Thermally induced vibration analysis of sandwich beam with metal foam core subjected to blast loading by a framework of two-unknown higher-order beam theory

Abstract Vibrational characteristics of a sandwich beam in thermal environments subjected to blast pressure are investigated this paper. The is composed two isotropic skins and an open-cell metal foam core with either uniform or symmetric distribution internal pores. loading modelled by Friedlander’s equation. A two-unknown higher-order theory combined Hamilton’s principle used establish the governing equations. Navier-type solution Newmark-beta method applied deal equation obtain dynamic responses. efficiency accuracy present study examined through numerical examples. Effects temperature-dependent material properties, porosity coefficient, core-to-skin thickness ratio, length-to-height structural damping on natural frequencies deflection detail.