On the acoustic-radiation-induced strain and stress in elastic solids with quadratic nonlinearity (L)

This letter demonstrates that an eigenstrain is induced when a wave propagates through an elastic solid with quadratic nonlinearity. It is shown that this eigenstrain is intrinsic to the material, but the mean stress and the total mean strain are not. Instead, the mean stress and total means strain also depend on the boundary conditions, so care must be taken when using the static deformation to measure the acoustic nonlinearity parameter of a solid. (c) 2011 Acoustical Society of America. [DOI: 10.1121/1.3583501]