A wire-woven cellular metal: Part-II, Evaluation by experiments and numerical simulations

Wire-woven bulk Kagome (WBK) is a new truss-type cellular metal fabricated by systematic assembly of helical wires in six directions. In Part-I of this work, analytic solutions for equivalent material properties, such as yield stress and elastic modulus of WBK under compression and shear were derived. The load capacities of a WBK-cored sandwich panel under bending were predicted for various failure modes, and optimal designs of the WBK-cored sandwich panel were determined. In this work, the overall performance of a WBK-cored sandwich panel under shear and bending loads were evaluated in more detail by experiment and finite element (FE) simulation. Using comparisons with our experimental and numerical results, we show that the simple analytic solutions obtained in Part-I gave effective and accurate solutions. Hence, the model optimally designed on the basis of the analytic solutions gave the expected results. Furthermore, the WBK-cored sandwich panel showed excellent performance in terms of load capacity, energy absorption, and deformation stability after the maximum load point.