Blog posts

I am investigating the effect of different structural properties on mechanical behavior of open-cell foams using compression tests. The structural properties that I have been considering are cell size, pore size, strut thickness as well as relative density. I am struggling on which surface area to consider for calculating the compression stress values, the "apparent" area which contains struts and pores (calculated by external dimensions of the specimens) or the "real" area which contains the struts only (and not pores).

https://plus.google.com/114459636678637969101/posts/5yGASSkvAmw

Matteo Pezzulla, Norbert Stoop, Xin Jiang, Douglas P. Holmes, Proceedings of the Royal Society A, 473(2201), (2017).

Check out my new article on a source of confusion in material and spatial versions of constitutive equations at http://www.parresianz.com/mechanics/incremental-objectivity/

-- Biswajit

A graduate position is opened in Advanced Hierarchical Materials by Design Lab at Louisiana Tech University on multiscale modeling of composites. The candidates must have earned a degree in Mechanical Engineering or related fields, and be a US Citizen. Candidates with a solid background in theoretical and computational mechanics, specifically continuum mechanics and finite element modeling are preferred. Familiarity with FEM software package COMSOL is a plus.

The highly non-equilibrium and complex (thermal, mechanical, fluidics) processes in additive manufacturing lead to different microstructure and defect mechanics that is a major barrier for adaptation of this attractive manufacturing technique.