摘要
Plate-based cellular materials exhibit greater stiffness and strength than conventional cellular materials formed by struts.In this study,we designed and fabricated a plate-based auxetic cylinder metamaterial using high-resolution projection micro-stereolithography three-dimensional printing technique.Experiment and modeling results validated the auxetic behavior of the plate-based cylinder.The normalized Young’s modulus and yield strength of a four-layer auxetic cylinder are increased by 141%and 32%,respectively,compared with the conventional auxetic honeycomb.This study presents a universal strategy for fabricating plate-based auxetic metamaterials with appropriate mechanical performance for various structural applications.
基金
supported by the Shenzhen Science and Technology Innovation Commission(Grant Nos.SGDX2020110309300301 and JCYJ20170818103206501)
the City University of Hong Kong(Grant Nos.9667226 and 9610461)。
