Robuta

https://www.nist.gov/publications/algorithm-computing-effective-linear-elastic-properties-heterogeneous-materials-three
An algorithm based on finite elements applied to digital images is described for computing the linear elastic properties of heterogeneous materials.
linear elasticalgorithmcomputingeffectiveproperties
https://www.nist.gov/publications/finite-element-and-finite-difference-programs-computing-linear-electric-and-elastic
This manual has been prepared to show some of the theory behind, and the practical details for using, various finite element and finite difference computer prog
finite elementdifferenceprogramscomputinglinear