Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
Sci Rep. 2020 Aug 28;10(1):14247. doi: 10.1038/s41598-020-70536-7.
The complex cellular structure of trabecular bone possesses lightweight and superior energy absorption capabilities. By mimicking this novel high-performance structure, engineered cellular structures can be advanced into a new generation of protective systems. The goal of this research is to develop an analytical framework for predicting the critical buckling load, Young's modulus and energy absorption of a 3D printed bone-like cellular structure. This is achieved by conducting extensive analytical simulations of the bone-inspired unit cell in parallel to traverse every possible combination of its key design parameters. The analytical framework is validated using experimental data and used to evolve the most optimal cellular structure, with the maximum energy absorption as the key performance criterion. The design charts developed in this work can be used to guide the development of a futuristic engineered cellular structure with superior performance and protective capabilities against extreme loads.
具有复杂细胞结构的小梁骨具有重量轻和卓越的能量吸收能力。通过模拟这种新颖的高性能结构，工程化的多孔结构可以发展成为新一代的防护系统。本研究的目标是开发一种分析框架，用于预测 3D 打印仿生多孔结构的临界屈曲载荷、杨氏模量和能量吸收。这是通过对仿生单元进行广泛的分析模拟来实现的，同时遍历其关键设计参数的所有可能组合。使用实验数据验证了分析框架，并用于演化出具有最大能量吸收的最优多孔结构，将其作为关键性能标准。本工作中开发的设计图表可用于指导具有卓越性能和对极端载荷的防护能力的未来工程化多孔结构的发展。
