Gerasimidis Group
Stability of Structures and Materials

Effect of defects on mechanical properties of architected metamaterials

 

This research work is performed through the collaboration with Prof. Bertoldi's research group (Katia Bertoldi and Andrew Gross) at Harvard University. We have investigated the response of four topologically distinct truss-lattice architectures to the inclusion of defects in order to elucidate how defects influence the elastic properties of these materials. Numerical results from finite element models of periodic beam networks with missing building blocks have been compared to both analytical continuum models with a micromechanical basis and to experiments with characteristic feature sizes on the nano and micro scales. Notably, this comparison reveals that the elastic properties of highly connected lattice-truss materials respond to defects in the same manner as homogeneous materials.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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