Browsing by Subject "topology effects"
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Item Size and Topology Effects on Fracture Behavior of Cellular Structures(University of Texas at Austin, 2018) Wu, Yan; Yang, LiCellular structures can deform by either the bending, stretching or both of the cell walls or cell struts. In this study, the fracture characteristics of multiple typical cellular structures that represent both the bending-dominated and stretching-dominated structures were investigated. An analytical model based on the matrix displacement method was established for the analysis of the fracture progression of the cellular structures, which was consequently employed for the fracture analysis of the cellular structures under various geometry design conditions including cell topology, cell size and number of unit cells. From the results, it was shown that the fracture propagation patterns and stress characteristics of the two cellular designs (diamond and triangular) exhibit different dependencies on their geometry designs and cellular patterns. While the stretch-dominated triangular structure exhibit higher fracture strength compared to the bending-dominated diamond structure, it also exhibits more rapid fracture propagation and more significant size effect.