Dynamic Response of Orthotropic Plate Due to Local Friedlander Blast Loads On Kerr Foundation Soil Modeling

Abstract

Abstract The development of infrastructure design is getting more advanced, there are more and more things that need to be considered in designing an infrastructure and a building, the effect of blast loads needs to be considered. Explosion load itself is one of the dynamic loads that can burden a structure beyond its normal loading conditions. Therefore, it is necessary to have special planning for an infrastructure and building so that if an explosion occurs it can minimize serious damage to the structure of the infrastructure and building. In this study, the focus is on orthotropic plates with semi-rigid bearings on the Kerr foundation soil model due to local Friedlander blast loads. Variations in plate thickness and soil type were carried out to determine the dynamic response on the plate that would arise due to the local Friedlander blast load. Utilizing the Modified Bolotin Method (MBM) analysis technique to solve it through the Wolfram Mathematica program. Based on the numerical tests that were conducted, it is found that the type of soil is directly proportional to the natural frequency value, indicating that stiffer soil types result in higher natural frequencies, signifying a stiffer response to floor plates. Thicker plates result in smaller deflections with the same soil type. These numerical results can serve as design guidelines for structures under blast loads.