 th International congress of academic research, 22 - 25 June 2022, pp.1-2
Prediction of loads during wave impact is of a great importance in ship tanks. In order to investigate different wave types, a series of experimental investigations were carried out by tracing the free surface deformation, structural deformation and pressure distribution on the slope walls. The oscillation motion is applied via a mechanism then the liquid motion impact on the slope sidewalls. From digital images captured using a high speed camera the evaluation of wave versus time is observed and characteristics of sloshing is measured. The different excitation frequencies are applied to the tank and the free surface deformation, wave generation, wave run up through sidewall and mixture of air-water are examined. The constant height of strain gage and pressure sensors are installed with divining equal compartments to the tank. The flexible wall is used during strain measurement then rigid wall is applied same tank to report pressure distribution. The values of pressure are measured by mounting three pressure sensors to the sidewalls and compared with each oscillation frequencies. Then shape of pressure time history, peak points and the time of reaching heights are highlighted. The measurement of the global loads on the chamfer tank during sloshing experiment is performed by employing a strain gage. The wave impact on structure are plotted by strain values against time. The wave impact is significantly rely on excitation frequencies and natural frequency of tank itself. The water level deformation is extremely deformed at resonance stage. It is also caused to transfer the energy to slope wall as pressure, also structural deformation. This study is mainly focused on resonance frequency excitations. The results demonstrated that pressure sensor measurement doesn’t reliable as much as strain measurement at around resonance frequencies due to nonlinear wave impact.