Stiffness control analysis
An article entitled “Stiffness control analysis through numerical modelling of a smart sandwich panel with OSB facesheets and a tensegrity lattice core” by Jan Pełczyński, Kamila Martyniuk-Sienkiewicz and Anna Al Sabouni-Zawadzka has been published in the “European Journal of Wood and Wood Products“. The publication concerns an analysis of the possibility of controlling the bending stiffness of lightweight sandwich structures with a tensegrity core.
The paper presents the concept and results of numerical analyses of a new type of sandwich panel with OSB facesheets and a spatial tensegrity lattice core. In the first stage, the elastic moduli of the OSB boards were experimentally determined in two perpendicular directions, taking into account the variability of material properties reported in the literature. Subsequently, finite element analyses were performed in the ABAQUS environment, covering, among other things, the influence of the core configuration, the thickness of the cladding, the stiffness parameters of the core elements, and the properties of the core–cladding connection.
The results obtained demonstrated the key role of the method of joining the core to the facings in controlling the global stiffness of the panel, with a relatively minor influence of OSB board thickness and the diameter of the compression members. Based on the analyses carried out, a panel configuration was selected for further experimental investigations on a physical model.
The results presented are the result of work in the project entitled “Numerical and experimental development of an innovative wood-based layered structure with a tensegrity core” funded under the National Science Center grant number 2022/47/D/ST8/00466.
