Preservation of the fundamental natural frequencies of rectangular plates with mass and spring modifications

Investigation on the possibility of using springs to preserve the fundamental frequency of a thin rectangular plate carrying any number of point masses was carried out. The problems on plates carrying concentrated masses were encountered in the design of electronic systems. The receptance matrix of the modified plate were obtained by calculating the receptance matrix of the unmodified plate and the receptance matrix corresponding to the modification. The natural frequencies of the modified plate were calculated by analyzing the receptance data.