Collaborative Research: Computational Design of Programmable Lattice Material Systems

合作研究：可编程晶格材料系统的计算设计

• 批准号: 1634560
• 负责人: Hamid Nayeb-Hashemi
• 金额: $ 25.22万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1634560&HistoricalAwards=false
• 关键词: Collaborative; Research; Computational; Design; Programmable

Lattice materials can be engineered to exhibit desired bulk properties by controlling, through design and fabrication, the spatial arrangement of one or more base materials at smaller dimensional scales than the bulk material. Programmable materials are those that can change their spatial configuration in real-time, thereby offering the possibility of attaining not one but a number of desired behaviors. The proxy programmable material system considered in this research consists of a truss lattice with struts that can be opened and closed by means of electromagnetic joints. To attain multiple desired properties, it is necessary to determine both the lattice design, consisting of the size and position of the struts, and a program corresponding to each property consisting of the open/closed state of the joints. This effort, however, involves a large number of design parameters, hence it is not possible in general to design and program these materials by mere intuition, nor is it feasible to resort to computational, let alone experimental trial-and-error. This Design of Engineering Material Systems (DEMS) award supports fundamental research to formulate the first computational framework for the systematic design and programming of these lattice material systems. Results of this research have potentially far reaching applications, such as adaptable remote infrastructure operating in inhospitable environments, shelters that adapt their response to the direction of an incoming impact, building foundations that respond to the direction and frequency of an incoming seismic wave to avoid resonance, or aircraft wing structures that adapt to the flight regime to decrease drag and increase fuel efficiency. A concerted effort to recruit underrepresented undergraduate and graduate students for this project will increase their participation in the field of computational materials design. The multidisciplinary nature of this research will allow them to conduct research in a highly collaborative environment and ultimately widen their career opportunities.The foundation of the design framework is the projection of an analytical geometry representation of the lattice beams onto a fixed finite element grid for analysis and topology optimization. The intellectual contributions of this research lie in the ability to project the beams with electromagnetic joints to obtain an analysis model whose accuracy is adequate for the design, combine geometric requirements with strength, stability and connectivity constraints to ensure the lattice can be fabricated and does not lose its specified functions and simultaneously design the lattice and determine the programs necessary to attain multiple functions by solving a bi-level optimization problem.

可以通过设计和制造来控制一个或多个基本材料的空间排列，以比大量材料更小的尺寸尺度来控制晶格材料，以通过设计和制造来表现出所需的散装特性。可编程的材料是可以实时更改其空间配置的材料，从而提供了一种可能性，而是达到许多所需行为的可能性。 本研究中考虑的代理可编程材料系统包括一个带有支撑杆的桁架晶格，可以通过电磁接头打开和封闭。 为了获得多个所需的属性，有必要确定由支柱的大小和位置组成的晶格设计，以及与由关节的开放/封闭状态组成的每个属性相对应的程序。然而，这项工作涉及大量的设计参数，因此通常不可能通过直觉设计和编程这些材料，也不是可行的，更不用说进行计算，更不用说实验性试验了。 这种工程材料系统（DEMS）奖的设计支持基础研究，以制定这些晶格材料系统系统设计和编程的第一个计算框架。 这项研究的结果潜在地涉及应用程序，例如在不荒地的环境中运行的适应性远程基础设施，避开其避开反应，以适应传入影响的方向，建立响应响应的地震波的方向和频率，以避免共振，或者避免共振的飞机机翼结构，以适应飞行状态，以降低飞行状态，从而提高燃油效率。 为该项目招募代表性不足的本科生和研究生的一致努力将增加他们参与计算材料设计领域。 这项研究的多学科性质将使他们能够在高度协作的环境中进行研究，并最终扩大其职业机会。设计框架的基础是将晶格光束的分析几何形状表示在固定有限元网格上，以进行分析和拓扑优化。这项研究的智力贡献在于能够用电磁接头投射光束以获得一个分析模型，该模型足以使其精确地进行设计，将几何需求与强度，稳定性和连接性约束结合在一起，以确保可以制造晶格并确定其规定的功能并同时设计效果，以确定效果并确定该程序的功能。

项目成果

Slender origami with complex 3D folding shapes

具有复杂 3D 折叠形状的细长折纸

• DOI: 10.1209/0295-5075/124/58001
• 发表时间: 2018
• 期刊: EPL (Europhysics Letters
• 作者: Kamrava, S.;Ghosh, R.;Yang, Y.;Vaziri, A.
• 通讯作者: Vaziri, A.

Blast-resilience of honeycomb sandwich panels

• DOI: 10.1016/j.ijmecsci.2018.05.038
• 发表时间: 2018-08
• 期刊: International Journal of Mechanical Sciences
• 影响因子: 7.3
• 作者: H. Ebrahimi;Leila Keyvani Someh;Julián A. Norato;A. Vaziri

3D cellular metamaterials with planar anti-chiral topology

• DOI: 10.1016/j.matdes.2018.02.052
• 发表时间: 2018-05-05
• 期刊: MATERIALS & DESIGN
• 影响因子: 8.4
• 作者: Ebrahimi, Hamid;Mousanezhad, Davood;Vaziri, Ashkan
• 通讯作者: Vaziri, Ashkan

Color and Morphology Camouflaging using Biomimetic Scales

• DOI: 10.1002/aisy.201900021
• 发表时间: 2019-07-01
• 期刊: ADVANCED INTELLIGENT SYSTEMS
• 影响因子: 7.4
• 作者: Kamrava, Soroush;Tatari, Milad;Vaziri, Ashkan
• 通讯作者: Vaziri, Ashkan

Origami-Inspired Cellular Metamaterial With Anisotropic Multi-Stability

• DOI: 10.1002/adem.201800895
• 发表时间: 2019-02-01
• 期刊: ADVANCED ENGINEERING MATERIALS
• 影响因子: 3.6
• 作者: Kamrava, Soroush;Ghosh, Ranajay;Vaziri, Ashkan
• 通讯作者: Vaziri, Ashkan