Skip over navigation

 

An investigation on the deformation and failure behaviors of 2D cellular solids

Wei Tong (Southern Methodist University), Lin Wang (Southern Methodist University)

Symposium in honor of Rod Clifton on the occasion of his 75th Birthday

Mon 9:00 - 10:30

Salomon 101

Cellular or porous solids such as engineered foams, lattice materials and trabecular bones have a wide range of engineering and biomedical applications. In this presentation, a combined computational and experimental study on the deformation and failure behavior of a model 2D porous solid under tension will be described. Micro finite element models of the porous solid are created based on high resolution digital images. The predicted overall force-displacement responses and local deformation patterns from the micro finite element analysis are assessed in terms of sensitivities to the material micro-architecture and model construction details and by comparison with the full-field displacement measurements based on digital image correlation. Discussions will be given about the confidence limit in validating micro finite element models of cellular solids because of the measurement errors due to image noise and limited spatial resolution and the uncertainties in micro finite element model construction.