title: Energy spectrum evolution of a diffuse field in an elastic body caused by weak nonlinearity.
abstract: We study the evolution of diffuse elastodynamic spectral energy density under the influence of weak nonlinearity. It is shown that the rate of change of this quantity is given by a convolution of the linear energy at two frequencies. Quantitative estimates are given for sample aluminum and fused silica blocks of experimental interest.
authors.affiliation: Department of Theoretical and Applied Mechanics, University of Illinois, 104 South Wright Street, Urbana, Illinois 61801, USA. akolzine@uiuc.edu
authors.forename: Alexei
authors.initials: A
authors.lastname: Akolzin
authors.forename: Richard L
authors.initials: RL
authors.lastname: Weaver