可调泊松比圆弧星型结构的参数化设计  

Parametrization Design of Arc-star-shaped Structures with Tunable Poisson's Ratio

作　　者：刘海涛 王彦斌 张争艳[1,2] LIU Haitao;WANG Yanbin;ZHANG Zhengyan(School of Mechanical Engineering,Hebei University of Technology,Tianjin,300401;National Engineering Research Center for Technological Innovation Method and Tool,Hebei University of Technology,Tianjin,300401)

机构地区：[1]河北工业大学机械工程学院,天津300401 [2]河北工业大学国家技术创新方法与实施工具工程技术研究中心,天津300401

出　　处：《中国机械工程》2021年第18期2211-2216,共6页China Mechanical Engineering

基　　金：国家自然科学基金(61802108)。

摘　　要：在传统星型结构中加入圆弧杆,设计出一种可调泊松比圆弧星型结构,解决了结构受载时存在的应力集中问题,提高了结构的可制造性。运用能量方法推导出该结构在不同参数下的泊松比。通过有限元仿真及3D打印技术制备试件的实验验证了理论的正确性,讨论了各参数对结构泊松比的影响,可根据所需性能选取不同的几何参数来满足工程需要。A novel arc-star-shaped structure with tunable Poisson's ratio was proposed,which was composed of arc rods and traditional star structure.Stress concentration problems were solved,and the manufacturability of the structure was improved.Poisson's ratios of the structure with different parameters were obtained by energy method.Finite-element simulations and experiments of 3D printing specimens verified the correctness of theorical calculations.Effects of geometric parameters on the Poisson's ratios of the structure were discussed in detail.Different geometric parameters may be selected according to the required performance to meet the engineering needs.

关 键 词：力学超材料 负泊松比 圆弧星型结构 参数化设计 

分 类 号：O347[理学—固体力学]