2012 EJRNL PP Jiangong Yu 1.pdf
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Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
Conventional orthogonal polynomial approach can solve the multilayered plate only
when the material properties of two adjacent layers do not change significantly. This paper de-
veloped an improved orthogonal polynomial approach to solve wave propagation in multilayered
plates with very dissimilar material properties. Through numerical comparisons among the exact
solution, the results from the conventional polynomial approach and from the improved poly-
nomial approach, the validity of the improved polynomial approach is illustrated. Finally, it is
shown that the conventional polynomial approach can not yield correct continuous normal stress
profiles. The improved orthogonal polynomial approach has overcome this drawback.