This appears to be the source paper, but it's not nearly as interesting as I had hoped, and I'm at least already aware of how to project principle stress tensor

This appears to be the source paper, but it's not nearly as interesting as I had hoped, and I'm at least already aware of how to project principle stress tensor components. http://nonlinearstudies.com/index.php/mesa/article/view/1723 http://nonlinearstudies.com/index.php/mesa/article/view/1723 A unified bending/shear beam (spar) theory has been formulated by merging a number of previously completed theoretical segments into a comprehensive analytical treatment of linear non-homogenous viscoelastic Timoshenko beams (spars) with stochastic properties and random dynamic loads including shear center and neutral axis spatial and temporal motions due to bending, and including realistic physical starting load transients.