Resumen de Accurate dynamic analysis of functionally graded beams under a moving point load
Xinwei Wang, Xiaohu Liang, Chunhua Jin
Based on the physical neutral surface, an N-node novel weak form quadrature beam element is proposed and the explicit formulas for computing the stiffness and mass matrices are given. The proposed element is then used to analyze the dynamic behavior of the functionally graded material (FGM) beams under a moving point load. Both elasticity modulus and mass density vary exponentially across the thickness. Investigations show that the maximum dynamic magnification factors are independent of the power-law exponent kat a fixed nondimensional parameter a. This finding may be useful in design and engineering applications.
