research

In this paper we study the stress and deformation fields generated by nonlinear inclusions with finite eigenstrains in anisotropic solids. In particular, we consider finite eigenstrains in transversely isotropic spherical balls and orthotropic cylindrical bars made of both compressible and incompressible solids. We show that the stress field in a spherical inclusion with uniform pure dilatational eigenstrain in a spherical ball made of an incompressible transversely isotropic solid such that the material preferred direction is radial at any point is uniform and hydrostatic.

The third Extreme Mechanics Letters (EML) Young Investigator Award is provided by Elsevier to honor the best paper by a young scientist which has been published in volumes 9-12 EML from 2016 to 2017.

Emerging materials and methods for fabricating 3D micro- and nanostructures provide powerful capabilities of relevance across diverse areas of technology. This Review highlights the latest results and future trends associated with the most powerful methods in 3D printing, folding and assembly. 

Read the article: Nature Reviews Materials 2, 17019 (2017) (Cover Feature Article)

Dielectric elastomers undergo phase transitions between thick and thin (wrinkled) states due to their electromechanical behaviour.

I hope some of you may find this work interesting, the X-FEM non-linear code developed (incorporating linear elasticity, J2 plasticity, and Strain Gradient Plasticity) can be downloaded from www.empaneda.com/codes

Gradient plasticity crack tip characterization by means of the extended finite element method

Emilio Martínez-Pañeda, Sundararajan Natarajan, Stéphane Bordas

Computational Mechanics (2017)

Y. Tang, G. Lin, S. Yang, Y.K. Yi, R. D. Kamien, J. Yin, “Programmable Kiri-Kirigami Metamaterials”, Adv. Mater. 29, 1604262 (2017)