Multi-scale models enriched with the second gradient of the displacement field and based
on the concept of representative volume element (RVE) are examined and discussed in …

In this paper, we propose a simple method for the modification of the unit cells in the lattice
metamaterials that provides an improvement of their impact strength. The idea is based on …

In this paper we model the size-effects of metamaterial beams under bending with the aid of
the relaxed micromorphic continuum. We analyze first the size-dependent bending stiffness …

Cellular auxetic materials, as a group of metamaterials, have received much interest due to
their promising mechanical properties in various applications. The main shortcomings of …

With the advancement of 3D printing technology, manufacturing metamaterials with extreme
mechanical properties is becoming more feasible. Hierarchical lattices appear to be ideal …

Ultralight structures with excellent specific mechanical properties have been of great interest
in the field of transportation. In this study, a new ultralight hybrid material composed of …

In this paper, we show that a two-field model for pantographic sheets generalized to include
a more refined description of the deformation of interconnecting pivots and structural …

In this paper optimal topologies of isotropic linear elastic strain gradient materials are
investigated by means of isogeometric topology optimization. The employment of strain …

In this paper, we aim to explore the mechanical potentialities of a material made of an
orthogonal net of fibers arranged in logarithmic spirals. Therefore, an annular plate …

We present and discuss the results of some numerical simulations dealing with wave motion
in one-dimensional pantographic media, also known as pantographic beams. Specifically …