Synclastic Behavior of the Auxetic Core for Furniture Panels

The cores of honeycomb panels are usually made of hexagonal cells. Due to their structure, they create anticlastic surfaces that are difficult to use in furniture design. Forming such cores and gluing sandwich panels forces the introduction of prestresses that overload the structure. Structures with negative Poisson's ratios are characterized by free, stress-less formation of curvilinear surfaces. A cell shape modification was proposed to obtain auxetic cell cores that ensure the creation of synclastic surfaces. New core structures for synclastic furniture sandwich honeycomb panels were modeled numerically and experimentally. It has been shown that new shapes of core cells created by transforming hexagonal cells enable the formation of synclastic surfaces.