ABSTRACT
For isotropic media, the stiffness matrix is given by () [ λ + 2 μ λ λ 0 0 0 λ λ + 2 μ λ 0 0 0 λ λ λ + 2 μ 0 0 0 0 0 0 μ 0 0 0 0 0 0 μ 0 0 0 0 0 0 μ ] https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203745663/77810aed-646c-4e0e-b927-bb49db307319/content/eq79.tif"/>
