In the application of fuzzy reasoning, researchers usually choose the membership function optionally in some degree. Even though the membership functions may be different for the same concept, they can generally get the same or approximate results. The robustness of the membership function optionally chosen has brought many researchers’ attention. At present, many researchers pay attention to t...

Abstract This paper is majorly discussing the impact resistance of hierarchical lightweight lattice structure. Firstly, unit cells pyramidal structure and traditional single-stage hollow are designed. At same time, concept relative density introduced to better demonstrate In this paper, ABAQUS/Explicit software used simulate drop hammer simulation The result shows that than Meanwhile, samples p...