Dynamics of functionally graded beams carrying a moving load with influence of porosities and partial foundation support

The novelty of the present work is to study simultaneous influence porosities and partial Pasternak foundation support on dynamics functionally graded (FG) beams carrying a moving load. are made from an open-cell steel foam with symmetric asymmetric porosity distributions in thickness direction. Based refined third-order shear deformation theory, two-node beam element ten degrees freedom derived employed construct discretized equation motion for beams. Dynamic characteristics, including time histories mid-span deflection, dynamic magnification factor (DMF) stress distribution, computed aid Newmark method. numerical result reveals that supporting length has important role beams, dependence DMF upon coefficient governed by length. It also found distribution more impact response than one does, difference between DMFs obtained two significant higher coefficient. effects porosities, load velocity behavior examined detail highlighted