Equivalent material properties of a wire-woven cellular core

New analytic solutions are derived for the relative density, equivalent strength under compression and equivalent Young’s modulus of WBK (wire-woven bulk Kagome). The three dimensional curvature of struts and the considerable size of the brazed filler metal joining the struts are unique to a wire-woven structure and therefore, must be taken into account. The solutions are verified by comparison with the results of CAD models and finite element analysis as well as with experimental data. The effects of the slenderness ratio of struts, the size of the brazed joint, and the hardening exponent of the wire material are investigated. Sources of the discrepancy with the experimental results, limits in application, and engineering significance are discussed.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Analytic solutions are derived for the relative density, strength and modulus of WBK. ► The curvature of struts and the brazed filler metal are taken into account. ► The solutions are verified by finite element analysis and experiments. ► Increasing the brazed size is an easy way to increase the specific strength of WBK. ► Curved struts decrease stiffness of WBK, which is compensated by brazed filler metal.